2004-08-20  Release Manager

	* PPL 0.6.1 Released.

2004-08-20 Friday 19:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (ppl-0_6-branch.2): Glitch fixed.

2004-08-20 Friday 19:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_6-branch.3): Updated.

2004-08-20 Friday 18:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.41),
	  devref-print.doxyconf-latex.in (1.41), devref.doxyconf-html.in
	  (1.41): Include certificates in the developer's reference.

2004-08-20 Friday 18:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/H79_Certificate.defs.hh (1.5): Spurious comments removed.

2004-08-20 Friday 18:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in,
	  devref-print.doxyconf-latex.in, devref.doxyconf-html.in
	  (ppl-0_6-branch.[3,3,4]): Include certificates in the developer's
	  reference.

2004-08-20 Friday 18:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/H79_Certificate.defs.hh (ppl-0_6-branch.2): Spurious comments
	  removed.

2004-08-20 Friday 17:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog, Watchdog/ChangeLog (ppl-0_6-branch.[2,2]): Updated.

2004-08-20 Friday 17:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox, doc/ppl.sty,
	  interfaces/Prolog/Prolog_interface.dox (ppl-0_6-branch.[1,1,1]):
	  Merge from the main trunk.

2004-08-20 Friday 17:36  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.157): Minor English improvement.

2004-08-20 Friday 17:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (ppl-0_6-branch.3): The
	  documentation of BHZ03_widening_assign made shorter by referring
	  to the new section in the introduction.  The comment on
	  concatenate_assign() made shorter (as suggested by Pat).

2004-08-20 Friday 17:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.156): Link error corrected.

2004-08-20 Friday 17:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.155): Added a paragraph on the BGP99
	  extrapolation operator.

2004-08-20 Friday 17:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.154): After doing the meet on elements of
	  the powerset domain elementwise, omega reduction is needed.

2004-08-20 Friday 16:56  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.153): Small improvements.

2004-08-20 Friday 16:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.33): The comment on
	  concatenate_assign() made shorter (as suggested by Pat).

2004-08-20 Friday 16:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.32): The documentation of
	  BHZ03_widening_assign made shorter by referring to the new
	  section in the introduction.

2004-08-20 Friday 16:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (ppl-0_6-branch.1): Ready for the release of PPL 0.6.1.

2004-08-20 Friday 16:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.152): A couple of corrections.

2004-08-20 Friday 16:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.151): Added a section on certificate-based
	  widenings.

2004-08-20 Friday 16:12  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedra_PowerSet.defs.hh (1.31): Corrected two comments.

2004-08-20 Friday 15:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/: ppl_lcdd/ppl_lcdd.cc, ppl_lpsol/ppl_lpsol.c
	  (ppl-0_6-branch.[1,1]): Do not try to use RLIMIT_AS unless the
	  configure script has determined its availability.

2004-08-20 Friday 15:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/: ppl_lcdd/ppl_lcdd.cc (1.23), ppl_lpsol/ppl_lpsol.c (1.2):
	  Do not try to use RLIMIT_AS unless the configure script has
	  determined its availability.

2004-08-20 Friday 15:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.150): Some improvements for the section on
	  polyhedra powersets.

2004-08-20 Friday 15:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.149): In the section about add_disjuct,
	  \cS_1 ==> \cS.

2004-08-20 Friday 15:17  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.112): Update cross
	  reference.

2004-08-20 Friday 15:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/: definitions.dox (1.148), ppl.sty (1.16): Added a short
	  (incomplete) section on the polyhedral powerset domain and
	  revised the description of the generic powerset meet operation.

2004-08-20 Friday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/NEWS (ppl-0_6-branch.1): Updated for the release of PPL
	  0.6.1.

2004-08-20 Friday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh,
	  src/Polyhedra_PowerSet.inlines.hh, tests/bgp99extrapolation2.cc,
	  tests/bhz03widening2.cc, tests/bhz03widening3.cc,
	  tests/bhz03widening5.cc, tests/bhz03widening6.cc
	  (ppl-0_6-branch.[2,1,1,1,1,1,1]): The methods
	  Polyhedra_PowerSet::semantically_contains(const
	  Polyhedra_PowerSet&) and
	  Polyhedra_PowerSet::semantically_equals(const
	  Polyhedra_PowerSet&) have been renamed
	  Polyhedra_PowerSet::geometrically_covers(const
	  Polyhedra_PowerSet&) and
	  Polyhedra_PowerSet::geometrically_equals(const
	  Polyhedra_PowerSet& y), respectively.

2004-08-20 Friday 15:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_6-branch.1): Completed for 0.6.1.

2004-08-20 Friday 15:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (ppl-0_6-branch.2): Formatting glitch fixed.

2004-08-20 Friday 14:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_6-branch.2): Version number bumped.

2004-08-20 Friday 14:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.100): Completed for 0.6.1.

2004-08-20 Friday 14:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (1.7): Formatting glitch fixed.

2004-08-20 Friday 14:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.147): Small improvements to section 1.6.

2004-08-20 Friday 14:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.146): Some polyhedra where wrongly named P
	  instead of \cP.  Replaced a couple of = signs by \defeq.  A first
	  pass on Section 1.5 (PowerSet) to correct minor typos.

2004-08-20 Friday 14:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.99), src/Polyhedra_PowerSet.defs.hh (1.30),
	  src/Polyhedra_PowerSet.inlines.hh (1.40),
	  tests/bgp99extrapolation2.cc (1.6), tests/bhz03widening2.cc
	  (1.7), tests/bhz03widening3.cc (1.5), tests/bhz03widening5.cc
	  (1.4), tests/bhz03widening6.cc (1.5): The methods
	  Polyhedra_PowerSet::semantically_contains(const
	  Polyhedra_PowerSet&) and
	  Polyhedra_PowerSet::semantically_equals(const
	  Polyhedra_PowerSet&) have been renamed
	  Polyhedra_PowerSet::geometrically_covers(const
	  Polyhedra_PowerSet&) and
	  Polyhedra_PowerSet::geometrically_equals(const
	  Polyhedra_PowerSet& y), respectively.

2004-08-20 Friday 14:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (ppl-0_6-branch.1): Documented
	  function pairwise_reduce().

2004-08-20 Friday 13:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.145): Some stuff (lazy/eager operators and
	  polymorphism disclaimer) moved into section 1.6 (Using the
	  Library).

2004-08-20 Friday 13:24  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.144): Bug fixed.

2004-08-20 Friday 13:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.29): Documented method
	  pairwise_reduce().

2004-08-20 Friday 13:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/: definitions.dox (1.143), ppl.sty (1.15): First draft of
	  description of the powerset construction added.

2004-08-20 Friday 11:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* README.configure (ppl-0_6-branch.1): Spurious indentation fixed.

2004-08-20 Friday 11:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BHRZ03_Certificate.defs.hh, H79_Certificate.defs.hh
	  (ppl-0_6-branch.[1,1]): In the Doxygen comments: lgo --> limited
	  growth ordering.

2004-08-20 Friday 11:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* README.configure (1.6): A spurious indentation fixed.

2004-08-20 Friday 11:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BHRZ03_Certificate.defs.hh (1.5), H79_Certificate.defs.hh
	  (1.4): In the Doxygen comment: lgo --> limited growth ordering

2004-08-19 Thursday 17:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* BUGS, CREDITS, ChangeLog, Makefile.am, NEWS, README,
	  README.configure, STANDARDS, TODO, config.guess, config.sub,
	  configure.ac, depcomp, install-sh, ltmain.sh, ppl.lsm.in,
	  ppl.spec.in, Watchdog/ChangeLog,
	  Watchdog/Doubly_Linked_Object.defs.hh,
	  Watchdog/Doubly_Linked_Object.inlines.hh,
	  Watchdog/Doubly_Linked_Object.types.hh, Watchdog/EList.defs.hh,
	  Watchdog/EList.inlines.hh, Watchdog/EList.types.hh,
	  Watchdog/EList_Iterator.defs.hh,
	  Watchdog/EList_Iterator.inlines.hh,
	  Watchdog/EList_Iterator.types.hh, Watchdog/Handler.defs.hh,
	  Watchdog/Handler.inlines.hh, Watchdog/Handler.types.hh,
	  Watchdog/Makefile.am, Watchdog/NEWS, Watchdog/Pending_Element.cc,
	  Watchdog/Pending_Element.defs.hh,
	  Watchdog/Pending_Element.inlines.hh,
	  Watchdog/Pending_Element.types.hh, Watchdog/Pending_List.cc,
	  Watchdog/Pending_List.defs.hh, Watchdog/Pending_List.inlines.hh,
	  Watchdog/Pending_List.types.hh, Watchdog/README,
	  Watchdog/Time.cc, Watchdog/Time.defs.hh,
	  Watchdog/Time.inlines.hh, Watchdog/Time.types.hh,
	  Watchdog/Watchdog.cc, Watchdog/Watchdog.defs.hh,
	  Watchdog/Watchdog.inlines.hh, Watchdog/config.guess,
	  Watchdog/config.sub, Watchdog/configure.ac, Watchdog/depcomp,
	  Watchdog/install-sh, Watchdog/ltmain.sh, demos/Makefile.am,
	  demos/ppl_lcdd/Makefile.am, demos/ppl_lcdd/ppl_lcdd.cc,
	  demos/ppl_lcdd/examples/.cvsignore,
	  demos/ppl_lcdd/examples/Makefile.am, demos/ppl_lpsol/.cvsignore,
	  demos/ppl_lpsol/Makefile.am, demos/ppl_lpsol/expected,
	  demos/ppl_lpsol/ppl_lpsol.c, demos/ppl_lpsol/examples/.cvsignore,
	  demos/ppl_lpsol/examples/Makefile.am,
	  demos/ppl_lpsol/examples/afiro.mps,
	  demos/ppl_lpsol/examples/bgprtr.mps,
	  demos/ppl_lpsol/examples/ex1.mps,
	  demos/ppl_lpsol/examples/sample.mps,
	  demos/ppl_lpsol/examples/unboundedmin.mps, doc/Makefile.am,
	  doc/definitions.dox, doc/devref-browse.doxyconf-latex.in,
	  doc/devref-print.doxyconf-latex.in, doc/devref.doxyconf-html.in,
	  doc/devref.tex, doc/fdl.txt, doc/gpl.txt, doc/ppl.sty,
	  doc/user-browse.doxyconf-latex.in,
	  doc/user-print.doxyconf-latex.in, doc/user.doxyconf-html.in,
	  doc/user.tex, interfaces/C/Makefile.am, interfaces/C/ppl_c.cc,
	  interfaces/C/ppl_c.h.in, interfaces/Prolog/Prolog_interface.dox,
	  interfaces/Prolog/pl_check.pl, interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/Ciao/Makefile.am,
	  interfaces/Prolog/Ciao/ciao_pl_check.pl,
	  interfaces/Prolog/Ciao/ppl_ciao.pl,
	  interfaces/Prolog/GNU/ppl_gprolog.pl,
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc,
	  interfaces/Prolog/SWI/.cvsignore,
	  interfaces/Prolog/SWI/ppl_swiprolog.cc,
	  interfaces/Prolog/XSB/ppl_xsb.H,
	  interfaces/Prolog/XSB/ppl_xsb.cc,
	  interfaces/Prolog/XSB/xsb_pl_check.P,
	  interfaces/Prolog/YAP/ppl_yap.cc, src/AskTell.defs.hh,
	  src/BHRZ03_Certificate.defs.hh,
	  src/BHRZ03_Certificate.inlines.hh, src/BoundingBox.inlines.hh,
	  src/C_Polyhedron.cc, src/C_Polyhedron.defs.hh,
	  src/C_Polyhedron.inlines.hh, src/ConSys.defs.hh,
	  src/ConSys.inlines.hh, src/Constraint.cc, src/Constraint.defs.hh,
	  src/Constraint.inlines.hh, src/Determinate.defs.hh,
	  src/Determinate.inlines.hh, src/GenSys.cc, src/GenSys.defs.hh,
	  src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/H79_Certificate.cc,
	  src/H79_Certificate.defs.hh, src/H79_Certificate.inlines.hh,
	  src/H79_Certificate.types.hh, src/Init.cc, src/Makefile.am,
	  src/Matrix.defs.hh, src/NNC_Polyhedron.defs.hh,
	  src/NNC_Polyhedron.inlines.hh, src/Ph_Status.idefs.hh,
	  src/Poly_Con_Relation.defs.hh, src/Poly_Gen_Relation.defs.hh,
	  src/Polyhedra_PowerSet.defs.hh,
	  src/Polyhedra_PowerSet.inlines.hh, src/Polyhedron.defs.hh,
	  src/Polyhedron.inlines.hh, src/Polyhedron.types.hh,
	  src/Polyhedron_chdims.cc, src/Polyhedron_nonpublic.cc,
	  src/Polyhedron_public.cc, src/Polyhedron_widenings.cc,
	  src/PowerSet.defs.hh, src/PowerSet.inlines.hh, src/Row.defs.hh,
	  src/SatMatrix.defs.hh, src/Widening_Function.defs.hh,
	  src/Widening_Function.inlines.hh, src/Widening_Function.types.hh,
	  src/algorithms.hh, src/conversion.cc, src/globals.cc,
	  src/globals.hh, src/minimize.cc, src/simplify.cc,
	  src/statistics.hh, src/version.hh.in, tests/.cvsignore,
	  tests/Makefile.am, tests/bgp99extrapolation1.cc,
	  tests/bgp99extrapolation2.cc, tests/bhz03widening1.cc,
	  tests/bhz03widening2.cc, tests/bhz03widening3.cc,
	  tests/bhz03widening4.cc, tests/bhz03widening5.cc,
	  tests/bhz03widening6.cc, tests/boundingbox1.cc,
	  tests/boundingbox2.cc, tests/boundingbox3.cc,
	  tests/boundingbox4.cc, tests/boundingbox5.cc,
	  tests/exceptions3.cc, tests/expanddim1.cc, tests/expanddim2.cc,
	  tests/folddims1.cc, tests/folddims2.cc, tests/h79widening6.cc,
	  tests/linearpartition1.cc, tests/linearpartition2.cc,
	  tests/linearpartition3.cc, tests/linearpartition4.cc,
	  tests/polydifference8.cc, tests/watchdog1.cc
	  (altnum.[1,2,1,2,1,1,1,1,1,1,1,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,2,1,1,2,2,1,1,2,2,2,2,2,1,1,1,1,1,7,1,1,1,1,1,1,1,1,2,2,1,1,2,2,2,1,1,2,1,1,1,1,1,2,2,2,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]):
	  First merge from main trunk.

2004-08-19 Thursday 17:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.207), linearpartition4.cc (1.1): New test
	  for linear_partition() (still to be completed).

2004-08-19 Thursday 17:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.119): Version number bumped.

2004-08-19 Thursday 17:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.18): Updated.

2004-08-19 Thursday 15:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.142): This is a start in revising the
	  introductory sections to the manual so as to allow for the
	  inclusion of domains other than that of convex polyhedra.

2004-08-19 Thursday 14:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in,
	  devref-print.doxyconf-latex.in, devref.doxyconf-html.in
	  (ppl-0_6-branch.[2,2,3]), devref-browse.doxyconf-latex.in (1.40),
	  devref-print.doxyconf-latex.in (1.40), devref.doxyconf-html.in
	  (1.40): AskTell should not appear in the develper's reference.

2004-08-19 Thursday 14:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Widening_Function.defs.hh (ppl-0_6-branch.1): Avoided a
	  warning in the devref documentation.

2004-08-19 Thursday 14:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Widening_Function.defs.hh (1.4): Avoided a warning in the
	  devref documentation.

2004-08-19 Thursday 13:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (ppl-0_6-branch.2), AskTell.defs.hh (1.24):
	  Previous change reverted.

2004-08-19 Thursday 12:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.39),
	  devref-print.doxyconf-latex.in (1.39), devref.doxyconf-html.in
	  (1.39): Widening_Function and Polyhedra_PowerSet should appear in
	  all the devref manuals.

2004-08-19 Thursday 12:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/AskTell.defs.hh (1.23): AskTell should not appear in the user
	  documentation until working.

2004-08-19 Thursday 12:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in,
	  devref-print.doxyconf-latex.in, devref.doxyconf-html.in
	  (ppl-0_6-branch.[1,1,2]): Widening_Function should appear in the
	  devref manuals.

2004-08-19 Thursday 12:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/devref.doxyconf-html.in (ppl-0_6-branch.1):
	  Polyhedra_PowerSet has to also appear in the developers manual.

2004-08-19 Thursday 12:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/AskTell.defs.hh (ppl-0_6-branch.1): AskTell construction
	  should not appear in the user manuals.

2004-08-18 Wednesday 23:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (ppl-0_6-branch.1), Makefile.am (1.76): AskTell
	  is unfinished and not working: it should not be distributed.

2004-08-18 Wednesday 22:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: configure.ac (ppl-0_6-branch.1), ChangeLog (1.8),
	  configure.ac (1.20): Version number bumped.

2004-08-18 Wednesday 18:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_6-branch.1): Update version.

2004-08-18 Wednesday 18:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog, ChangeLog (ppl-0_6-branch.[1,1]): Mark
	  ChangeLog.

2004-08-18 Wednesday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.21): Distribute more documentation.

2004-08-18 Wednesday 14:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.38),
	  devref-print.doxyconf-latex.in (1.38): The Polyhedra_PowerSet
	  documentation has to appear in the devref manual too.

2004-08-18 Wednesday 14:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Widening_Function.defs.hh (1.3), algorithms.hh (1.29):
	  Applied the Doxygen \relates command in a couple of places.

2004-08-18 Wednesday 14:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bgp99extrapolation1.cc (1.4), bgp99extrapolation2.cc
	  (1.5), bhz03widening1.cc (1.5), bhz03widening2.cc (1.6),
	  bhz03widening3.cc (1.4), bhz03widening6.cc (1.4): Modified to
	  comply with the new interface.

2004-08-18 Wednesday 14:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.28),
	  Polyhedra_PowerSet.inlines.hh (1.39): Added doxygen
	  documentation.  Removed some methods that are now subsumed by the
	  generic ones.

2004-08-18 Wednesday 13:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/README (1.3): Last change reverted.

2004-08-18 Wednesday 13:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.23): Ready for the release.

2004-08-18 Wednesday 13:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/README (1.2): Revised.

2004-08-18 Wednesday 11:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.29): Installation of the documentation now
	  works both for distribution archives and for CVS versions.

2004-08-18 Wednesday 11:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.38): Include
	  "Widening_Function.defs.hh" instead of
	  "Widening_Function.types.hh".

2004-08-18 Wednesday 10:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.84): Ready for the release.

2004-08-18 Wednesday 09:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bhz03widening4.cc (1.3), bhz03widening5.cc (1.3):
	  Exploiting helper functions widen_fun().

2004-08-18 Wednesday 09:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.37): Exploiting helper
	  function widen_fun().

2004-08-18 Wednesday 09:48  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: GenSys.cc (1.86), Polyhedron.types.hh (1.12),
	  Polyhedron_widenings.cc (1.22), conversion.cc (1.54), simplify.cc
	  (1.36): Comments improved.

2004-08-18 Wednesday 09:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.106), interfaces/C/ppl_c.h.in (1.32),
	  src/C_Polyhedron.defs.hh (1.23), src/C_Polyhedron.inlines.hh
	  (1.17), src/NNC_Polyhedron.defs.hh (1.26),
	  src/NNC_Polyhedron.inlines.hh (1.18), tests/Makefile.am (1.206),
	  tests/exceptions3.cc (1.2): Start dealing with requests to build
	  "over-sized" objects.

2004-08-18 Wednesday 09:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Widening_Function.defs.hh (1.2),
	  Widening_Function.inlines.hh (1.3): Added helper function
	  widen_fun() to simplify the creation of widening function
	  objects. Added brief documentation.

2004-08-18 Wednesday 09:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: linearpartition2.cc (1.14), linearpartition3.cc (1.14):
	  Fixed.

2004-08-18 Wednesday 09:16  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: AskTell.defs.hh (1.22), ConSys.defs.hh (1.84),
	  Determinate.defs.hh (1.42), GenSys.defs.hh (1.97),
	  Polyhedra_PowerSet.defs.hh (1.27), Polyhedron.defs.hh (1.241),
	  Polyhedron.inlines.hh (1.94): Comments improved.

2004-08-18 Wednesday 08:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/linearpartition1.cc (1.14): Fixed.

2004-08-17 Tuesday 23:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Widening_Function.inlines.hh (1.2):
	  Limited_Widening_Function::operator() fixed.

2004-08-17 Tuesday 23:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.28): Install documentation in text format.

2004-08-17 Tuesday 21:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bhz03widening4.cc (1.2), bhz03widening5.cc (1.2):
	  Corrected to work with the new implementation.

2004-08-17 Tuesday 21:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Makefile.am (1.75), Polyhedra_PowerSet.defs.hh (1.26),
	  Polyhedra_PowerSet.inlines.hh (1.36), Widening_Function.defs.hh
	  (1.1), Widening_Function.inlines.hh (1.1),
	  Widening_Function.types.hh (1.1): Factorized a lot of code
	  related to widenings of powersets by using function objects
	  instead of method pointers.

2004-08-17 Tuesday 21:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Determinate.defs.hh (1.41), Determinate.inlines.hh (1.39),
	  algorithms.hh (1.28): Improved a little bit the docuemntation for
	  the Determinate construction.  Removed a few seemingly useless
	  methods. The polyhedron() methods renamed as element().

2004-08-17 Tuesday 19:43  Abramo Bagnara

	* src/checked_mpq.inlines.hh (altnum.8): Fixed unhandled native
	  integer type behaviour.

2004-08-17 Tuesday 19:39  Abramo Bagnara

	* src/checked_mpz.inlines.hh (altnum.9): Fixed unhandled native
	  integer type behaviour.

2004-08-17 Tuesday 19:33  Abramo Bagnara

	* src/Makefile.am (altnum.6): Added Limits.hh

2004-08-17 Tuesday 19:33  Abramo Bagnara

	* src/checked_float.inlines.hh (altnum.6): Fixed float96_t format
	  oddities. Cleaned code.

2004-08-17 Tuesday 19:31  Abramo Bagnara

	* src/: Checked_Number.defs.hh, Checked_Number.inlines.hh,
	  Limits.hh, checked.defs.hh, checked_int.inlines.hh
	  (altnum.[4,5,1,7,6]): Fixed unhandled native integer type
	  behaviour.

2004-08-17 Tuesday 17:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/gpl.txt (1.2): Spacing fixed.

2004-08-17 Tuesday 17:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.25): Distribute also README.configure.

2004-08-17 Tuesday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.83): One less thing to do.

2004-08-17 Tuesday 14:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* BUGS (1.4), CREDITS (1.13): Formatted.

2004-08-17 Tuesday 14:12  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* README.configure (1.5): Corrected a typo and improved the
	  English.

2004-08-17 Tuesday 13:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* BUGS (1.3), CREDITS (1.12), STANDARDS (1.14): English
	  improvements made.

2004-08-17 Tuesday 12:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.40), Determinate.inlines.hh (1.38),
	  PowerSet.defs.hh (1.47), PowerSet.inlines.hh (1.57):
	  Determinate::operator+(), Determinate::operator*(),
	  PowerSet::operator+() and PowerSet::operator*() removed.

2004-08-17 Tuesday 12:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.11): Small English improvement.

2004-08-17 Tuesday 11:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/bhz03widening2.cc (1.5): Redundant code removed.

2004-08-17 Tuesday 11:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Determinate.defs.hh (1.39), Determinate.inlines.hh (1.37):
	  The methods grouped according to constness and space-dim
	  preservation, as done for the class Polyhedron.  Two inline
	  directives moved from *.defs.hh into *.inlines.hh.

2004-08-17 Tuesday 10:56  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.94): Tests for adding and
	  removing dimensions now include cases where no dimensions are
	  added or removed and also when all the dimensions are removed.

2004-08-17 Tuesday 10:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.141): The descriptions of the add and
	  remove dimensions operators improved.  The description of the
	  concatenate operation moved to just before the description of the
	  add dimensions operators.

2004-08-17 Tuesday 10:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.98), configure.ac (1.118), doc/Makefile.am (1.27): The
	  documentation for users, in PostScript, PDF and HTML formats, is
	  now installed in a standard place by `make install'.

2004-08-17 Tuesday 09:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Determinate.defs.hh (1.38): Small improvements.

2004-08-17 Tuesday 09:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.140): Added a section on constructions on
	  polyhedra.

2004-08-17 Tuesday 09:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.25): Started documenting the
	  widening operators.

2004-08-17 Tuesday 09:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BHRZ03_Certificate.defs.hh (1.4),
	  BHRZ03_Certificate.inlines.hh (1.2), H79_Certificate.cc (1.2),
	  H79_Certificate.defs.hh (1.3), H79_Certificate.inlines.hh (1.2):
	  H79_Certificate simplified by removing useless methods. The
	  documentation of BHRZ03_Certificate method is_stabilizing() now
	  only appears in the developers manual. Both classes now appear in
	  the user manual, as they provide documentation of the method
	  needed by any new certificate.

2004-08-17 Tuesday 09:39  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.111): Several minor
	  "English" corrections and some cross references improved or
	  added.

2004-08-17 Tuesday 09:37  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.139): An anchor has been added and minor
	  English improvement.

2004-08-17 Tuesday 08:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: bhz03widening3.cc (1.3), bhz03widening6.cc (1.3),
	  boundingbox2.cc (1.21), boundingbox4.cc (1.10): Comments revised
	  in boundinbox2.cc and boundingbox4.cc.  Known result in
	  bhz03widening3.cc added and checked.	New test added to
	  bhz03widening6.cc for the case when the multiset ordering wrt the
	  lgo is converging.

2004-08-17 Tuesday 00:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bgp99extrapolation2.cc (1.4): Be quiet.

2004-08-17 Tuesday 00:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/folddims2.cc (1.2): Removed test that was already made in
	  folddims1.cc.  Comment revised.

2004-08-17 Tuesday 00:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.205): Spurious backslash removed.

2004-08-17 Tuesday 00:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bgp99extrapolation2.cc (1.3): Completed (and made more
	  interesting).

2004-08-16 Monday 21:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: Makefile.am (1.204), folddims2.cc (1.1): Tests for NNC
	  polyhedra added.

2004-08-16 Monday 21:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/bgp99extrapolation2.cc (1.2): Comment corrected.

2004-08-16 Monday 20:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/h79widening6.cc (1.7): An example taken from CH78.

2004-08-16 Monday 19:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.203), bgp99extrapolation2.cc (1.1),
	  h79widening6.cc (1.6): Test program h79widening6.cc renamed
	  bgp99extrapolation2.cc.

2004-08-16 Monday 19:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.20): Added the `ppl_lcdd' program to the main
	  package.  Require gcc-c++ to be exactly version 3.4.1.

2004-08-16 Monday 19:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/Makefile.am (1.3): The `ppl_lcdd' program will be
	  installed in `bindir'.

2004-08-16 Monday 18:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.lsm.in (1.5), ppl.spec.in (1.19): Updated.

2004-08-16 Monday 18:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.138): Definition of the folding operation
	  improved.

2004-08-16 Monday 18:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.82): Some items postponed.  Main points of PPL 0.7
	  drafted.

2004-08-16 Monday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.22): Typo fixed.

2004-08-16 Monday 18:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/README (1.7): Updated.

2004-08-16 Monday 18:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BHRZ03_Certificate.defs.hh (1.3), H79_Certificate.defs.hh
	  (1.2): Fixed the documentation of the certificates (for now, this
	  will only appear in the developer manual).

2004-08-16 Monday 18:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.24),
	  Polyhedra_PowerSet.inlines.hh (1.35): Fixed header inclusions.

2004-08-16 Monday 18:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Determinate.defs.hh (1.37), src/Polyhedron.defs.hh (1.240),
	  doc/definitions.dox (1.137): Added a section about concatenation
	  of polyhedra to the introduction of the user manual. Now the
	  documentation of concatenate_assign() refers to it.

2004-08-16 Monday 18:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.54): Prolog_raise_exception()
	  implemented.

2004-08-16 Monday 17:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.10): Specify that Andrea is with the University of
	  Parma.  Email address omitted.

2004-08-16 Monday 17:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.21): Formatting changes.

2004-08-16 Monday 17:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.93): This test file now checks
	  correctly that the exceptions do work ok.

2004-08-16 Monday 17:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.20): Updated.

2004-08-16 Monday 16:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (1.4): Added instructions about the use of
	  Comeau C/C++ 4.3.3.

2004-08-16 Monday 16:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.97): Announce the new README.configure file.

2004-08-16 Monday 16:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.96): Drafted an announcement for the new Determinate,
	  PowerSet and Polyhedra_PowerSet classes.

2004-08-16 Monday 16:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.inlines.hh (1.33): Fixed
	  ConSys::max_space_dimension().

2004-08-16 Monday 14:15  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/bhz03widening6.cc (1.2): Comments added.

2004-08-16 Monday 14:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: Makefile.am (1.202), bhz03widening6.cc (1.1): dded more
	  tests.

2004-08-16 Monday 12:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.81): Some items postponed.  Main points of PPL 0.7
	  drafted.

2004-08-16 Monday 12:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.95): Announce the new "expand" and "fold" operations.

2004-08-16 Monday 12:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.201), bhz03widening4.cc (1.1),
	  bhz03widening5.cc (1.1): New tests are the same as
	  bhz03widening1.cc and bhz03widening2.cc, but use the
	  H79_Certificate instead of BHRZ03_Certificate.

2004-08-16 Monday 12:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: H79_Certificate.cc (1.1), H79_Certificate.defs.hh (1.1),
	  H79_Certificate.inlines.hh (1.1), H79_Certificate.types.hh (1.1),
	  Makefile.am (1.74), Polyhedra_PowerSet.defs.hh (1.23),
	  Polyhedra_PowerSet.inlines.hh (1.34), Polyhedron.defs.hh (1.239):
	  Added the H79 widening certificate.  The certificate-based
	  widening methods for the Polyhedra_Powerset domain made generic
	  by parameterizing the certificate used. The instance using the
	  BHRZ03_Certificate still have the old name (so as old code still
	  works).

2004-08-16 Monday 09:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.94), Watchdog/NEWS (1.4): Our tentative release date is
	  August 18, 2004.

2004-08-16 Monday 08:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.17), Watchdog/ChangeLog (1.7): Updated.

2004-08-16 Monday 08:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_chdims.cc (1.14): In
	  Polyhedron::fold_dimensions(const Variables_Set&, Variable)
	  correctly handle the case where the set is empty.

2004-08-15 Sunday 22:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.105), ppl_c.h.in (1.31): New C
	  interface functions ppl_Polyhedron_expand_dimension() and
	  ppl_Polyhedron_fold_dimensions().

2004-08-15 Sunday 20:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_chdims.cc (1.13): Polyhedron::fold_dimensions()
	  now checks its interface invariants.

2004-08-15 Sunday 19:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.238): Completed the documentation of
	  Polyhedron::fold_dimensions().

2004-08-15 Sunday 19:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.136): Set-cardinality notation explained.

2004-08-15 Sunday 17:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.22): Do not mix extern "C" pointers
	  and extern "C++" pointers: they are different types.

2004-08-15 Sunday 17:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.135): Drafted a formal definition of the
	  "fold_dimensions" operation.

2004-08-15 Sunday 17:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/ppl.sty (1.14): Added the definition of the set-cardinality
	  operator `\card'.

2004-08-15 Sunday 11:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.134), src/Polyhedron.defs.hh (1.237):
	  Added placeholder and reference to the (yet to be written)
	  section on folding dimensions.

2004-08-15 Sunday 11:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: boundingbox1.cc (1.36), boundingbox3.cc (1.12),
	  boundingbox4.cc (1.9): Comments corrected/revised.

2004-08-15 Sunday 10:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.110): Documentation for
	  the ppl_Polyhedron_expand_dimension/3 and
	  ppl_Polyhedron_fold_dimensions/3 predicates, added.

2004-08-15 Sunday 10:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.92): A bug has been fixed.  The
	  tests for the bounding box predicates improved.

2004-08-15 Sunday 10:11  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: boundingbox1.cc (1.35), boundingbox2.cc (1.20),
	  boundingbox3.cc (1.11), boundingbox4.cc (1.8): The tests for
	  shrink_bounding_box() and building polyhedra from boxes have been
	  revised.

2004-08-15 Sunday 09:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.21): Catch and handle the
	  exceptions that may be raised.

2004-08-15 Sunday 08:44  Abramo Bagnara

	* src/checked_mpz.inlines.hh (altnum.8): Added conversion from mpz
	  to int.

2004-08-15 Sunday 00:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.20): Missing include files added.
	  Reduced the scope of some variables in set_alarm_on_cpu_time().

2004-08-14 Saturday 23:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (1.3): Added instructions on how to use the
	  Intel C/C++ compiler.

2004-08-14 Saturday 23:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.117): Version number bumped.	Require Autoconf
	  2.59 or later.

2004-08-14 Saturday 23:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/boundingbox5.cc (1.2): Be quiet.

2004-08-14 Saturday 23:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Ph_Status.idefs.hh (1.6): Inclusion guard added.

2004-08-14 Saturday 21:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Checked_Integer.defs.hh (altnum.5): Friend declarations
	  fixed.

2004-08-14 Saturday 10:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Checked_Integer.inlines.hh (altnum.6): Horrible kludge to fix
	  a bug in Checked_Integer<T>::Checked_Integer(U), where U is some
	  native integral type.

2004-08-14 Saturday 10:11  Abramo Bagnara

	* src/checked_mpz.inlines.hh (altnum.7): Fixed unsigned/signed
	  typo.

2004-08-14 Saturday 10:10  Abramo Bagnara

	* src/: Checked_Integer.inlines.hh, Checked_Number.inlines.hh,
	  checked.defs.hh, checked_float.inlines.hh, checked_mpq.inlines.hh
	  (altnum.[5,4,6,5,7]): Fixed code formatting.

2004-08-14 Saturday 08:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (altnum.5): Include the contents of
	  Integer.inlines.hh in ppl_install.hh.

2004-08-14 Saturday 00:04  Abramo Bagnara

	* src/: checked_mpq.inlines.hh, checked_mpz.inlines.hh
	  (altnum.[6,6]): Fixed signed/unsigned conversion.

2004-08-13 Friday 19:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bhz03widening3.cc (1.2): Be quiet.

2004-08-13 Friday 19:21  Abramo Bagnara

	* src/: checked.defs.hh, checked_mpq.inlines.hh,
	  checked_mpz.inlines.hh (altnum.[5,5,5]): Always pass 'from'
	  arguments by reference in inline helper functions

2004-08-13 Friday 18:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: checked_mpq.inlines.hh, checked_mpz.inlines.hh
	  (altnum.[4,4]): Qualified name is not allowed in namespace member
	  declaration.

2004-08-13 Friday 18:05  Abramo Bagnara

	* configure.ac (altnum.4): Added AM_CONDITIONAL for new checked
	  code.

2004-08-13 Friday 18:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Makefile.am (1.10), src/Makefile.am (1.73): Version info
	  updated for the libtool libraries.

2004-08-13 Friday 17:29  Abramo Bagnara

	* src/checked.defs.hh (altnum.4): More explicit name for function
	  container

2004-08-13 Friday 17:20  Abramo Bagnara

	* src/float.types.hh (altnum.2): Renamed float basic type.

2004-08-13 Friday 17:19  Abramo Bagnara

	* src/: checked.defs.hh, checked.inlines.hh,
	  checked_int.inlines.hh, checked_mpq.inlines.hh,
	  checked_mpz.inlines.hh (altnum.[3,3,5,3,3]): Added many const.
	  Renamed float basic type.

2004-08-13 Friday 17:19  Abramo Bagnara

	* src/checked_float.inlines.hh (altnum.4): Added pred/succ.

2004-08-13 Friday 17:17  Abramo Bagnara

	* src/Makefile.am (altnum.4): Adjusted for use of new checked code.

2004-08-13 Friday 17:17  Abramo Bagnara

	* src/: Checked_Number.defs.hh, Checked_Number.inlines.hh,
	  Checked_Number.types.hh (altnum.[3,3,2]): Added policy to
	  Checked_Numbers. Added operator from basic types.

2004-08-13 Friday 17:07  Abramo Bagnara

	* src/Checked_Number.cc (altnum.2): Removed empty file.

2004-08-13 Friday 17:06  Abramo Bagnara

	* src/: Checked_Integer.defs.hh, Checked_Integer.inlines.hh,
	  GMP_Integer.defs.hh, GMP_Integer.inlines.hh, Integer.defs.hh,
	  Integer.inlines.hh, Integer.types.hh, Native_Integer.defs.hh,
	  Native_Integer.inlines.hh (altnum.[4,4,3,3,4,1,4,4,4]): Shared
	  definitions and declarations Integer_{zero,one}.

2004-08-13 Friday 16:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.9), doc/devref.tex (1.14), doc/user.tex (1.15):
	  Authors lists adapted to reality.

2004-08-13 Friday 16:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.116): Version number bumped.

2004-08-13 Friday 16:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.13): Slightly modified the policy for the list of
	  parameters: for increased flexibility, detailed comments may
	  occur both before and after the list.

2004-08-13 Friday 16:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: AskTell.defs.hh (1.21), C_Polyhedron.defs.hh (1.22),
	  ConSys.defs.hh (1.83), Determinate.defs.hh (1.36), GenSys.defs.hh
	  (1.96), Generator.defs.hh (1.87), Matrix.defs.hh (1.58),
	  NNC_Polyhedron.defs.hh (1.25), Polyhedra_PowerSet.defs.hh (1.22),
	  Polyhedron.defs.hh (1.236), Row.defs.hh (1.79), SatMatrix.defs.hh
	  (1.34), conversion.cc (1.53), globals.hh (1.37), minimize.cc
	  (1.36), simplify.cc (1.35): All parameter lists formatted
	  according to the new policy in STANDARDS.

2004-08-13 Friday 16:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/.cvsignore (1.6), tests/.cvsignore (1.9):
	  Updated.

2004-08-13 Friday 15:09  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.91): Tests for
	  ppl_new_Polyhedron_from_bounding_box/3 that use the empty box as
	  input have been added.  Unwanted code removed.

2004-08-13 Friday 14:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.93), interfaces/Prolog/ppl_prolog.icc (1.134): Fixed a
	  bug in the Prolog interface predicate
	  ppl_new_Polyhedron_from_bounding_box/3 whereby the predicate was
	  failing when given an empty bounding box.

2004-08-13 Friday 14:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.90): Improved documentation and
	  tests.

2004-08-13 Friday 12:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.235), Polyhedron_nonpublic.cc (1.20):
	  Some parameters renamed so as to be more consistent with the rest
	  of the code.

2004-08-13 Friday 12:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* TODO (1.80): Updated.

2004-08-13 Friday 12:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/version.hh.in (1.9): Split the brief and detailed parts of a
	  couple of doxygen comments.

2004-08-13 Friday 12:03  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.30): Split a few brief comments where
	  seemingly appropriate.  Started applying the new formatting
	  policy for doxygen lists of parameters.

2004-08-13 Friday 12:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.12): Drafted a policy for the formatting of
	  parameter lists in doxygen comments.

2004-08-13 Friday 12:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Makefile.am (1.72): ppl.hh and ppl_install.hh also depend on
	  version.hh.

2004-08-13 Friday 11:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.92): Fixed a bug in the Prolog interface predicate
	  ppl_Polyhedron_get_bounding_box/3 whereby a wrong result was
	  sometimes computed in the case of an empty polyhedron.

2004-08-13 Friday 11:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/BoundingBox.inlines.hh (1.12): BoundingBox::set_empty() now
	  empties all the intervals.

2004-08-13 Friday 11:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: boundingbox1.cc (1.34), boundingbox2.cc (1.19),
	  boundingbox3.cc (1.10), boundingbox4.cc (1.7): Comments fixed.

2004-08-13 Friday 11:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.200), boundingbox5.cc (1.1): New test for
	  Polyhedron::shrink_bounding_box().

2004-08-13 Friday 10:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.89): Improved comments and
	  better sequence of tests for the widening and extrapolation
	  operators.

2004-08-13 Friday 08:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.37),
	  devref-print.doxyconf-latex.in (1.37), devref.doxyconf-html.in
	  (1.38), user-browse.doxyconf-latex.in (1.20),
	  user-print.doxyconf-latex.in (1.20), user.doxyconf-html.in
	  (1.22): Use the `:=' operator to PREDEFINE __P: this prevents the
	  definition to be undefined by `#undef'.

2004-08-13 Friday 08:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.88): Added simpler test defined
	  by predicate boundingbox_test/0 to show bug in
	  ppl_Polyhedron_get_bounding_box/3 predicate when the polyhedron
	  is empty. Test can be run using check_noisy/0.

2004-08-13 Friday 00:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.19), doc/devref-browse.doxyconf-latex.in (1.36),
	  doc/devref-print.doxyconf-latex.in (1.36),
	  doc/devref.doxyconf-html.in (1.37): The file statistics.hh has
	  been removed.

2004-08-13 Friday 00:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* TODO (1.79): Harmonization of methods Polyhedron::throw_*() dealt
	  with.

2004-08-13 Friday 00:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.cc (1.9), Constraint.cc (1.41),
	  Constraint.defs.hh (1.87), Constraint.inlines.hh (1.49),
	  Generator.cc (1.49), Generator.defs.hh (1.86),
	  Generator.inlines.hh (1.43), Matrix.defs.hh (1.57),
	  Ph_Status.idefs.hh (1.5), Poly_Con_Relation.defs.hh (1.24),
	  Poly_Gen_Relation.defs.hh (1.22), Polyhedron.defs.hh (1.234),
	  Polyhedron.inlines.hh (1.93), Polyhedron_chdims.cc (1.12),
	  Polyhedron_nonpublic.cc (1.19), Polyhedron_public.cc (1.25),
	  Polyhedron_widenings.cc (1.21), Row.defs.hh (1.78): The various
	  methods throw_incompatible_*() made more consistent with each
	  other, as well as the way they are called.  When closing a
	  doxygen comment group with @}, made clear the group closed.

2004-08-12 Thursday 18:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.91): Mention that a bug has been fixed in
	  Polyhedron::poly_difference_assign(const Polyhedron&).

2004-08-12 Thursday 18:12  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.87), ppl_prolog.icc (1.133),
	  Ciao/ciao_pl_check.pl (1.4), Ciao/ppl_ciao.pl (1.66),
	  GNU/ppl_gprolog.pl (1.45), SICStus/ppl_sicstus_sd.cc (1.62),
	  SWI/ppl_swiprolog.cc (1.87), XSB/ppl_xsb.H (1.32), XSB/ppl_xsb.cc
	  (1.53), XSB/xsb_pl_check.P (1.9), YAP/ppl_yap.cc (1.80): Added
	  interface predicate for fold_dimensions().  Added test for this
	  predicate.

2004-08-12 Thursday 17:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.86): Bugs introduced by adding
	  full stops corrected.

2004-08-12 Thursday 17:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron_public.cc (1.24): The patch for poly-difference
	  operator seems to be the right solution: CHECKME removed.

2004-08-12 Thursday 17:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.133), src/Polyhedron.defs.hh (1.233):
	  Pedantic correction to the explanation of poly-difference.

2004-08-12 Thursday 17:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.29): Simplified comments about
	  poly-hull operators.	For the poly-difference, added reference to
	  appropriate section of the manual.

2004-08-12 Thursday 16:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (1.2), TODO (1.78): Explained the basics about
	  configuring GMP and the PPL, as far as selecting the right
	  version of GPM is concerned.

2004-08-12 Thursday 15:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* TODO (1.77), doc/definitions.dox (1.132): Added a paragraph
	  explaining that PPL types should not be used polymorphically.
	  This is at the beginning of section 7 (The library), since it is
	  specific of the C++ language.

2004-08-12 Thursday 15:14  Abramo Bagnara

	* src/Integer.defs.hh (altnum.3): Fixed typos including new files.

2004-08-12 Thursday 14:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac, src/Integer.defs.hh, src/Integer.types.hh
	  (altnum.[3,2,3]): First go at a setup that allows to test the new
	  checked code against the old one.  The configure option
	  `--enable-new-checked-code' does what is expected.

2004-08-12 Thursday 12:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.76), doc/definitions.dox (1.131): Small improvement to
	  the discussion about the use of iterators and references.

2004-08-12 Thursday 11:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.28): Corrected two doxygen comments:
	  "const iterator system" --> "const iterator".

2004-08-12 Thursday 11:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.130): Drafted a section providing a
	  warning about the possible invalidation of references and
	  iterators.

2004-08-12 Thursday 11:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac, src/Integer.types.hh, src/Makefile.am
	  (altnum.[2,2,3]): Do not use C types like char, short, long and
	  long long.  Use the fixed width types int8_t, int16_t, int32_t
	  and int64_t instead.

2004-08-12 Thursday 10:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/folddims1.cc (1.2): A number of different tests for
	  fold_dimensions() added.

2004-08-12 Thursday 10:20  Abramo Bagnara

	* src/checked_int.inlines.hh (altnum.4): Added preliminary
	  optimizations.

2004-08-12 Thursday 10:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/checked_float.inlines.hh (altnum.3): Parenthesis moved
	  outside #if/#endif block.

2004-08-12 Thursday 09:49  Abramo Bagnara

	* src/checked.inlines.hh (altnum.2): Missing file from previous
	  commit (policy addition).

2004-08-12 Thursday 09:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_public.cc (1.23): Added a comment to the
	  implementation of Polyhedron::poly_difference_assign().

2004-08-12 Thursday 09:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (1.85): Given a proper reference to
	  the work of Gopan et al.  Comments terminated by a full-stop.

2004-08-12 Thursday 09:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.132): Indentation fixed.

2004-08-12 Thursday 09:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.199), expanddim1.cc (1.7), expanddim2.cc
	  (1.1): Tests that are specific to NNC polyhedra must go in
	  separate files: expanddim2.cc cut out from expanddim1.cc.

2004-08-12 Thursday 08:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/expanddim1.cc (1.6): Biobliographic reference fixed.

2004-08-12 Thursday 08:51  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.84): Added another (simple) test
	  for the poly difference predicate; Added a test for the
	  expand_dimension predicate based on that in the TACAS04 paper on
	  page 519.

2004-08-12 Thursday 08:48  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/expanddim1.cc (1.5): Added test corresponding to example in
	  the TACAS04 paper on page 519.

2004-08-12 Thursday 08:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/expanddim1.cc (1.4): We always terminate sentences with a
	  full stop.

2004-08-11 Wednesday 23:49  Abramo Bagnara

	* src/checked_int.inlines.hh (altnum.3): Changed approach to
	  checked add/sub to avoid undefined behaviour caused by out of
	  range expressions.

2004-08-11 Wednesday 22:10  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.83): Test for
	  ppl_Polyhedron_poly_difference_assign corrected.

2004-08-11 Wednesday 21:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.82), ppl_prolog.icc (1.131),
	  Ciao/ciao_pl_check.pl (1.3), Ciao/ppl_ciao.pl (1.65),
	  GNU/ppl_gprolog.pl (1.44), SICStus/ppl_sicstus_sd.cc (1.61),
	  SWI/ppl_swiprolog.cc (1.86), XSB/ppl_xsb.H (1.31), XSB/ppl_xsb.cc
	  (1.52), XSB/xsb_pl_check.P (1.8), YAP/ppl_yap.cc (1.79): Prolog
	  interface predicate added for expand_dimension().  Test for new
	  predicate added to pl_check.pl.

2004-08-11 Wednesday 21:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/expanddim1.cc (1.3): More tests added for testing
	  expand_dimensions().

2004-08-11 Wednesday 19:25  Abramo Bagnara

	* src/: Checked_Number.defs.hh, Checked_Number.inlines.hh,
	  Result_Info.defs.hh, checked.defs.hh, checked_float.cc,
	  checked_float.defs.hh, checked_float.inlines.hh, checked_int.cc,
	  checked_int.defs.hh, checked_int.inlines.hh, checked_mpq.cc,
	  checked_mpq.defs.hh, checked_mpq.inlines.hh, checked_mpz.cc,
	  checked_mpz.defs.hh, checked_mpz.inlines.hh
	  (altnum.[2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2]): Added policy to
	  checked functions. Deleted useless files. Confined checked
	  functions and helper class to Checked namespace.

2004-08-11 Wednesday 18:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron_public.cc (1.22): Drafted a patch to correct bug
	  shown by polydifference8.cc.

2004-08-11 Wednesday 18:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.198), bhz03widening3.cc (1.1),
	  polydifference8.cc (1.1): New test polydifference8.cc (extracted
	  from bhz03wodening3.cc) shows a bug in method
	  Polyhedron::poly_difference_assign().

2004-08-11 Wednesday 16:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.197), folddims1.cc (1.1): Use folddims1.cc
	  for testing Polyhedron::fold_dimensions().

2004-08-11 Wednesday 16:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.21),
	  Polyhedra_PowerSet.inlines.hh (1.33): Use BHRZ03_Certificate
	  instead of BHRZ03_info. First step towards generalizing the BHZ03
	  widening to arbitrary certificates.

2004-08-11 Wednesday 16:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.232), Polyhedron.inlines.hh (1.92),
	  Polyhedron_widenings.cc (1.20): Got rid of all the stuff related
	  to Polyhedron::BHRZ03_info, superseded by the class
	  BHRZ03_Certificate.

2004-08-11 Wednesday 16:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/BHRZ03_Certificate.defs.hh (1.2): The comparison function is
	  now provided with a brief and a detailed doxygen descriptions.

2004-08-11 Wednesday 15:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/expanddim1.cc (1.2): Two new tests sketched.

2004-08-11 Wednesday 15:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_chdims.cc (1.11): Fixed a bug in
	  Polyhedron::expand_dimension().  Polyhedron::fold_dimensions()
	  drafted.

2004-08-11 Wednesday 12:03  Abramo Bagnara

	* src/: Checked_Number.cc, Checked_Number.defs.hh,
	  Checked_Number.inlines.hh, Checked_Number.types.hh
	  (altnum.[1,1,1,1]): Replacement for Checked_Integer and more

2004-08-11 Wednesday 12:03  Abramo Bagnara

	* src/float.types.hh (altnum.1): Native float type declaration

2004-08-11 Wednesday 12:02  Abramo Bagnara

	* src/Result_Info.defs.hh (altnum.1): Result info for checked
	  functions

2004-08-11 Wednesday 12:02  Abramo Bagnara

	* src/: checked.defs.hh, checked.inlines.hh, checked_float.cc,
	  checked_float.defs.hh, checked_float.inlines.hh, checked_int.cc,
	  checked_int.defs.hh, checked_int.inlines.hh, checked_mpq.cc,
	  checked_mpq.defs.hh, checked_mpq.inlines.hh, checked_mpz.cc,
	  checked_mpz.defs.hh, checked_mpz.inlines.hh
	  (altnum.[1,1,1,1,1,1,1,1,1,1,1,1,1,1]): Checked functions for
	  int, float, mpz and mpq

2004-08-11 Wednesday 10:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_chdims.cc (1.10), tests/Makefile.am (1.196),
	  tests/expanddim1.cc (1.1): Added a prototype implementation of
	  Polyhedron::expand_dimension(Variable var, dimension_type m).

2004-08-09 Monday 23:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.18): Started revision for the PPL 0.6 release.

2004-08-09 Monday 22:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.75): Section on portability migrated to README.configure.
	  Section on constructions on polyhedra revised.

2004-08-09 Monday 22:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* README.configure (1.1): New file describing the PPL-specific
	  aspects of configuration, compilation and installation of the
	  library.

2004-08-09 Monday 20:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: Makefile.am (1.26), fdl.txt (1.1), gpl.txt (1.1): We now
	  distribute the GPL and the FDL also in text format (so as not to
	  assume that users have Doxygen and/or LaTeX and/or a
	  PostScript/PDF viewer).

2004-08-09 Monday 11:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Init.cc (1.11), Makefile.am (1.71), Polyhedron_widenings.cc
	  (1.19), statistics.hh (1.4): Dealt with all the stuff needed to
	  collect statistics about the BHRZ03 widening operator.

2004-08-09 Monday 10:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.74), src/Polyhedron.defs.hh (1.231),
	  src/Polyhedron.inlines.hh (1.91): In
	  Polyhedron::map_dimensions(const PartialFunction&), the method
	  PartialFunction::maps() is now called at most `n' times, where
	  `n' is the dimension of the vector space enclosing the
	  polyhedron.

2004-08-09 Monday 08:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.90), TODO (1.73), interfaces/Prolog/ppl_prolog.icc
	  (1.130), src/Polyhedra_PowerSet.inlines.hh (1.32),
	  src/PowerSet.inlines.hh (1.56), src/conversion.cc (1.52),
	  src/globals.cc (1.14), src/globals.hh (1.36), tests/watchdog1.cc
	  (1.20): The variable `abandon_exponential_computations' has been
	  renamed `abandon_expensive_computations'.  Its documentation has
	  also been revised.

2004-08-08 Sunday 21:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_widenings.cc (1.18): Two FIXMEs dealt with.

2004-08-08 Sunday 19:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.89), demos/ppl_lcdd/ppl_lcdd.cc (1.19), src/version.hh.in
	  (1.8): New macro PPL_VERSION expands to the version string of the
	  library.

2004-08-08 Sunday 19:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.88), Watchdog/Makefile.am (1.9), Watchdog/Watchdog.cc
	  (1.17), Watchdog/Watchdog.defs.hh (1.13),
	  Watchdog/Watchdog.inlines.hh (1.11),
	  interfaces/Prolog/ppl_prolog.icc (1.129), tests/watchdog1.cc
	  (1.19): Watchdog library completely reorganized.  Deadlock bug
	  fixed in the process.

2004-08-08 Sunday 19:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/examples/Makefile.am (1.2): Distribute the
	  examples.

2004-08-08 Sunday 19:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.types.hh (1.11): Namespace closing brace
	  commented.

2004-08-08 Sunday 19:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Handler.defs.hh (1.1), Handler.inlines.hh (1.1),
	  Handler.types.hh (1.1): Classes for handlers of the watchdog
	  events.

2004-08-08 Sunday 18:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.129): Corrected a typo.

2004-08-08 Sunday 12:30  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.defs.hh (1.230): Documentation on map_dimensions
	  wrt the specification of pfunc revised.

2004-08-08 Sunday 10:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.defs.hh (1.229): Added to documentation of
	  map_dimensions, in the specification of the partial function
	  pfunc/2, an indication of the number of times the different
	  methods will be called.

2004-08-07 Saturday 19:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.19), Watchdog/ltmain.sh (1.8): Updated from Libtool
	  1.5.8.

2004-08-07 Saturday 08:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Pending_List.cc (1.1), Pending_List.defs.hh (1.1),
	  Pending_List.inlines.hh (1.1), Pending_List.types.hh (1.1): An
	  ordered list for recording pending watchdog events.

2004-08-07 Saturday 08:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: EList.defs.hh (1.3), EList.inlines.hh (1.2): The
	  clear() method has been removed.  The destructor now destructs
	  also the elements in the list.

2004-08-06 Friday 19:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Pending_Element.cc (1.1), Pending_Element.defs.hh
	  (1.1), Pending_Element.inlines.hh (1.1), Pending_Element.types.hh
	  (1.1): A class for pending watchdog events with embedded links.

2004-08-06 Friday 18:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Doubly_Linked_Object.defs.hh (1.1),
	  Doubly_Linked_Object.inlines.hh (1.1),
	  Doubly_Linked_Object.types.hh (1.1): A (base) class for doubly
	  linked objects.

2004-08-06 Friday 18:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: EList_Iterator.defs.hh (1.1),
	  EList_Iterator.inlines.hh (1.1), EList_Iterator.types.hh (1.1): A
	  class providing iterators for embedded lists.

2004-08-06 Friday 18:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/EList.defs.hh (1.2): Class comment revised.

2004-08-06 Friday 18:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: EList.defs.hh (1.1), EList.inlines.hh (1.1),
	  EList.types.hh (1.1): A list of doubly linked objects (where the
	  links are embedded in the objects themselves).

2004-08-06 Friday 18:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Time.cc (1.1), Time.defs.hh (1.1), Time.inlines.hh
	  (1.1), Time.types.hh (1.1): A class for representing and
	  manipulating positive time intervals.

2004-08-05 Thursday 08:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* TODO (1.72): ppl_Polyhedron_maximize,
	  ppl_Polyhedron_maximize_with_point, and ppl_Polyhedron_minimize,
	  ppl_Polyhedron_minimize_with_point have been added to the Prolog
	  interface with corresponding additions to the documentation and
	  pl_check.pl.	Todo item on this removed.

2004-08-05 Thursday 07:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Checked_Integer.defs.hh, Checked_Integer.inlines.hh,
	  Checked_Integer.types.hh, GMP_Integer.defs.hh,
	  GMP_Integer.inlines.hh, GMP_Integer.types.hh,
	  Integer_traits_template.hh, Native_Integer.defs.hh,
	  Native_Integer.inlines.hh, Native_Integer.types.hh
	  (altnum.[3,3,2,2,2,2,2,3,3,2]): Copyright years updated.

2004-08-04 Wednesday 22:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* depcomp (1.8), install-sh (1.9), Watchdog/depcomp (1.6),
	  Watchdog/install-sh (1.6): Updated from Automake 1.9.

2004-08-04 Wednesday 22:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.87), configure.ac (1.115), demos/Makefile.am (1.3),
	  demos/ppl_lcdd/Makefile.am (1.2),
	  demos/ppl_lcdd/examples/.cvsignore (1.1),
	  demos/ppl_lcdd/examples/Makefile.am (1.1),
	  demos/ppl_lpsol/.cvsignore (1.1), demos/ppl_lpsol/Makefile.am
	  (1.1), demos/ppl_lpsol/expected (1.1),
	  demos/ppl_lpsol/ppl_lpsol.c (1.1),
	  demos/ppl_lpsol/examples/.cvsignore (1.1),
	  demos/ppl_lpsol/examples/Makefile.am (1.1),
	  demos/ppl_lpsol/examples/afiro.mps (1.1),
	  demos/ppl_lpsol/examples/bgprtr.mps (1.1),
	  demos/ppl_lpsol/examples/ex1.mps (1.1),
	  demos/ppl_lpsol/examples/sample.mps (1.1),
	  demos/ppl_lpsol/examples/unboundedmin.mps (1.1),
	  interfaces/C/Makefile.am (1.17): All demos are now under the
	  `demos' directory.

2004-08-04 Wednesday 21:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.28): The source
	  `fake_mail.pl' has gone long time ago.

2004-08-04 Wednesday 20:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.23), config.sub (1.22), Watchdog/config.guess
	  (1.7), Watchdog/config.sub (1.7): Updated.

2004-08-04 Wednesday 20:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.71): The Polyhedron::*recycled*() methods do not make
	  sense for the Prolog interface.

2004-08-04 Wednesday 16:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: adddimensions11.cc, dualhypercubes.cc (altnum.[1,1]): The
	  main program must catch exceptions.

2004-08-04 Wednesday 16:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.70): Some things to do will only be done in PPL 0.7 or
	  later version.

2004-08-04 Wednesday 15:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Interval.defs.hh, Interval.inlines.hh (altnum.[2,2]):
	  Returning by const reference when appropriate. (numerator and
	  denominator).

2004-08-04 Wednesday 15:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Checked_Integer.defs.hh, Checked_Integer.inlines.hh,
	  Native_Integer.defs.hh, Native_Integer.inlines.hh
	  (altnum.[2,2,2,2]): Use Integer_macros.hh to declare and define
	  all the required functions.

2004-08-04 Wednesday 15:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (altnum.2): Wrongly-named variable references
	  fixed.

2004-08-04 Wednesday 15:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Integer_macros.hh, Makefile.am (altnum.[1,2]): Helper
	  macros for the implementation of Native_Integer and
	  Checked_Integer.

2004-08-04 Wednesday 15:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (altnum.1): Temporarily disable the `interfaces'
	  directory.

2004-08-04 Wednesday 13:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS, configure.ac, src/BoundingBox.cc,
	  src/BoundingBox.defs.hh, src/BoundingBox.inlines.hh,
	  src/Checked_Integer.defs.hh, src/Checked_Integer.inlines.hh,
	  src/Checked_Integer.types.hh, src/ConSys.cc, src/ConSys.defs.hh,
	  src/Constraint.defs.hh, src/Constraint.inlines.hh,
	  src/GMP_Integer.defs.hh, src/GMP_Integer.inlines.hh,
	  src/GMP_Integer.types.hh, src/GenSys.cc, src/GenSys.defs.hh,
	  src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/Integer.defs.hh,
	  src/Integer.types.hh, src/Integer_traits_template.hh,
	  src/Interval.defs.hh, src/Interval.inlines.hh,
	  src/LinExpression.cc, src/LinExpression.defs.hh,
	  src/LinExpression.inlines.hh, src/Makefile.am, src/Matrix.cc,
	  src/Native_Integer.defs.hh, src/Native_Integer.inlines.hh,
	  src/Native_Integer.types.hh, src/Polyhedron.defs.hh,
	  src/Polyhedron.inlines.hh, src/Polyhedron_nonpublic.cc,
	  src/Polyhedron_public.cc, src/Polyhedron_widenings.cc,
	  src/Row.cc, src/Row.defs.hh, src/Row.inlines.hh,
	  src/conversion.cc, src/globals.cc, src/globals.hh, tests/BBox.cc,
	  tests/BBox.hh, tests/Makefile.am
	  (altnum.[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]):
	  Imported, with changes, from the `altnum' branch of the students'
	  repository.  As the Purenum project seems dead, support for
	  Purenum has been evicted.  Notice that both native and checked
	  integers do not currently work due to the absence of some
	  relational operators.

2004-07-15 Thursday 18:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.18): Option `-c' (`--check')
	  implemented.

2004-07-15 Thursday 17:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/examples/: 1d.ine (1.1), 1da.ine (1.1), cp4.ext
	  (1.1), cp4.ine (1.1), cp5.ext (1.1), cp5.ine (1.1), cp6.ext
	  (1.1), cp6.ine (1.1), cp7.ext (1.1), cross4.ine (1.1), cube.ext
	  (1.1), cube.ine (1.1), cubetop.ine (1.1), cut16_11.ext (1.1),
	  cut32_16.ext (1.1), cyc.ine (1.1), cyclic17_8.ine (1.1),
	  cyclic25_13.ext (1.1), diamond.ine (1.1), in0.ine (1.1), in1.ine
	  (1.1), in2.ine (1.1), in3.ine (1.1), in4.ine (1.1), in5.ine
	  (1.1), in6.ine (1.1), in7.ine (1.1), kq20_11_m.ine (1.1),
	  metric40_11.ine (1.1), metric80_16.ine (1.1), mit.ine (1.1),
	  mit288-281.ine (1.1), mit31-20.ine (1.1), mit41-16.ine (1.1),
	  mit708-9.ine (1.1), mit71-61.ine (1.1), mit90-86.ine (1.1),
	  mp5.ext (1.1), mp5.ine (1.1), mp5a.ine (1.1), mp6.ine (1.1),
	  trunc10.ine (1.1), trunc7.ine (1.1), tsp5.ext (1.1), tsp5.ine
	  (1.1): Borrowed, with some minor changes, from lrslib 042.

2004-07-15 Thursday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/examples/: allzero.ine (1.1), ccc4.ext (1.1),
	  ccc5.ext (1.1), ccc6.ext (1.1), ccp4.ext (1.1), ccp5.ext (1.1),
	  ccp6.ext (1.1), cross10.ine (1.1), cross12.ine (1.1), cross6.ine
	  (1.1), cross8.ine (1.1), cube10.ine (1.1), cube12.ine (1.1),
	  cube3.ine (1.1), cube6.ine (1.1), cube8.ine (1.1), cubocta.ine
	  (1.1), cyclic10-4.ext (1.1), cyclic12-6.ext (1.1), cyclic14-8.ext
	  (1.1), cyclic16-10.ext (1.1), dodeca_m.ine (1.1), ex1.ine (1.1),
	  grcubocta.ine (1.1), hexocta.ine (1.1), icododeca_m.ine (1.1),
	  infeas.ine (1.1), integralpoints.ine (1.1), irbox20-4.ext (1.1),
	  irbox200-4.ext (1.1), kkd18_4.ine (1.1), kkd27_5.ine (1.1),
	  kkd38_6.ine (1.1), nonfull.ine (1.1), origin.ine (1.1),
	  prodst62.ext (1.1), project1_m.ine (1.1), project1res.ine (1.1),
	  project2_m.ine (1.1), project2res.ine (1.1), rcubocta.ine (1.1),
	  redcheck.ext (1.1), reg24-5.ext (1.1), reg24-5.ine (1.1),
	  reg600-5_m.ext (1.1), rhomtria_m.ine (1.1), sample.ine (1.1),
	  sampleh1.ine (1.1), sampleh2.ine (1.1), sampleh3.ine (1.1),
	  sampleh4.ine (1.1), sampleh5.ine (1.1), sampleh6.ine (1.1),
	  sampleh7.ine (1.1), sampleh8.ine (1.1), samplev1.ext (1.1),
	  samplev2.ext (1.1), samplev3.ext (1.1): Borrowed, with some minor
	  changes, from cddlib 093c.

2004-07-11 Sunday 15:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.17): Append to the output file,
	  instead of truncating it.

2004-07-11 Sunday 15:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.16): Error messages fixed.

2004-07-10 Saturday 19:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.15): Fixed the handling of equality
	  constraints in read_polyhedron().

2004-07-10 Saturday 17:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.14): Corrected input and output of
	  H-representations (a couple of sign errors).	When outputting
	  rational coefficients, print 0 instead of 0/<denominator>.

2004-07-10 Saturday 16:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.13): Bug fixed in function
	  normalize().

2004-07-10 Saturday 14:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.12): Initial implementation of the
	  `project' command (which seems to be unimplemented in the real
	  lcdd).

2004-07-10 Saturday 10:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.11): Started adding a new option to
	  check the result.  Bugs fixed in set_input() and set_output().
	  Reject the `linearity' command when it does not appear before
	  `begin'.

2004-07-10 Saturday 01:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.10): Output made watertight.

2004-07-09 Friday 22:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.9): Several bugs fixed.  Formal
	  parameters tightened.

2004-07-09 Friday 21:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.8): Obey the `-o' option.

2004-07-09 Friday 21:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.7): Make sure every non-empty
	  generator system we create has at least one point.

2004-07-09 Friday 18:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.6): Input made more robust.

2004-07-09 Friday 17:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.5): Make sure points are created
	  with the right denominator.

2004-07-09 Friday 16:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.4): Bug fixed in
	  write_polyhedron().

2004-07-09 Friday 15:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.3): Input/output rewritten.

2004-07-09 Friday 09:50  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.81): Some reorganisation of test
	  predicates to match order of tests.  Improved handling of
	  deletion of polyhedra in the exception tests.

2004-07-09 Friday 08:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/ppl_lcdd/ppl_lcdd.cc (1.2): Started drafting the output
	  function.  Several other improvements.

2004-07-09 Friday 08:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/.cvsignore (1.3): Put under CVS control.

2004-07-09 Friday 08:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.114), demos/.cvsignore (1.2), demos/Makefile.am
	  (1.2), demos/ppl_lcdd.cc (1.2), demos/ppl_lcdd/.cvsignore (1.1),
	  demos/ppl_lcdd/Makefile.am (1.1), demos/ppl_lcdd/ppl_lcdd.cc
	  (1.1): The `ppl_lcdd' demo has now its own subdirectory.

2004-07-08 Thursday 16:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.16): Spacing fixed.

2004-07-08 Thursday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.113): Added checks for getopt.h and signal.h.
	  Added demos/Makefile to the output list.

2004-07-08 Thursday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.24): Added `demos' to `SUBDIR'.

2004-07-08 Thursday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* demos/: .cvsignore (1.1), Makefile.am (1.1), ppl_lcdd.cc (1.1):
	  `ppl_lcdd' is a sort of clone of the cddlib test program `lcdd'.

2004-07-08 Thursday 16:40  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.109): Brief
	  descriptions of the new interface predicates are added.

2004-07-08 Thursday 12:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.108): New Prolog
	  interface predicates recently added have been added to the PPL
	  Predicate List in the documentation for this interface.

2004-05-26 Wednesday 16:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.228): Fixed examples involving
	  ConSys::insert() and GenSys::insert().

2004-05-26 Wednesday 16:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.86): Mention the documentation improvements.

2004-05-21 Friday 22:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.112): Tests reordered so that an invalid
	  combination of compiler options is detected earlier and diagnosed
	  in an intelligible way.

2004-05-09 Sunday 17:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.15): Anachronisms removed.

2004-05-09 Sunday 14:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* STANDARDS (1.11), src/Polyhedra_PowerSet.inlines.hh (1.31),
	  src/Polyhedron_public.cc (1.21), src/Polyhedron_widenings.cc
	  (1.17), src/simplify.cc (1.34), tests/bhrz03widening14.cc (1.5),
	  tests/bhrz03widening15.cc (1.7): All other things being equal,
	  always prefer preincrement and predecrement to postincrement and
	  postdecrement.

2004-05-09 Sunday 12:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_chdims.cc (1.9): Redundant test avoided.

2004-05-08 Saturday 15:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.68), Matrix.defs.hh (1.56),
	  Polyhedron.inlines.hh (1.90): New declaration and implementation
	  of Matrix::permute_columns().  Implementation of
	  Polyhedron::map_dimensions() improved.

2004-05-08 Saturday 14:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.21): Missing dependency
	  added.

2004-05-07 Friday 21:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.7): Code reordered.

2004-05-07 Friday 21:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.51):
	  Integer_to_integer_term() fixed.

2004-05-07 Friday 21:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/.cvsignore (1.5): Updated.

2004-05-07 Friday 19:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.6): Small improvement to
	  a comment.

2004-05-07 Friday 19:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.5): Kludge to to test the
	  Prolog interface exceptions when converting PPL integers to XSB
	  Prolog integer terms.

2004-05-07 Friday 19:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BHRZ03_Certificate.cc (1.1), BHRZ03_Certificate.defs.hh
	  (1.1), BHRZ03_Certificate.inlines.hh (1.1),
	  BHRZ03_Certificate.types.hh (1.1): Put under CVS control.

2004-05-07 Friday 19:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Makefile.am (1.70), Polyhedron.defs.hh (1.227),
	  Polyhedron_widenings.cc (1.16): Changed to use the new
	  BHRZ03_Certificate class.  Current implementation for NNC
	  polyhedra is an inefficient kludge, but should be correct. It
	  will become efficient as soon as we implement lazy procedures for
	  eps-minimization of NNC polyhedra.

2004-05-07 Friday 19:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.20): Avoid code
	  duplication: Integer_to_integer_term() now uses
	  Prolog_put_long().

2004-05-07 Friday 18:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/.cvsignore (1.5), SICStus/.cvsignore
	  (1.5), SWI/.cvsignore (1.5), XSB/.cvsignore (1.4), YAP/.cvsignore
	  (1.5): Updated.

2004-05-07 Friday 18:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/fake_main.pl (1.2): This is not necessary
	  with new versions of Ciao Prolog.

2004-05-07 Friday 18:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.27): The previous change
	  did not take into account that `ciaoc' always writes the object
	  file in the same directory where the sources reside.	Copies
	  restored, but now the copies are written in the right place.

2004-05-07 Friday 18:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/.cvsignore (1.3), src/.cvsignore (1.7),
	  tests/.cvsignore (1.8): Updated.

2004-05-07 Friday 17:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: Makefile.am (1.26), ciao_clpq.pl (1.9),
	  ciao_clpq2.pl (1.4), ciao_pl_check.pl (1.2): New versions of Ciao
	  Prolog no longer require the sources to be copied.

2004-05-07 Friday 11:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/Makefile.am (1.25), SICStus/Makefile.am
	  (1.41), SWI/Makefile.am (1.34): Clean things up after `make
	  check'.

2004-05-07 Friday 10:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.80): Additional tests for system
	  dependent exceptions when the integer values are max, max+1, min,
	  or min-1.

2004-05-07 Friday 10:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.79): More and improved tests for
	  exceptions.  Code better commented and additional predicates for
	  i/o etc reorganised.

2004-05-07 Friday 10:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.4): Corrected typo.

2004-05-07 Friday 10:21  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.3): Added a definition
	  for current_prolog_flag/3.

2004-05-07 Friday 09:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.19):
	  Integer_to_integer_term() fixed.

2004-05-06 Thursday 10:37  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.78): More tests for ppl Prolog
	  interface exceptions added.

2004-05-05 Wednesday 15:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/: Makefile.am (1.33), swi_pl_check.pl
	  (1.1): Use also pl_check.pl to test the SWI-Prolog interface.

2004-05-05 Wednesday 15:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.40), sp_pl_check.pl
	  (1.1): Use also pl_check.pl to test the SICStus-Prolog interface.

2004-05-05 Wednesday 15:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: Makefile.am (1.24), ciao_pl_check.pl
	  (1.1): Use also pl_check.pl to test the Ciao-Prolog interface.

2004-05-05 Wednesday 10:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.77): Comment added explaining
	  new code for exceptions tests

2004-05-05 Wednesday 10:00  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.76): New tests for checking some
	  possible exceptions in the C++ and Prolog interface added.

2004-05-04 Tuesday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.226): Documentation for
	  Polyhedron::expand_dimension() improved.  New method void
	  Polyhedron::void fold_dimensions(const Variables_Set&
	  to_be_folded, Variable var) declared: documentation still to be
	  written.

2004-05-04 Tuesday 21:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.128), src/Polyhedron.defs.hh (1.225): New
	  declaration and documentation for void
	  Polyhedron::expand_dimension(Variable var, dimension_type m).

2004-05-04 Tuesday 15:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.127): Added a section on the new
	  `expand_dimension' operation.

2004-05-04 Tuesday 15:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.126): Additions to the bibliography.

2004-05-04 Tuesday 14:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.125): Definition of `map_dimensions'
	  improved.

2004-04-30 Friday 21:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: exceptions.hh (1.11), ppl_prolog.icc (1.128),
	  Ciao/ppl_ciao.cc (1.23), GNU/ppl_gprolog_sd.cc (1.18),
	  SICStus/ppl_sicstus_sd.cc (1.60), SWI/ppl_swiprolog.cc (1.85),
	  XSB/ppl_xsb.cc (1.50), YAP/ppl_yap.cc (1.78): Deal with different
	  representations for integers in Prolog and C++ code.

2004-04-30 Friday 19:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.104): Handle std::overflow_error.

2004-04-30 Friday 17:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.103), ppl_c.h.in (1.27): Missing
	  try/catch blocks added.  Interface changed for
	  ppl_version_major(), ppl_version_minor(), ppl_version_revision(),
	  ppl_version_beta(), ppl_version() and ppl_banner().

2004-04-30 Friday 16:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.102): CATCH_ALL fixed: was translating
	  std::exception to PPL_ERROR_INTERNAL_ERROR instead of
	  PPL_ERROR_UNKNOWN_STANDARD_EXCEPTION.

2004-04-27 Tuesday 14:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.111), interfaces/OCaml/.cvsignore (1.3),
	  interfaces/OCaml/Makefile.am (1.8), interfaces/OCaml/gmp.h (1.2),
	  interfaces/OCaml/ppl_ocaml_c.swg (1.3): Our OCaml interface will
	  not be based on SWIG.

2004-04-26 Monday 23:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/yap_pl_check.pl (1.5): Previous change
	  reverted.

2004-04-26 Monday 22:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/YAP/yap_pl_check.pl (1.4): Paths to pl_check.pl
	  and yap_pl_check.pl need to allow for working in a separate build
	  directory.

2004-04-26 Monday 22:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.75): Bug fixed in
	  "format_banner" code.  Definitions of "make_noisy" and
	  "make_quiet" corrected.  Added a new top-level predicate
	  "check_noisy/0" since "check_all" is now forced to be quiet.	A
	  redundant temporary test removed.

2004-04-26 Monday 22:36  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.127): Removed unwanted line
	  in ..._relations_with_constraints procedure.	Modified
	  .._relations_with_generator procedure to be in line with changes
	  to ..._relations_with_constraints procedure.

2004-04-26 Monday 17:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.126): Do not call any
	  Prolog_put_*() function on a destination term that does not
	  represent a free variable.

2004-04-26 Monday 17:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.20): Infrastructure for
	  automatic testing with pl_check.pl completed.

2004-04-26 Monday 17:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/xsb_pl_check.P (1.2): Initial goal fixed.

2004-04-26 Monday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: Makefile.am (1.19), xsb_pl_check.P (1.1):
	  Use also pl_check.pl when testing the XSB interface.

2004-04-26 Monday 15:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.49): Some assertion fixed: we
	  cannot assume XSB's TRUE evaluates to C++'s true.

2004-04-26 Monday 14:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (1.74): A predicate is either
	  static or dynamic (noisy/1).	The predicate retractall/1 is
	  non-standard: do not use it.

2004-04-25 Sunday 22:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: exceptions.hh (1.10), ppl_prolog.icc (1.125):
	  New error handling code completed.

2004-04-25 Sunday 22:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* depcomp (1.7), install-sh (1.8), mkinstalldirs (1.7),
	  Watchdog/depcomp (1.5), Watchdog/install-sh (1.5),
	  Watchdog/mkinstalldirs (1.3): Updated from Automake 1.8.4.

2004-04-25 Sunday 22:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.124): Previous changes
	  reverted.  Rewritten a good part of the error handling code.
	  Several bugs fixed.

2004-04-25 Sunday 22:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/exceptions.hh (1.9): Exception classes revised.

2004-04-25 Sunday 22:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.84): Prolog_put_long()
	  and Integer_to_integer_term() implemented properly.  Added
	  Prolog_put_ulong().

2004-04-25 Sunday 22:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.59): The wrong
	  exception was thrown by integer_term_to_Integer(): fixed.

2004-04-25 Sunday 22:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/sicstus_cfli.ic (1.8): Added
	  Prolog_put_ulong().

2004-04-25 Sunday 22:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.48): Added a temporary, buggy
	  version of Prolog_put_ulong().  All the XSB c2p_*() functions
	  require that the second argument is an unbound variable:
	  assertions added to check that we abide by this rule.

2004-04-25 Sunday 21:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.22),
	  GNU/ppl_gprolog_sd.cc (1.17), YAP/ppl_yap.cc (1.77): Added a
	  temporary, buggy version of Prolog_put_ulong().

2004-04-25 Sunday 21:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (1.73): Previous changes reverted.

2004-04-25 Sunday 11:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.72), ppl_prolog.icc (1.123):
	  Bug in an interface predicate
	  (ppl_Polyhedron_relation_with_constraints) that only caused an
	  error with the XSB interface now fixed.  pl_check revised to
	  avoid warning messages with XSB compiler.

2004-04-24 Saturday 23:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.83): SWI Prolog does
	  not support unlimited precision integers.

2004-04-24 Saturday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.21): If GMP does not support exceptions this
	  test is pointless.

2004-04-24 Saturday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.69): Flags for ICC changed.

2004-04-24 Saturday 14:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.34): Use the C++ compiler to
	  compile and link.  Do not mention -lstcd++.

2004-04-24 Saturday 10:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.16): Work around
	  gprolog.h namespace pollution.

2004-04-24 Saturday 10:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.122): Include
	  "max_space_dimension.hh".

2004-04-24 Saturday 10:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.101): Include "max_space_dimension.hh".

2004-04-24 Saturday 10:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.85): Explain the changes concerning the
	  max_space_dimension() functions.

2004-04-24 Saturday 10:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.inlines.hh (1.16), max_space_dimension.hh
	  (1.2): C_Polyhedron::max_space_dimension() fixed.

2004-04-24 Saturday 10:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.defs.hh (1.95), GenSys.inlines.hh (1.33): New
	  function GenSys::max_space_dimension().

2004-04-24 Saturday 10:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.82), ConSys.inlines.hh (1.32): New
	  function ConSys::max_space_dimension().

2004-04-24 Saturday 09:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.inlines.hh (1.44): Spurious newline removed.

2004-04-24 Saturday 09:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.defs.hh (1.55), Matrix.inlines.hh (1.37): New
	  functions Matrix::max_num_rows() and Matrix::max_num_columns().

2004-04-24 Saturday 09:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.defs.hh (1.77), Row.inlines.hh (1.43): New functions
	  Row::Impl::max_size() and Row::max_size().

2004-04-24 Saturday 08:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.21), C_Polyhedron.inlines.hh
	  (1.15), Makefile.am (1.69), NNC_Polyhedron.defs.hh (1.24),
	  NNC_Polyhedron.inlines.hh (1.17), Polyhedra_PowerSet.defs.hh
	  (1.20), Polyhedra_PowerSet.inlines.hh (1.30), Polyhedron.defs.hh
	  (1.224), algorithms.hh (1.27), globals.hh (1.35),
	  max_space_dimension.hh (1.1): The function
	  Parma_Polyhedra_Library::max_space_dimension() has been given a
	  new semantics and destiny: it returns the maximum space dimension
	  that _all_ the abstractions provided by the library can handle.
	  Each individual abstraction provides its versions of this
	  function.  Thus, e.g., NNC_Polyhedron::max_space_dimension()
	  gives the maximum space dimensions an NNC_Polyhedron can handle.

2004-04-24 Saturday 08:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Interval.inlines.hh (1.12), Topology.hh (1.9),
	  initializer.hh (1.8): Comment added.

2004-04-24 Saturday 00:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.32): Pass the C and C++
	  compilers to plld.

2004-04-23 Friday 18:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.71), ppl_prolog.icc (1.121),
	  Ciao/ppl_ciao.pl (1.64), GNU/ppl_gprolog.pl (1.43),
	  SICStus/ppl_sicstus_sd.cc (1.58), SWI/ppl_swiprolog.cc (1.82),
	  XSB/ppl_xsb.H (1.30), XSB/ppl_xsb.cc (1.47), YAP/ppl_yap.cc
	  (1.76): Minimize and maximize with generator point predicates
	  added.

2004-04-23 Friday 16:10  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.63): Interface definitions
	  for the banner predicate corrected.

2004-04-23 Friday 15:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.46): Temporary, kludgy
	  definitions for `bool Prolog_has_unbounded_integers' and `long
	  Prolog_max_integer'.	Comments added.

2004-04-23 Friday 14:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.21),
	  GNU/ppl_gprolog_sd.cc (1.15), SICStus/ppl_sicstus_sd.cc (1.57),
	  SWI/ppl_swiprolog.cc (1.81), YAP/ppl_yap.cc (1.75): Define `bool
	  Prolog_has_unbounded_integers' and `long Prolog_max_integer'.
	  Comments added.

2004-04-23 Friday 11:16  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.70), ppl_prolog.icc (1.120),
	  Ciao/ppl_ciao.pl (1.62), GNU/ppl_gprolog.pl (1.42),
	  SICStus/ppl_sicstus_sd.cc (1.56), SWI/ppl_swiprolog.cc (1.80),
	  XSB/ppl_xsb.H (1.29), XSB/ppl_xsb.cc (1.45), YAP/ppl_yap.cc
	  (1.74): ppl_banner added. pl_check revised so that check_all
	  calls for checks on all recently added predicates.

2004-04-23 Friday 09:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.119), Ciao/Makefile.am
	  (1.23), GNU/Makefile.am (1.33), SICStus/Makefile.am (1.39),
	  SWI/Makefile.am (1.31), XSB/Makefile.am (1.18), YAP/Makefile.am
	  (1.25): Follow our programming conventions concerning code
	  formatting.  Do not include "version.hh.in": include "version.hh"
	  instead.

2004-04-23 Friday 07:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.61): Ciao interface for the
	  additional ppl predicates corrected.

2004-04-22 Thursday 12:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.69), ppl_prolog.icc (1.118),
	  Ciao/ppl_ciao.pl (1.60), GNU/ppl_gprolog.pl (1.41),
	  SICStus/ppl_sicstus_sd.cc (1.55), SWI/ppl_swiprolog.cc (1.79),
	  XSB/ppl_xsb.H (1.28), XSB/ppl_xsb.cc (1.44), YAP/ppl_yap.cc
	  (1.73): Added version predicates and maximum dimension predicate.

2004-04-22 Thursday 07:51  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.68), ppl_prolog.icc (1.117),
	  Ciao/ppl_ciao.pl (1.59), GNU/ppl_gprolog.pl (1.40),
	  SICStus/ppl_sicstus_sd.cc (1.54), SWI/ppl_swiprolog.cc (1.78),
	  XSB/ppl_xsb.H (1.27), XSB/ppl_xsb.cc (1.43), YAP/ppl_yap.cc
	  (1.72): Added predicates ppl_Polyhedron_maximize/5 and
	  ppl_Polyhedron_minimize/5.  A second version of the same
	  predicates with 6 arguments is still needed.

2004-04-21 Wednesday 15:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.37), exceptions2.cc (1.31): We were not
	  flagging as errors the cases where an exception that must be
	  thrown is not thrown.

2004-04-21 Wednesday 14:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.68): Remember to explain how to use the Intel C/C++
	  compiler.

2004-04-21 Wednesday 14:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.195), exceptions3.cc (1.1): New test
	  program: this shows that we are not checking against attempts of
	  building polyhedra with a dimension greater than
	  max_space_dimension() (which results in violated assertions and
	  who knows what other nasty things).

2004-04-21 Wednesday 14:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.36), exceptions2.cc (1.30): Comment
	  improved.

2004-04-21 Wednesday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: bgp99extrapolation1.cc (1.3), bhz03widening1.cc (1.4),
	  bhz03widening2.cc (1.4), dualhypercubes.cc (1.4): Avoid defining
	  things in the global namespace.

2004-04-21 Wednesday 08:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.26): The function check_containment(const
	  PH&, const Polyhedra_PowerSet<PH>&s) is now declared before being
	  defined.

2004-04-21 Wednesday 08:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.100): Use the `%u' conversion specifier
	  (not `%d') for the conversion of an object of type
	  ppl_dimension_type.

2004-04-21 Wednesday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.26): Unused SWIG stuff removed.

2004-04-19 Monday 14:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.67): Fixed Matrix::permute_columns().

2004-04-19 Monday 14:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.89): Avoid useless parentheses.

2004-04-19 Monday 14:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.194), mapdim3.cc (1.1): New test for
	  Polyhedron::map_dimensions().

2004-04-19 Monday 08:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.88): Comment improved.

2004-04-19 Monday 08:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/mapdim2.cc (1.2): Add some variety in the tested
	  conditions.

2004-04-19 Monday 08:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.84), src/Polyhedron.inlines.hh (1.87): The method
	  Polyhedron::map_dimensions(const PartialFunction& pfunc) has been
	  significantly optimized for the case when `pfunc' is a
	  permutation.	A simple "renaming" of the dimensions is now
	  extremely cheap.

2004-04-18 Sunday 21:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.66), Matrix.defs.hh (1.54): Added
	  Matrix::permute_columns().

2004-04-18 Sunday 13:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.18): Spacing fixes in comments.

2004-04-18 Sunday 13:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_public.cc (1.20): Two messages fixed in
	  Polyhedron::OK().

2004-04-17 Saturday 23:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.65): Matrix::swap_columns() improved.  Be
	  consistent in variable names.

2004-04-17 Saturday 20:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.defs.hh (1.76): Mathematical objects whose name is more
	  than one character long are typeset in Roman.

2004-04-17 Saturday 19:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.124): Mathematical objects whose name is
	  more than one character long are typeset in Roman.  Fixed two
	  other font mistakes.

2004-04-17 Saturday 16:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.193): Put more things in the convenience
	  library `libppl_tests'.

2004-04-17 Saturday 15:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.192), mapdim2.cc (1.1): New test for
	  Polyhedron::map_dimensions().

2004-04-16 Friday 16:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.191), boundedh79extrapolation1.cc (1.1):
	  Test Polyhedron::bounded_H79_extrapolation_assign().

2004-04-06 Tuesday 21:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.22), config.sub (1.21), ltmain.sh (1.18),
	  Watchdog/config.guess (1.6), Watchdog/config.sub (1.6),
	  Watchdog/ltmain.sh (1.7): Updated from libtool-1.5.4.

2004-03-06 Saturday 09:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.67), src/ConSys.defs.hh (1.81), src/GenSys.defs.hh
	  (1.94), src/LinExpression.defs.hh (1.63), src/Matrix.defs.hh
	  (1.53): Matrix::ascii_dump(), Matrix::ascii_load(),
	  LinExpression::~LinExpression(), Matrix::~Matrix(),
	  ConSys::~ConSys(), GenSys::~GenSys() and
	  ConSys::const_iterator::~const_iterator() are no longer virtual.

2004-03-04 Thursday 07:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.defs.hh (1.86):
	  Constraint::Constraint(LinExpression& e) made explicit.

2004-02-25 Wednesday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.66): Added a (monster) configure command line to compile
	  with Comeau C/C++ compiler.

2004-02-25 Wednesday 14:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.65): Started adding instructions on how to compile with
	  other C++ compilers.

2004-02-24 Tuesday 19:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.25): Fixed the comments for
	  ppl_Polyhedron_minimize() and ppl_Polyhedron_maximize().

2004-02-22 Sunday 18:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.20), AskTell.inlines.hh (1.21):
	  AskTell<CS>::add_constraints() now takes a ConSys by const
	  reference.

2004-02-22 Sunday 18:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.29): Avoid making
	  unnecessary copies.

2004-02-22 Sunday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron_public.cc (1.19), Polyhedron_widenings.cc
	  (1.15): Use the add_recycled_*() methods whenever necessary or
	  desirable.

2004-02-22 Sunday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.cc (1.8), NNC_Polyhedron.cc (1.12),
	  Polyhedra_PowerSet.inlines.hh (1.28), Polyhedron_public.cc
	  (1.18), Polyhedron_widenings.cc (1.14): Use the add_recycled_*()
	  methods whenever necessary or desirable.

2004-02-22 Sunday 17:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.99): The function snprintf() is not in
	  standard C++: use sprintf() instead, but play safely anyway.

2004-02-22 Sunday 16:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.24): Non-standard trailing comma
	  removed from enumeration.

2004-02-22 Sunday 16:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.98): Meaningless type qualifiers
	  removed.

2004-02-22 Sunday 16:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.83), TODO (1.64), interfaces/C/ppl_c.cc (1.97),
	  interfaces/C/ppl_c.h.in (1.23), src/Polyhedron.defs.hh (1.223),
	  src/Polyhedron_public.cc (1.17): The methods void
	  Polyhedron::add_constraints(ConSys& cs), void
	  Polyhedron::add_generators(GenSys& gs), bool
	  Polyhedron::add_constraints_and_minimize(ConSys& cs), and bool
	  Polyhedron::add_generators_and_minimize(GenSys& gs) have been
	  renamed void Polyhedron::add_recycled_constraints(ConSys& cs),
	  void Polyhedron::add_recycled_generators(GenSys& gs), bool
	  Polyhedron::add_recycled_constraints_and_minimize(ConSys& cs),
	  and bool Polyhedron::add_recycled_generators_and_minimize(GenSys&
	  gs), respectively. At the same time, the methods void
	  Polyhedron::add_constraints(const ConSys& cs), void
	  Polyhedron::add_generators(const GenSys& gs), bool
	  Polyhedron::add_constraints_and_minimize(const ConSys& cs), and
	  bool Polyhedron::add_generators_and_minimize(const GenSys& gs)
	  have been added. Corresponding changes have been made to the C
	  interface.

2004-02-22 Sunday 15:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.rpath (1.2): Support Comeau's C/C++ compiler.

2004-02-16 Monday 18:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.defs.hh (1.75): Comments fixed.

2004-02-12 Thursday 15:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.defs.hh (1.52), Matrix.inlines.hh (1.36): Do not put
	  code into files named *.defs.hh.

2004-02-09 Monday 08:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.27): All names that are not
	  dependent on template parameters are bound to their present
	  definitions when parsing a template function or class: make sure
	  elements of the base class are correctly referred to.

2004-02-08 Sunday 21:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.110): Fixed some error messages.

2004-02-08 Sunday 21:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/AskTell.inlines.hh (1.20): Missing `typename' added.

2004-02-06 Friday 11:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.109): Disable the interface/OCaml directory, for
	  the time being.

2004-02-05 Thursday 22:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Makefile.am (1.9): Ignore the OCaml subdirectory, for
	  the time being.

2004-02-05 Thursday 22:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.108): Version number bumped.

2004-02-05 Thursday 21:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.96): Output functions fixed.

2004-02-05 Thursday 21:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.95), ppl_c.h.in (1.22): New functions
	  ppl_io_print_variable() and ppl_io_fprint_variable().

2004-02-05 Thursday 21:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.82), interfaces/C/ppl_c.cc (1.94), src/Variable.cc
	  (1.16), src/Variable.defs.hh (1.36), src/Variable.inlines.hh
	  (1.18), tests/writevariable1.cc (1.10):
	  Variable::Output_Function_Type renamed
	  Variable::output_function_type.

2004-02-05 Thursday 20:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.93): cxx_Variable_output_function()
	  partly fixed.

2004-02-05 Thursday 20:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Variable.defs.hh (1.35): Comment corrected.

2004-02-05 Thursday 20:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.92), ppl_c.h.in (1.21): New functions
	  ppl_io_set_variable_output_function() and
	  ppl_io_get_variable_output_function().

2004-02-05 Thursday 19:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.91): Implemented most of the machinery
	  allowing the user to select its preferred output function for
	  Variable objects,

2004-02-05 Thursday 16:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.20): Make Doxygen comments uniformly
	  brief.

2004-02-05 Thursday 15:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/Makefile.am (1.7): Add `-I../C' to
	  libppl_ocaml_c_la_CPPFLAGS.

2004-02-05 Thursday 14:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.90), ppl_c.h.in (1.19): Documentation
	  improvements.

2004-02-05 Thursday 14:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: user-browse.doxyconf-latex.in (1.19),
	  user-print.doxyconf-latex.in (1.19), user.doxyconf-html.in
	  (1.21): Add PPL_DECLARE_PRINT_FUNCTIONS to EXPAND_AS_DEFINED.

2004-02-05 Thursday 14:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.18): Make sure not to leave
	  unnecessary preprocessor symbols behind.

2004-02-05 Thursday 14:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.89), ppl_c.h.in (1.17): A first,
	  tentative implementation of the new print functions.	New error
	  codes PPL_STDIO_ERROR and PPL_ARITHMETIC_OVERFLOW.

2004-02-05 Thursday 09:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.16): Added a kludge to make the
	  documentation on how to use the C interface easier to find.

2004-02-04 Wednesday 18:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.15): A couple of corrections to the
	  usage instructions.

2004-02-04 Wednesday 18:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/C/ppl_c.h.in (1.14): Corrections to the explanation on
	  using the C interface done.

2004-02-04 Wednesday 18:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.13): Two minor fixes.

2004-02-04 Wednesday 16:01  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/C/ppl_c.h.in (1.12): The comment on how to use the C
	  interface revised.

2004-02-04 Wednesday 14:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.11): Documentation on how to use the C
	  interface finished (for the time being, at least).

2004-02-04 Wednesday 14:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.10): Finished the section on linking.

2004-02-04 Wednesday 12:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.9): Started explaining how to link.

2004-02-04 Wednesday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.8): Better explained how to use the -I
	  (or similar) compiler option.

2004-02-04 Wednesday 11:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.7): Finished dealing with version
	  checking.

2004-02-03 Tuesday 22:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.6): Fix thinko in Doxygen's comments.

2004-02-03 Tuesday 22:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/version.cc (1.4): Put new functions into the PPL namespace.

2004-02-03 Tuesday 22:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.88), ppl_c.h.in (1.5): New functions:
	  ppl_version_major(), ppl_version_minor(), ppl_version_revision(),
	  and ppl_version_beta().

2004-02-03 Tuesday 22:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: version.cc (1.3), version.hh.in (1.7): New functions:
	  version_major(), version_minor(), version_revision(), and
	  version_beta().

2004-02-03 Tuesday 14:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.107): Some vertical space added.

2004-02-03 Tuesday 14:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.4): New macro PPL_VERSION added.

2004-02-03 Tuesday 10:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h.in (1.3): Started dealing with version
	  checking.

2004-02-03 Tuesday 09:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: Makefile.am (1.16), ppl_c.cc (1.87), ppl_c.h.in
	  (1.2): New C interface functions ppl_version() and ppl_banner().

2004-02-03 Tuesday 09:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/version.hh.in (1.6): Tell emacs that this is C++.

2004-02-03 Tuesday 09:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.106), doc/Makefile.am (1.25),
	  doc/devref-browse.doxyconf-latex.in (1.35),
	  doc/devref-print.doxyconf-latex.in (1.35),
	  doc/devref.doxyconf-html.in (1.36),
	  doc/user-browse.doxyconf-latex.in (1.18),
	  doc/user-print.doxyconf-latex.in (1.18),
	  doc/user.doxyconf-html.in (1.20), interfaces/C/ppl_c.h (1.100),
	  interfaces/C/ppl_c.h.in (1.1), interfaces/OCaml/Makefile.am
	  (1.6): The C interface's header file `ppl_c.h' is now generated
	  at configuration time from `ppl_c.h.in' so as to carry the proper
	  version information.

2004-02-02 Monday 18:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.86), ppl_c.h (1.99): Now
	  ppl_initialize() and ppl_finalize() return
	  PPL_ERROR_INVALID_ARGUMENT if called when they should not.

2004-02-02 Monday 14:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.98): Explain initialization and
	  finalization in the C interface.

2004-02-02 Monday 08:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.97): Explained what to do in case
	  `#include <ppl_c.h>' seems not to work.  Explained what opaque
	  data types are and why we use them.

2004-02-01 Sunday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.96): Explain the usage of the header file
	  for the C interface and its name space.

2004-02-01 Sunday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: gpl.dox (1.6), gpl.tex (1.2): Avoid excessive
	  capitalization.

2004-02-01 Sunday 09:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.tex (1.13), fdl.dox (1.6), fdl.tex (1.2), user.tex
	  (1.14): The documentation is now distributed under the terms of
	  version 1.2 of the GNU Free Documentation License.

2004-01-28 Wednesday 18:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/.cvsignore (1.2): Updated.

2004-01-28 Wednesday 18:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/Makefile.am (1.5): Seriously hacked so that
	  files are created in the right places.

2004-01-28 Wednesday 17:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/gmp.h (1.1): Hacked version of the main C header
	  file of GMP 4.1.2.  This is to get around some bugs and
	  limitations of SWIG 1.3.21.

2004-01-28 Wednesday 09:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Makefile.am (1.8), Watchdog/README (1.6),
	  Watchdog/Watchdog.cc (1.14), Watchdog/Watchdog.defs.hh (1.12),
	  Watchdog/Watchdog.inlines.hh (1.10), Watchdog/Watchdog.types.hh
	  (1.5), Watchdog/configure.ac (1.19), Watchdog/pwl_header.top
	  (1.4), doc/devref.tex (1.12), doc/ppl.sty (1.13), doc/user.tex
	  (1.13), interfaces/Prolog/XSB/ppl_xsb.H (1.26),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.42): Update copyright years.

2004-01-27 Tuesday 23:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.23), README (1.17), configure.ac (1.105),
	  doc/Makefile.am (1.24), doc/definitions.dox (1.123),
	  interfaces/Makefile.am (1.8), interfaces/C/Makefile.am (1.15),
	  interfaces/C/ppl_c.cc (1.85), interfaces/C/ppl_c.h (1.95),
	  interfaces/OCaml/Makefile.am (1.4),
	  interfaces/OCaml/ppl_ocaml_c.swg (1.2),
	  interfaces/Prolog/Makefile.am (1.24),
	  interfaces/Prolog/Prolog_interface.dox (1.107),
	  interfaces/Prolog/clpq.pl (1.15), interfaces/Prolog/clpq2.pl
	  (1.26), interfaces/Prolog/exceptions.hh (1.8),
	  interfaces/Prolog/expected (1.6), interfaces/Prolog/expected2
	  (1.11), interfaces/Prolog/pl_check.pl (1.67),
	  interfaces/Prolog/ppl_prolog.icc (1.116),
	  interfaces/Prolog/track_allocation.hh (1.13),
	  interfaces/Prolog/Ciao/Makefile.am (1.22),
	  interfaces/Prolog/Ciao/ciao_clpq.pl (1.8),
	  interfaces/Prolog/Ciao/ciao_clpq2.pl (1.3),
	  interfaces/Prolog/Ciao/ppl_ciao.cc (1.20),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.58),
	  interfaces/Prolog/GNU/Makefile.am (1.32),
	  interfaces/Prolog/GNU/gnu_pl_check.pl (1.2),
	  interfaces/Prolog/GNU/gp_clpq.pl (1.7),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.39),
	  interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.14),
	  interfaces/Prolog/SICStus/Makefile.am (1.38),
	  interfaces/Prolog/SICStus/ppl_sicstus.pl (1.23),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.53),
	  interfaces/Prolog/SICStus/sicstus_cfli.cc (1.3),
	  interfaces/Prolog/SICStus/sicstus_cfli.h (1.4),
	  interfaces/Prolog/SICStus/sicstus_cfli.ic (1.7),
	  interfaces/Prolog/SICStus/sp_clpq.pl (1.9),
	  interfaces/Prolog/SWI/Makefile.am (1.30),
	  interfaces/Prolog/SWI/pl_clpq.cc (1.7),
	  interfaces/Prolog/SWI/pl_clpq.pl (1.5),
	  interfaces/Prolog/SWI/ppl_pl.cc (1.7),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.77),
	  interfaces/Prolog/SWI/ppl_swiprolog.pl (1.3),
	  interfaces/Prolog/XSB/Makefile.am (1.17),
	  interfaces/Prolog/XSB/expected (1.7),
	  interfaces/Prolog/XSB/expected2 (1.9),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.41),
	  interfaces/Prolog/XSB/xsb_clpq.P (1.8),
	  interfaces/Prolog/XSB/xsb_clpq2.P (1.6),
	  interfaces/Prolog/YAP/Makefile.am (1.24),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.71),
	  interfaces/Prolog/YAP/ppl_yap.pl (1.7),
	  interfaces/Prolog/YAP/yap_clpq.pl (1.7),
	  interfaces/Prolog/YAP/yap_clpq2.pl (1.3),
	  interfaces/Prolog/YAP/yap_pl_check.pl (1.3), m4/Makefile.am
	  (1.10), m4/ac_check_gmp.m4 (1.16), m4/ac_cxx_attribute_weak.m4
	  (1.3), m4/ac_cxx_flexible_arrays.m4 (1.8), src/AskTell.defs.hh
	  (1.19), src/AskTell.inlines.hh (1.19), src/AskTell.types.hh
	  (1.6), src/BoundingBox.cc (1.8), src/BoundingBox.defs.hh (1.11),
	  src/BoundingBox.inlines.hh (1.11), src/BoundingBox.types.hh
	  (1.6), src/C_Polyhedron.cc (1.7), src/C_Polyhedron.defs.hh
	  (1.20), src/C_Polyhedron.inlines.hh (1.14),
	  src/C_Polyhedron.types.hh (1.7), src/ConSys.cc (1.67),
	  src/ConSys.defs.hh (1.80), src/ConSys.inlines.hh (1.31),
	  src/ConSys.types.hh (1.7), src/Constraint.cc (1.40),
	  src/Constraint.defs.hh (1.85), src/Constraint.inlines.hh (1.48),
	  src/Constraint.types.hh (1.7), src/Determinate.defs.hh (1.35),
	  src/Determinate.inlines.hh (1.36), src/Determinate.types.hh
	  (1.5), src/GenSys.cc (1.85), src/GenSys.defs.hh (1.93),
	  src/GenSys.inlines.hh (1.32), src/GenSys.types.hh (1.7),
	  src/Generator.cc (1.48), src/Generator.defs.hh (1.85),
	  src/Generator.inlines.hh (1.42), src/Generator.types.hh (1.7),
	  src/Init.cc (1.10), src/Init.defs.hh (1.10), src/Init.types.hh
	  (1.6), src/Integer.cc (1.4), src/Integer.defs.hh (1.11),
	  src/Integer.inlines.hh (1.10), src/Integer.types.hh (1.8),
	  src/Interval.cc (1.9), src/Interval.defs.hh (1.16),
	  src/Interval.inlines.hh (1.11), src/Interval.types.hh (1.7),
	  src/LinExpression.cc (1.20), src/LinExpression.defs.hh (1.62),
	  src/LinExpression.inlines.hh (1.29), src/LinExpression.types.hh
	  (1.7), src/Makefile.am (1.68), src/Matrix.cc (1.64),
	  src/Matrix.defs.hh (1.51), src/Matrix.inlines.hh (1.35),
	  src/Matrix.types.hh (1.7), src/NNC_Polyhedron.cc (1.11),
	  src/NNC_Polyhedron.defs.hh (1.23), src/NNC_Polyhedron.inlines.hh
	  (1.16), src/NNC_Polyhedron.types.hh (1.7), src/Ph_Status.cc
	  (1.4), src/Ph_Status.idefs.hh (1.4), src/Ph_Status.inlines.hh
	  (1.4), src/Poly_Con_Relation.cc (1.8),
	  src/Poly_Con_Relation.defs.hh (1.23),
	  src/Poly_Con_Relation.inlines.hh (1.11),
	  src/Poly_Con_Relation.types.hh (1.6), src/Poly_Gen_Relation.cc
	  (1.8), src/Poly_Gen_Relation.defs.hh (1.21),
	  src/Poly_Gen_Relation.inlines.hh (1.11),
	  src/Poly_Gen_Relation.types.hh (1.6),
	  src/Polyhedra_PowerSet.defs.hh (1.19),
	  src/Polyhedra_PowerSet.inlines.hh (1.26),
	  src/Polyhedra_PowerSet.types.hh (1.2), src/Polyhedron.defs.hh
	  (1.222), src/Polyhedron.inlines.hh (1.86),
	  src/Polyhedron.types.hh (1.10), src/Polyhedron_chdims.cc (1.8),
	  src/Polyhedron_nonpublic.cc (1.17), src/Polyhedron_public.cc
	  (1.16), src/Polyhedron_widenings.cc (1.13), src/PowerSet.defs.hh
	  (1.46), src/PowerSet.inlines.hh (1.55), src/PowerSet.types.hh
	  (1.6), src/Row.cc (1.60), src/Row.defs.hh (1.74),
	  src/Row.inlines.hh (1.42), src/Row.types.hh (1.7),
	  src/SatMatrix.cc (1.28), src/SatMatrix.defs.hh (1.33),
	  src/SatMatrix.inlines.hh (1.21), src/SatMatrix.types.hh (1.7),
	  src/SatRow.cc (1.22), src/SatRow.defs.hh (1.32),
	  src/SatRow.inlines.hh (1.28), src/SatRow.types.hh (1.7),
	  src/Topology.hh (1.8), src/Variable.cc (1.15),
	  src/Variable.defs.hh (1.34), src/Variable.inlines.hh (1.17),
	  src/Variable.types.hh (1.7), src/algorithms.hh (1.25),
	  src/conversion.cc (1.51), src/globals.cc (1.13), src/globals.hh
	  (1.34), src/initializer.hh (1.7), src/minimize.cc (1.35),
	  src/ppl_header.top (1.7), src/simplify.cc (1.33),
	  src/statistics.hh (1.3), src/version.cc (1.2), src/version.hh.in
	  (1.5), tests/BBox.cc (1.4), tests/BBox.hh (1.3),
	  tests/CbecomesNNC1.cc (1.5), tests/Makefile.am (1.190),
	  tests/NNCminimize1.cc (1.10), tests/NNCminimize2.cc (1.10),
	  tests/NNCminimize3.cc (1.10), tests/NNCminimize4.cc (1.12),
	  tests/NNCminimize5.cc (1.9), tests/NNCminimize6.cc (1.11),
	  tests/PFunction.cc (1.3), tests/PFunction.hh (1.3),
	  tests/addconstraint1.cc (1.5), tests/addconstraint2.cc (1.4),
	  tests/addconstraint3.cc (1.4), tests/addconstraints1.cc (1.11),
	  tests/addconstraints10.cc (1.10), tests/addconstraints11.cc
	  (1.11), tests/addconstraints12.cc (1.4),
	  tests/addconstraints13.cc (1.6), tests/addconstraints2.cc (1.19),
	  tests/addconstraints3.cc (1.9), tests/addconstraints4.cc (1.11),
	  tests/addconstraints5.cc (1.12), tests/addconstraints6.cc (1.13),
	  tests/addconstraints7.cc (1.12), tests/addconstraints8.cc (1.12),
	  tests/addconstraints9.cc (1.13), tests/adddimensions1.cc (1.14),
	  tests/adddimensions10.cc (1.7), tests/adddimensions11.cc (1.5),
	  tests/adddimensions12.cc (1.4), tests/adddimensions13.cc (1.3),
	  tests/adddimensions2.cc (1.10), tests/adddimensions3.cc (1.12),
	  tests/adddimensions4.cc (1.10), tests/adddimensions5.cc (1.8),
	  tests/adddimensions6.cc (1.8), tests/adddimensions7.cc (1.8),
	  tests/adddimensions8.cc (1.6), tests/adddimensions9.cc (1.7),
	  tests/addgenerator1.cc (1.5), tests/addgenerator2.cc (1.5),
	  tests/addgenerator3.cc (1.4), tests/addgenerator4.cc (1.5),
	  tests/addgenerators1.cc (1.12), tests/addgenerators10.cc (1.4),
	  tests/addgenerators11.cc (1.6), tests/addgenerators12.cc (1.6),
	  tests/addgenerators13.cc (1.2), tests/addgenerators2.cc (1.12),
	  tests/addgenerators3.cc (1.12), tests/addgenerators4.cc (1.12),
	  tests/addgenerators5.cc (1.12), tests/addgenerators6.cc (1.12),
	  tests/addgenerators7.cc (1.9), tests/addgenerators8.cc (1.7),
	  tests/addgenerators9.cc (1.6), tests/affineimage1.cc (1.12),
	  tests/affineimage2.cc (1.11), tests/affineimage3.cc (1.4),
	  tests/affineimage4.cc (1.4), tests/affineimage5.cc (1.5),
	  tests/affineimage6.cc (1.4), tests/affineimage7.cc (1.4),
	  tests/affineimage8.cc (1.8), tests/affinepreimage1.cc (1.11),
	  tests/affinepreimage10.cc (1.8), tests/affinepreimage2.cc (1.11),
	  tests/affinepreimage3.cc (1.11), tests/affinepreimage4.cc (1.12),
	  tests/affinepreimage5.cc (1.4), tests/affinepreimage6.cc (1.5),
	  tests/affinepreimage7.cc (1.4), tests/affinepreimage8.cc (1.4),
	  tests/affinepreimage9.cc (1.5), tests/affinetrans.cc (1.14),
	  tests/append1.cc (1.22), tests/append2.cc (1.22),
	  tests/ascii_dump_load1.cc (1.13), tests/ascii_dump_load2.cc
	  (1.11), tests/ascii_dump_load3.cc (1.14),
	  tests/ascii_dump_load4.cc (1.14), tests/ascii_dump_load5.cc
	  (1.10), tests/ascii_dump_load6.cc (1.7),
	  tests/ascii_dump_load7.cc (1.7), tests/bgp99extrapolation1.cc
	  (1.2), tests/bhrz03widening1.cc (1.4), tests/bhrz03widening10.cc
	  (1.4), tests/bhrz03widening11.cc (1.4), tests/bhrz03widening12.cc
	  (1.4), tests/bhrz03widening13.cc (1.4), tests/bhrz03widening14.cc
	  (1.4), tests/bhrz03widening15.cc (1.6), tests/bhrz03widening16.cc
	  (1.4), tests/bhrz03widening17.cc (1.4), tests/bhrz03widening18.cc
	  (1.4), tests/bhrz03widening19.cc (1.4), tests/bhrz03widening2.cc
	  (1.6), tests/bhrz03widening3.cc (1.6), tests/bhrz03widening4.cc
	  (1.4), tests/bhrz03widening5.cc (1.4), tests/bhrz03widening6.cc
	  (1.5), tests/bhrz03widening7.cc (1.5), tests/bhrz03widening8.cc
	  (1.4), tests/bhrz03widening9.cc (1.6), tests/bhz03widening1.cc
	  (1.3), tests/bhz03widening2.cc (1.3), tests/bounded1.cc (1.13),
	  tests/boundingbox1.cc (1.33), tests/boundingbox2.cc (1.18),
	  tests/boundingbox3.cc (1.9), tests/boundingbox4.cc (1.6),
	  tests/bounds1.cc (1.6), tests/bounds2.cc (1.6),
	  tests/concatenate1.cc (1.8), tests/concatenate2.cc (1.8),
	  tests/concatenate3.cc (1.7), tests/concatenate4.cc (1.6),
	  tests/concatenate5.cc (1.4), tests/concatenate6.cc (1.6),
	  tests/constraints1.cc (1.6), tests/constraints2.cc (1.6),
	  tests/constraints3.cc (1.6), tests/constraints4.cc (1.6),
	  tests/contains1.cc (1.5), tests/contains2.cc (1.2),
	  tests/contains3.cc (1.2), tests/contains4.cc (1.2),
	  tests/contains5.cc (1.2), tests/disjoint1.cc (1.7),
	  tests/disjoint2.cc (1.8), tests/disjoint3.cc (1.7),
	  tests/dualhypercubes.cc (1.3), tests/ehandlers.cc (1.5),
	  tests/ehandlers.hh (1.8), tests/empty1.cc (1.14),
	  tests/exceptions1.cc (1.35), tests/exceptions2.cc (1.29),
	  tests/files.cc (1.5), tests/files.hh (1.5),
	  tests/generalizedaffineimage1.cc (1.8),
	  tests/generalizedaffineimage10.cc (1.7),
	  tests/generalizedaffineimage11.cc (1.6),
	  tests/generalizedaffineimage12.cc (1.5),
	  tests/generalizedaffineimage2.cc (1.7),
	  tests/generalizedaffineimage3.cc (1.8),
	  tests/generalizedaffineimage4.cc (1.6),
	  tests/generalizedaffineimage5.cc (1.6),
	  tests/generalizedaffineimage6.cc (1.6),
	  tests/generalizedaffineimage7.cc (1.8),
	  tests/generalizedaffineimage8.cc (1.6),
	  tests/generalizedaffineimage9.cc (1.6), tests/generators1.cc
	  (1.13), tests/generators2.cc (1.9), tests/generators3.cc (1.5),
	  tests/generators4.cc (1.5), tests/generators5.cc (1.5),
	  tests/generators6.cc (1.6), tests/h79widening1.cc (1.6),
	  tests/h79widening2.cc (1.7), tests/h79widening3.cc (1.7),
	  tests/h79widening4.cc (1.4), tests/h79widening5.cc (1.5),
	  tests/h79widening6.cc (1.5), tests/h79widening7.cc (1.3),
	  tests/intersection1.cc (1.6), tests/intersection10.cc (1.6),
	  tests/intersection11.cc (1.6), tests/intersection2.cc (1.10),
	  tests/intersection3.cc (1.7), tests/intersection4.cc (1.7),
	  tests/intersection5.cc (1.7), tests/intersection6.cc (1.7),
	  tests/intersection7.cc (1.6), tests/intersection8.cc (1.5),
	  tests/intersection9.cc (1.5),
	  tests/limitedbhrz03extrapolation1.cc (1.3),
	  tests/limitedh79extrapolation1.cc (1.3),
	  tests/limitedh79extrapolation2.cc (1.3),
	  tests/limitedh79extrapolation3.cc (1.3),
	  tests/limitedh79extrapolation4.cc (1.3),
	  tests/linearpartition1.cc (1.13), tests/linearpartition2.cc
	  (1.13), tests/linearpartition3.cc (1.13), tests/linexpression1.cc
	  (1.4), tests/mapdim1.cc (1.2), tests/max_min1.cc (1.4),
	  tests/max_min2.cc (1.4), tests/mc91.cc (1.14), tests/memory1.cc
	  (1.20), tests/minconstraints1.cc (1.5), tests/minconstraints2.cc
	  (1.5), tests/minconstraints3.cc (1.4), tests/minconstraints4.cc
	  (1.8), tests/mingenerators1.cc (1.5), tests/mingenerators2.cc
	  (1.4), tests/mingenerators3.cc (1.4), tests/onepoint.cc (1.10),
	  tests/permute.cc (1.31), tests/polydifference1.cc (1.7),
	  tests/polydifference2.cc (1.9), tests/polydifference3.cc (1.4),
	  tests/polydifference4.cc (1.5), tests/polydifference5.cc (1.6),
	  tests/polydifference6.cc (1.6), tests/polydifference7.cc (1.5),
	  tests/polyhull1.cc (1.8), tests/polyhull10.cc (1.4),
	  tests/polyhull2.cc (1.7), tests/polyhull3.cc (1.7),
	  tests/polyhull4.cc (1.6), tests/polyhull5.cc (1.5),
	  tests/polyhull6.cc (1.5), tests/polyhull7.cc (1.4),
	  tests/polyhull8.cc (1.5), tests/polyhull9.cc (1.6),
	  tests/ppl_test.hh (1.4), tests/print.cc (1.10), tests/print.hh
	  (1.14), tests/randphull1.cc (1.10), tests/randphull2.cc (1.6),
	  tests/relations1.cc (1.10), tests/relations10.cc (1.6),
	  tests/relations11.cc (1.6), tests/relations12.cc (1.5),
	  tests/relations13.cc (1.5), tests/relations14.cc (1.5),
	  tests/relations15.cc (1.5), tests/relations16.cc (1.5),
	  tests/relations17.cc (1.7), tests/relations18.cc (1.5),
	  tests/relations19.cc (1.6), tests/relations2.cc (1.11),
	  tests/relations3.cc (1.11), tests/relations4.cc (1.11),
	  tests/relations5.cc (1.11), tests/relations6.cc (1.10),
	  tests/relations7.cc (1.10), tests/relations8.cc (1.10),
	  tests/relations9.cc (1.12), tests/removedim1.cc (1.11),
	  tests/removedim10.cc (1.3), tests/removedim2.cc (1.15),
	  tests/removedim3.cc (1.11), tests/removedim4.cc (1.12),
	  tests/removedim5.cc (1.10), tests/removedim6.cc (1.13),
	  tests/removedim7.cc (1.9), tests/removedim8.cc (1.6),
	  tests/removedim9.cc (1.6), tests/smm1.cc (1.15),
	  tests/timeelapse1.cc (1.8), tests/timeelapse2.cc (1.8),
	  tests/timeelapse3.cc (1.8), tests/timeelapse4.cc (1.8),
	  tests/timeelapse5.cc (1.9), tests/timeelapse6.cc (1.4),
	  tests/timeelapse7.cc (1.4), tests/timeelapse8.cc (1.5),
	  tests/timings.cc (1.4), tests/timings.hh (1.4),
	  tests/topclosed1.cc (1.7), tests/topclosed2.cc (1.6),
	  tests/topclosed3.cc (1.8), tests/topclosure1.cc (1.7),
	  tests/topclosure2.cc (1.4), tests/topclosure3.cc (1.4),
	  tests/topclosure4.cc (1.6), tests/universe1.cc (1.10),
	  tests/universe2.cc (1.11), tests/universe3.cc (1.11),
	  tests/universe4.cc (1.11), tests/universe5.cc (1.12),
	  tests/universe6.cc (1.9), tests/watchdog1.cc (1.18),
	  tests/writeconsys1.cc (1.7), tests/writegensys1.cc (1.8),
	  tests/writegensys2.cc (1.8), tests/writegensys3.cc (1.7),
	  tests/writepolyhedron1.cc (1.7), tests/writepolyhedron2.cc (1.8),
	  tests/writepolyhedron3.cc (1.7), tests/writerelation1.cc (1.7),
	  tests/writevariable1.cc (1.9): Update copyright years.

2004-01-27 Tuesday 23:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/Makefile.am (1.3): Some little progress.

2004-01-27 Tuesday 23:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/: ppl_c.swg (1.2), ppl_ocaml_c.swg (1.1):
	  Renamed.

2004-01-27 Tuesday 17:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* compile (1.1), Watchdog/compile (1.1): Added from Automake 1.8.2.

2004-01-26 Monday 19:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/Makefile.am (1.2): Avoid running swig multiple
	  times.

2004-01-26 Monday 16:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.104), interfaces/Makefile.am (1.7),
	  interfaces/OCaml/.cvsignore (1.1), interfaces/OCaml/Makefile.am
	  (1.1): Directory `interfaces/OCaml' activated.

2004-01-26 Monday 16:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.23): It is no longer necessary to specify `-d
	  Validate' on the Doxygen's command line.

2004-01-26 Monday 09:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.94): Temporarily avoid splitting
	  preprocessor directives across multiple lines.  This is to get
	  around a bug in SWIG 1.3.21.

2004-01-26 Monday 08:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.93): Spacing fixed.

2004-01-25 Sunday 23:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/OCaml/ppl_c.swg (1.1): SWIG module declaration for the
	  OCaml interface to the C interface.

2004-01-25 Sunday 23:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.92): Explain to SWIG how to convert an
	  OCaml array to a C array plus length.

2004-01-25 Sunday 23:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.67): Avoid repeating the name of the target
	  file.

2004-01-25 Sunday 22:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* depcomp (1.6), install-sh (1.7), missing (1.7), mkinstalldirs
	  (1.6), Watchdog/depcomp (1.4), Watchdog/install-sh (1.4),
	  Watchdog/missing (1.3), Watchdog/mkinstalldirs (1.2): Update from
	  Automake.

2004-01-25 Sunday 22:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.103): Check for SWIG added.

2004-01-25 Sunday 22:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.21), config.sub (1.20), Watchdog/config.guess
	  (1.5), Watchdog/config.sub (1.5): Updated from config.

2004-01-25 Sunday 22:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.17), Watchdog/ltmain.sh (1.6): Updated from Libtool
	  1.5.2.

2004-01-23 Friday 21:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.221): Implement a new method to
	  differentiate between the inclusion of Ph_Status.idefs.hh and the
	  inclusion of all other header files.	This gets around a bug in
	  doxygen.

2004-01-23 Friday 14:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.220): Documentation for
	  Polyhedron::max_min() fixed.

2004-01-21 Wednesday 13:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/dualhypercubes.cc (1.2): Corrected an error and made
	  silent.

2004-01-20 Tuesday 08:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.189), dualhypercubes.cc (1.1): Put under
	  CVS control.

2003-12-19 Friday 14:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ppl_header.bottom (1.5), ppl_header.top (1.6): Include
	  <cassert> after restoring the status of NDEBUG: this should
	  finally solve the NDEBUG problem.

2003-12-17 Wednesday 15:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ppl_header.middle (1.3): GCC versions prior to 3.0 are no
	  longer supported.

2003-12-15 Monday 23:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.63): See if we can provide some guarantee on the maximum
	  number of times we are calling the methods of the argument of
	  Polyhedron::map_dimensions(const PartialFunction&).

2003-12-05 Friday 11:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.13): Do not use the ITIMER_PROF timer
	  when profiling.

2003-12-05 Friday 11:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.102): Define the symbol `PROFILING' when
	  profiling is enabled.

2003-12-04 Thursday 10:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.34),
	  devref-print.doxyconf-latex.in (1.34), devref.doxyconf-html.in
	  (1.35): The source files for the Status class are now called
	  Ph_Status.*.

2003-12-02 Tuesday 21:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/: lib-ld.m4 (1.2), lib-prefix.m4 (1.2): Updated from gettext
	  0.13.

2003-11-19 Wednesday 17:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.62): Remember to implement void
	  Polyhedron::envelope_assign(const Polyhedron& y).

2003-11-12 Wednesday 16:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.22), acinclude.m4 (1.6): Implement a much simpler
	  way of telling aclocal where to look for `.m4' files (in
	  addition, `sinclude', which we used in `acinclude.m4', is an
	  obsolete name for `m4_include').

2003-11-09 Sunday 00:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.33): Comment for compute_capacity() improved.
	  Added an alternative implementation (commented out) characterized
	  a speculation factor of 1.5.

2003-11-07 Friday 09:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.defs.hh (1.73): Including Integer.types.hh is not enough:
	  include Integer.defs.hh.

2003-11-04 Tuesday 17:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.20), config.sub (1.19), Watchdog/config.guess
	  (1.4), Watchdog/config.sub (1.4): Updated.

2003-10-30 Thursday 21:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Ph_Status.cc (1.3), Polyhedron_public.cc (1.15): OK()
	  methods must print their own error messages (unless NDEBUG is
	  defined).

2003-10-29 Wednesday 06:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/ac_check_gmp.m4 (1.15): In case libgmp and libgmpxx are
	  installed in the same location, allow to specify the prefix for
	  either one, the other being set automatically.

2003-10-29 Wednesday 06:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/: ac_cxx_attribute_weak.m4 (1.2), ac_cxx_flexible_arrays.m4
	  (1.7): Preserve CPPFLAGS.

2003-10-28 Tuesday 09:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.101), interfaces/C/Makefile.am (1.14),
	  interfaces/Prolog/Ciao/Makefile.am (1.21),
	  interfaces/Prolog/GNU/Makefile.am (1.31),
	  interfaces/Prolog/SICStus/Makefile.am (1.37),
	  interfaces/Prolog/SWI/Makefile.am (1.29),
	  interfaces/Prolog/XSB/Makefile.am (1.16),
	  interfaces/Prolog/YAP/Makefile.am (1.23), src/Makefile.am (1.66),
	  tests/Makefile.am (1.188): Got rid of extra_cpp_flags (was used
	  nowhere).

2003-10-27 Monday 22:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.8), NEWS (1.81), TODO (1.61), acinclude.m4 (1.5),
	  config.rpath (1.1), m4/ac_check_gmp.m4 (1.14), m4/lib-ld.m4
	  (1.1), m4/lib-link.m4 (1.1), m4/lib-prefix.m4 (1.1): Thanks to
	  Bruno Haible, it is now possible to use versions of the GMP
	  library installed into nonstandard places.

2003-10-27 Monday 10:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Ph_Status.idefs.hh (1.3), Ph_Status.inlines.hh (1.3): Some
	  useless code removed.

2003-10-27 Monday 09:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Ph_Status.cc (1.2), Ph_Status.idefs.hh (1.2),
	  Ph_Status.inlines.hh (1.2): Comments fixed.

2003-10-27 Monday 08:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.65), Ph_Status.cc (1.1), Ph_Status.idefs.hh
	  (1.1), Ph_Status.inlines.hh (1.1), Polyhedron.defs.hh (1.219),
	  Status.cc (1.22), Status.defs.hh (1.30), Status.inlines.hh
	  (1.15), Status.types.hh (1.7): The Status class is now a private
	  member of class Polyhedron.

2003-10-26 Sunday 18:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Status.defs.hh (1.29), Status.inlines.hh (1.14): Pass
	  objects of type Status by value.

2003-10-16 Thursday 17:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/polyhull1.cc (1.7): Debug message improved.

2003-10-13 Monday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.59): Comment fixed.

2003-10-06 Monday 19:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.60), tests/h79widening6.cc (1.4): h79widening6.cc
	  temporarily fixed, but must be turned into a proper test.

2003-10-04 Saturday 22:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.58): Revert previous change.

2003-10-04 Saturday 22:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.57): Avoid including <iostream>.

2003-10-03 Friday 12:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.7), Watchdog/.cvsignore (1.4): Ignore config.h.in.

2003-10-03 Friday 09:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.26), Watchdog/config.h.in (1.4): These should not
	  be in the repository, since they are automatically generated.

2003-09-23 Tuesday 10:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.33),
	  devref-print.doxyconf-latex.in (1.33), devref.doxyconf-html.in
	  (1.34), user-browse.doxyconf-latex.in (1.17),
	  user-print.doxyconf-latex.in (1.17), user.doxyconf-html.in
	  (1.19): Updated for Doxygen 1.3.4.

2003-09-10 Wednesday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.19), config.h.in (1.25), config.sub (1.18),
	  depcomp (1.5), install-sh (1.6), missing (1.6),
	  Watchdog/config.guess (1.3), Watchdog/config.sub (1.3),
	  Watchdog/depcomp (1.3), Watchdog/install-sh (1.3),
	  Watchdog/missing (1.2): Updated.

2003-09-10 Wednesday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Variable.cc (1.14), Variable.defs.hh (1.33): Pass variables
	  by const reference for uniformity.

2003-09-01 Monday 23:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.54):
	  PowerSet<CS>::check_omega_reduced() fixed: now it return false if
	  a bottom element is encountered (even in a singleton).

2003-09-01 Monday 23:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.53): Modified
	  PowerSet<CS>::omega_reduce() so that all bottom elements are
	  removed first.

2003-09-01 Monday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.24): Use Polyhedra_PowerSet<PH>::empty()
	  instead of Polyhedra_PowerSet<PH>::is_bottom().

2003-09-01 Monday 20:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.18): Useless using declarations
	  removed.

2003-09-01 Monday 20:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.45), PowerSet.inlines.hh (1.52): Method
	  bool PowerSet<CS>::empty() const added.  Useless using
	  declarations removed.  Added a bool argument to
	  PowerSet<CS>::OK() to decide whether bottom is or not allowed
	  into the powerset.

2003-09-01 Monday 10:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.17),
	  Polyhedra_PowerSet.inlines.hh (1.25): Methods
	  Polyhedra_PowerSet<PH>::add_constraint() and
	  Polyhedra_PowerSet<PH>::add_constraints() made lazy.	Methods
	  Polyhedra_PowerSet<PH>::add_constraint_and_minimize() and
	  Polyhedra_PowerSet<PH>::add_constraints_and_minimize() added.

2003-08-31 Sunday 23:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.51): Correct a mistake in previous
	  change.

2003-08-31 Sunday 23:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.50): PowerSet<CS>::collapse(iterator
	  sink) improved.

2003-08-30 Saturday 13:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bhz03widening2.cc (1.2): Be quiet.

2003-08-30 Saturday 12:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.24): Corrected a bug in
	  pairwise_reduce(), whereby we were marking the wrong polyhedra in
	  the sequence.  Corrected a bug in BHZ03_widening_assign(),
	  whereby we were calling BGP99_extrapolation_assign() instead of
	  BGP99_heuristics_assign (the latter does not pairwise-reduce nor
	  collapse the sequence of polyhedra).	In the implementation of
	  BGP99_heuristics_assign(), we now take a copy of polyhedron `pi'
	  before computing the base-level widening.

2003-08-30 Saturday 12:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.49): In function collapse(const
	  unsigned max_disjuncts), removed the never used iterators sbegin
	  and send.

2003-08-30 Saturday 00:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.187), bhz03widening2.cc (1.1): New test
	  for Polyhedra_Powerset<PH>::BHZ03_widening_assign().

2003-08-29 Friday 17:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.59): The name of the `abandon_exponential_computations'
	  variable is now misleading, as we use it also to abandon
	  polynomial computations in the PowerSet domains.

2003-08-29 Friday 17:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.44), PowerSet.inlines.hh (1.48): Method
	  PowerSet::collapse() added.  It provides the same functionality
	  as the project() function, which has been removed.

2003-08-29 Friday 17:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.16),
	  Polyhedra_PowerSet.inlines.hh (1.23), PowerSet.defs.hh (1.43),
	  PowerSet.inlines.hh (1.47): Method collapse() reimplemented
	  generically in the PowerSet class.  Methods
	  PowerSet<CS>::omega_reduce() and
	  Polyhedra_PowerSet<PH>::concatenate_assign() (which have
	  quadratic complexity) now test the
	  `abandon_exponential_computations' variable and hurry up (giving
	  up precision) if necessary.

2003-08-28 Thursday 10:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.23): Function check_containment() fixed and
	  silenced.

2003-08-27 Wednesday 23:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.22): Fixed a couple of bugs in
	  check_containment().	Print statements added to the same function
	  in order to help debugging it (it still does not work).

2003-08-27 Wednesday 23:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.15),
	  Polyhedra_PowerSet.inlines.hh (1.22): New methods `bool
	  semantically_contains(const Polyhedra_PowerSet&) const' and `bool
	  semantically_equals(const Polyhedra_PowerSet&) const'.  Fixed
	  methods ascii_dump() and ascii_load().

2003-08-27 Wednesday 18:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.14),
	  Polyhedra_PowerSet.inlines.hh (1.21): Methods `void
	  Polyhedra_PowerSet<PH>::ascii_dump(std::ostream&) const' and
	  `bool Polyhedra_PowerSet<PH>::ascii_load(std::istream&)' added.

2003-08-27 Wednesday 18:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.58), src/Init.cc (1.9): New mechanism to allow the user
	  to redefine the GMP memory allocation functions being 100% sure
	  that all GMP objects are allocated and deallocated by the same
	  functions (nasty things happen if this is not the case).

2003-08-27 Wednesday 18:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* acinclude.m4 (1.4), config.h.in (1.24), configure.ac (1.100),
	  m4/ac_cxx_attribute_weak.m4 (1.1): Check whether the C++ compiler
	  supports __attribute__ ((weak)).

2003-08-26 Tuesday 22:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.18), AskTell.inlines.hh (1.18),
	  Determinate.defs.hh (1.34), Determinate.inlines.hh (1.35),
	  Polyhedra_PowerSet.defs.hh (1.13), Polyhedra_PowerSet.inlines.hh
	  (1.20), PowerSet.defs.hh (1.42), PowerSet.inlines.hh (1.46):
	  Added the swap() method and the specialization of std::swap().

2003-08-26 Tuesday 14:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.21): Added a first version of the
	  "check_containment" algorithm described in Srivastava93.
	  Multiple inclusion guard added.

2003-08-26 Tuesday 08:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.12),
	  Polyhedra_PowerSet.inlines.hh (1.19): Added
	  Polyhedra_PowerSet<PH>::limited_BHZ03_widening_assign().

2003-08-26 Tuesday 08:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.18): TODO comment revised.
	  Variable declaration turned into a constant declaration.

2003-08-25 Monday 19:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bhz03widening1.cc (1.2): Ensure the widening is always
	  called properly.

2003-08-25 Monday 19:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.186), bhz03widening1.cc (1.1): Test
	  Polyhedra_Powerset<PH>::BHZ03_widening_assign().

2003-08-25 Monday 19:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.11),
	  Polyhedra_PowerSet.inlines.hh (1.17): Method
	  new_widening_assign() renamed BHZ03_widening_assign() and
	  modified to accept a widening method on the underlying polyhedra
	  domain.

2003-08-25 Monday 18:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.16): In BGP99 extrapolation,
	  do pairwise reduction before collapsing.

2003-08-25 Monday 18:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.10),
	  src/Polyhedra_PowerSet.inlines.hh (1.15), tests/Makefile.am
	  (1.185), tests/bgp99extrapolation1.cc (1.1),
	  tests/powersetwidening1.cc (1.8): Cleaned and simplified the code
	  for the "simple powerset widening", now more appropriately called
	  "BGP99 extrapolation".

2003-08-25 Monday 00:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.99): Version number bumped.

2003-08-25 Monday 00:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.16): Avoid two compiler warnings.

2003-08-24 Sunday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/powersetwidening1.cc (1.7): 20 iterations are enough.

2003-08-24 Sunday 17:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/powersetwidening1.cc (1.6): Corrected the affine image
	  transformation.  Made the test silent.

2003-08-24 Sunday 14:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.84), ppl_c.h (1.91): Revised interface
	  for ppl_Polyhedron_maximize() and ppl_Polyhedron_minimize().

2003-08-24 Sunday 14:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.218), src/Polyhedron.inlines.hh (1.85),
	  src/Polyhedron_nonpublic.cc (1.15), tests/max_min1.cc (1.3),
	  tests/max_min2.cc (1.3): Revised interface for
	  Polyhedron::maximize() and Polyhedron::minimize().

2003-08-24 Sunday 13:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.80): Section on bugfixes added for PPL 0.6.

2003-08-24 Sunday 13:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.79), src/LinExpression.cc (1.19),
	  src/LinExpression.defs.hh (1.61): New output operator in
	  namespace IO_Operators: std::ostream& operator<<(std::ostream&,
	  const LinExpression&).

2003-08-23 Saturday 22:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.14): The applicability test
	  asserted in Polyhedra_PowerSet<PH>::widening_assign() was
	  reversed: fixed.

2003-08-23 Saturday 18:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.83): Fixed indentation.

2003-08-23 Saturday 18:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/powersetwidening1.cc (1.5): Counter-example for the simple
	  powerset widening is now working as expected.

2003-08-23 Saturday 16:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/powersetwidening1.cc (1.4): Fixed an output statement.
	  Avoid computing S(n) multiple times.

2003-08-23 Saturday 16:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/powersetwidening1.cc (1.3): For readability, use an
	  alternate output function for variables.

2003-08-23 Saturday 16:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.13): In
	  Polyhedra_PowerSet<PH>::widening_assign(const Polyhedra_PowerSet&
	  y, ...) assert that `*this' definitely entails `y'.

2003-08-23 Saturday 16:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/powersetwidening1.cc (1.2): Started turning this program
	  into an implementation of Enea's counterexample for the simple
	  powerset widening.

2003-08-22 Friday 21:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: max_min1.cc (1.2), max_min2.cc (1.2): Be quiet.

2003-08-22 Friday 19:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.98): Version number bumped.

2003-08-22 Friday 19:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.78): Announce Polyhedron::maximize() and
	  Polyhedron::minimize().

2003-08-22 Friday 19:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.57): New things to do before releasing PPL 0.6.

2003-08-22 Friday 19:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.82), ppl_c.h (1.90): Added
	  ppl_Polyhedron_maximize() and ppl_Polyhedron_minimize().

2003-08-22 Friday 19:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.217): Documentation for
	  Polyhedron::maximize(const LinExpression&, ...) and
	  Polyhedron::minimize(const LinExpression&, ...) revised.

2003-08-22 Friday 18:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.184), max_min1.cc (1.1), max_min2.cc
	  (1.1): Test Polyhedron::maximize(const LinExpression&, ...) and
	  Polyhedron::minimize(const LinExpression&, ...).

2003-08-22 Friday 18:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.14): Method Polyhedron::max_min()
	  implemented.

2003-08-22 Friday 13:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.13): Avoid useless iterations in
	  Polyhedron::bounds().

2003-08-22 Friday 13:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.216), Polyhedron.inlines.hh (1.84),
	  Polyhedron_nonpublic.cc (1.12): Revised specification for the new
	  methods Polyhedron::maximize(const LinExpression&, ...) and
	  Polyhedron::minimize(const LinExpression&, ...).  Implementation
	  work started.

2003-08-22 Friday 12:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.cc (1.47): Avoid useless calls to std::ostream&
	  std::operator<<(std::ostream& s, ...).

2003-08-20 Wednesday 21:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.215): First tentative declaration for
	  the new maximization and minimization methods.

2003-08-20 Wednesday 16:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.56): We must explain very well that iterators can be
	  invalidated by several (actually, almost all) operations, and
	  that use of an invalidated iterator causes undefined behavior.

2003-08-20 Wednesday 16:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (ppl-0_5-branch.1): Fixed constructor
	  `PIFunc::PIFunc(dimension_type* v, size_t n)': it was not
	  initializing the `empty' member.  (Thanks to Axel Simon.)

2003-08-20 Wednesday 11:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.81): Fixed constructor
	  `PIFunc::PIFunc(dimension_type* v, size_t n)': it was not
	  initializing the `empty' member.  (Thanks to Axel Simon.)

2003-08-19 Tuesday 09:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.inlines.hh (1.12), PowerSet.defs.hh
	  (1.41), PowerSet.inlines.hh (1.45): Lazy, much more efficient
	  implementation of powersets.

2003-08-18 Monday 22:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.77), src/Variable.cc (1.13), src/Variable.defs.hh (1.32),
	  tests/writevariable1.cc (1.8): The type of output functions for
	  the class Variable, Variable::Output_Function_Type, is now
	  defined as void Output_Function_Type(std::ostream& s, const
	  Variable& v).  In other words, `v' is now passed by const
	  reference and not by value.

2003-08-10 Sunday 14:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.11): Removed the final
	  pairwise-reduction step from the 4th case of the new widening.

2003-08-10 Sunday 12:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.10): Added a new case to the
	  definition of the new widening for powerset polyhedra.

2003-08-08 Friday 16:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.9): Corrected the
	  implementation of the new widening so that we now check for `y'
	  not being a singleton before computing its multiset lgo
	  information.

2003-08-07 Thursday 12:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/powersetwidening1.cc (1.1): Put under CVS control.

2003-08-06 Wednesday 14:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.9),
	  src/Polyhedra_PowerSet.inlines.hh (1.8), src/Polyhedron.defs.hh
	  (1.214), src/Polyhedron.inlines.hh (1.83),
	  src/Polyhedron_widenings.cc (1.12), tests/Makefile.am (1.183):
	  Added a (rough) draft for the new widening on Polyhedra_PowerSet,
	  using the BHRZ03 widening and based on the lgo relation induced
	  by the BHRZ03 lgo.

2003-08-06 Wednesday 08:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.97), Watchdog/configure.ac (1.18): Allow for
	  `mild', -O1 optimization.

2003-08-04 Monday 16:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.8): Let the PPL compile.

2003-08-04 Monday 15:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.7),
	  Polyhedra_PowerSet.inlines.hh (1.7), PowerSet.defs.hh (1.40),
	  PowerSet.inlines.hh (1.44): Currect, greedy implementation of the
	  powerset construction and of its specialization on polyhedra.
	  (Will be replaced by a lazy implementation ASAP.)

2003-08-04 Monday 14:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.6),
	  Polyhedra_PowerSet.inlines.hh (1.6), Polyhedron.defs.hh (1.213),
	  Polyhedron.inlines.hh (1.82), Polyhedron_widenings.cc (1.11):
	  Drafted functions to compute multiset lgo for the powerset
	  domain.

2003-08-02 Saturday 17:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatRow.cc (1.21): Alternative implementation for
	  SatRow::next() added in a comment.

2003-07-30 Wednesday 22:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.18): Build an RPM package also for the PWL.  The
	  Prolog interfaces depend on the PWL.

2003-07-30 Wednesday 17:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: xsb_clpq.P (1.7), xsb_clpq2.P (1.5): XSB
	  version 2.6 still does not offer read_term/2.

2003-07-30 Wednesday 17:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.106), XSB/.cvsignore
	  (1.3), XSB/Makefile.am (1.15), XSB/ppl_xsb.cc (1.40): Removed
	  most of the kludges we had for supporting old versions of XSB.
	  We now only support XSB version 2.6 and following.

2003-07-28 Monday 08:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/fdl.dox (1.5), doc/gpl.dox (1.5),
	  interfaces/Prolog/Prolog_interface.dox (1.105): No longer using
	  Doxygen sectioning commands inside normal documentation blocks
	  (they only work inside \page and \mainpage blocks). Instead, now
	  using \anchor and unnumbered section headings.

2003-07-22 Tuesday 13:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.5): Ensure omega reductions
	  in the widening and extrapolation methods.

2003-07-22 Tuesday 13:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.43): PowerSet::is_top() now asserts
	  this->is_omega_reduced().

2003-07-21 Monday 22:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.defs.hh (1.5),
	  Polyhedra_PowerSet.inlines.hh (1.4): Limited extrapolation
	  operators added.

2003-07-20 Sunday 12:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.18), config.sub (1.17): Updated.

2003-07-18 Friday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.122): Citations fixed.

2003-07-18 Friday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.17), AskTell.inlines.hh (1.17): Entry
	  point for AskTell<CS>::H79_extrapolation_assign() added.

2003-07-18 Friday 22:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.20): poly_hull_assign_if_exact() improved.

2003-07-18 Friday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.inlines.hh (1.3):
	  Polyhedra_PowerSet<PH>::collapse() improved.

2003-07-16 Wednesday 15:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/h79widening7.cc (1.2): Make sure the outcome is as
	  expected.

2003-07-16 Wednesday 15:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/h79widening6.cc (1.3): Made silent.

2003-07-16 Wednesday 15:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc (1.63), Polyhedron_widenings.cc (1.10): Corrected
	  a bug in H79_widening_assign() and BHRZ03_combining_constraints()
	  whereby we could have created an illegal constraint system (the
	  bug was showing up when running the test h79widening6 with
	  assertions enabled).	Also added an assertion to the
	  corresponding constructor of Matrix.

2003-07-16 Wednesday 15:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.121): Updated.

2003-07-16 Wednesday 15:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.4): Comment fixed.

2003-07-16 Wednesday 09:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.182), h79widening7.cc (1.1):
	  h79widening7.cc shows there is a bug somewhere.

2003-07-15 Tuesday 22:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: h79widening6.cc (1.2), mc91.cc (1.13): Brought up-to-date
	  with respect to the rest of the library.

2003-07-15 Tuesday 22:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedra_PowerSet.defs.hh (1.3): Initial fix for the problem
	  concerning dependent names.

2003-07-15 Tuesday 11:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* configure.ac (1.96), m4/ac_check_gmp.m4 (1.13): Separated the
	  check for the existence of the GMP library from the check that it
	  has been compiled with the C++ interface enabled. Changed error
	  messages accordingly, to avoid the user getting confused.

2003-07-14 Monday 17:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.inlines.hh (1.34): Fixed two copy-and-paste
	  errors.

2003-07-14 Monday 17:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedra_PowerSet.inlines.hh (1.2), PowerSet.defs.hh
	  (1.39), PowerSet.inlines.hh (1.42): Lots of improvements and bug
	  fixes.

2003-07-14 Monday 17:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.inlines.hh (1.33): Exploit pointer equality to
	  optimize equality and containment tests.

2003-07-14 Monday 17:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.16), AskTell.inlines.hh (1.16): Several
	  improvements.

2003-07-13 Sunday 12:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.15), AskTell.inlines.hh (1.15),
	  Polyhedra_PowerSet.defs.hh (1.2): Fixed a few glitches.

2003-07-13 Sunday 11:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.19): Several functions moved (as methods) to
	  the Polyhedra_PowerSet class.

2003-07-13 Sunday 11:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.64), Polyhedra_PowerSet.defs.hh (1.1),
	  Polyhedra_PowerSet.inlines.hh (1.1), Polyhedra_PowerSet.types.hh
	  (1.1): The powerset construction instantiated on PPL polyhedra.

2003-07-13 Sunday 11:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.38), PowerSet.inlines.hh (1.41):
	  Rewritten so as to be truly generic.

2003-07-13 Sunday 11:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.14), AskTell.inlines.hh (1.14): Includes
	  fixed.  Comment added.

2003-07-10 Thursday 17:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.181), h79widening6.cc (1.1): Test the
	  simple powerset widening.

2003-07-10 Thursday 17:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.18): Includes fixed.  Simple powerset
	  widening reimplemented.

2003-07-10 Thursday 17:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_public.cc (1.14): Wrong call to
	  Polyhedron::throw_topology_incompatible() replaced with call to
	  Polyhedron::throw_dimension_incompatible().

2003-07-10 Thursday 17:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.63): Obsolete stuff out, AskTell class in.

2003-07-10 Thursday 17:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.33), Determinate.inlines.hh (1.32):
	  Big exception-safety bug fixed.  Some obsolete stuff removed.

2003-07-10 Thursday 17:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.37), PowerSet.inlines.hh (1.40),
	  PowerSet.types.hh (1.5): Several improvements.

2003-07-10 Thursday 17:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.13), AskTell.inlines.hh (1.13),
	  AskTell.types.hh (1.5), LCompare.defs.hh (1.6),
	  LCompare.inlines.hh (1.5), LCompare.types.hh (1.5): Started
	  reimplementing the AskTell class from scratch.

2003-07-10 Thursday 17:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.55): We must not forget to harmonize all the methods void
	  PPL::Polyhedron::throw_...(): now they build error messages
	  according to (confusingly) different styles.

2003-07-05 Saturday 17:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/mc91.cc (1.12): Call PowerSet:add_disjunct() instead of the
	  no longer existing PowerSet::inject().

2003-07-05 Saturday 17:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.12): Delete statement uncommented.

2003-07-05 Saturday 17:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.17): Added simple widening on powersets of
	  polyhedra.  They are based on the extrapolation operators but
	  enforce a maximum number of polyhedra in the destination
	  powerset.

2003-07-05 Saturday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.36), PowerSet.inlines.hh (1.39): Added
	  template <typename CS> void PowerSet<CS>::pop_back().

2003-07-01 Tuesday 15:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.35), PowerSet.inlines.hh (1.38),
	  algorithms.hh (1.16): PowerSet::inject() renamed
	  PowerSet::add_disjunct().

2003-07-01 Tuesday 15:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.12), AskTell.inlines.hh (1.12):
	  AskTell::inject() renamed AskTell::add_pair().

2003-07-01 Tuesday 09:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.inlines.hh (1.81), PowerSet.defs.hh (1.34):
	  Corrected minor typo.  Renamed PowerSet::add_disjunct as
	  PowerSet::inject.

2003-06-17 Tuesday 23:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh, Polyhedron_widenings.cc
	  (alt_lgo.[1,1]): Initial support for the "facing constraints"
	  technique, as provided by Pat.

2003-06-17 Tuesday 23:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.defs.hh (1.33): Comments revised.  Some cleaning.

2003-05-24 Saturday 21:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* install-sh (1.5): Updated.

2003-05-15 Thursday 07:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.54): Started drafting a list of enhancements for PPL 0.6.

2003-05-07 Wednesday 21:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/algorithms.hh (ppl-0_5-branch.1): Functon linear_partition()
	  excluded from the user manual version 0.5.

2003-05-07 Wednesday 21:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Determinate.defs.hh, PowerSet.defs.hh
	  (ppl-0_5-branch.[1,1]): Determinate and PowerSet template classes
	  excluded from the user manual of version 0.5.

2003-05-04 Sunday 19:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.10), doc/devref-browse.doxyconf-latex.in (1.32),
	  doc/devref-print.doxyconf-latex.in (1.32),
	  doc/devref.doxyconf-html.in (1.33), src/Determinate.defs.hh
	  (1.32), src/Determinate.inlines.hh (1.31), src/PowerSet.defs.hh
	  (1.32), src/PowerSet.inlines.hh (1.37): In the STANDARDS,
	  explained how the Doxygen documentation of a non-member method
	  has to be related to a templatic class.  Added or improved the
	  documentation of Determinate and PowerSet. Let these files be
	  included in the devref manual (they were already in the user
	  manual).

2003-05-01 Thursday 17:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/fdl.dox (ppl-0_5-branch.1): \ingroup replaced by \addtogroup,
	  since otherwise the documentation page is not included in the
	  produced manuals.

2003-05-01 Thursday 11:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/fdl.dox (1.4): \ingroup replaced by \addtogroup, since
	  otherwise the documentation page is not included in the produced
	  manuals.

2003-05-01 Thursday 11:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in,
	  devref-print.doxyconf-latex.in, devref.doxyconf-html.in
	  (ppl-0_5-branch.[1,1,1]): List CATCH_ALL in EXPAND_AS_DEFINED.
	  This is a temporary kludge to get around a bug in Doxygen whereby
	  occurrences of CATCH_ALL are otherwise interpreted as namespace
	  declarations.

2003-05-01 Thursday 10:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.31),
	  devref-print.doxyconf-latex.in (1.31), devref.doxyconf-html.in
	  (1.32): List CATCH_ALL in EXPAND_AS_DEFINED.	This is a temporary
	  kludge to get around a bug in Doxygen whereby occurrences of
	  CATCH_ALL are otherwise interpreted as namespace declarations.

2003-04-30 Wednesday 21:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.defs.hh (ppl-0_5-branch.1), Matrix.defs.hh (1.50):
	  Use \genfrac instead of \atop, since the latter causes problems
	  with the amsmath package.

2003-04-30 Wednesday 20:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (ppl-0_5-branch.1), Polyhedron.defs.hh
	  (1.212): Name the parameters of conversion() in a consistent way.

2003-04-30 Wednesday 19:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.95): Version number bumped.

2003-04-27 Sunday 21:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog, Watchdog/ChangeLog, Watchdog/NEWS, Watchdog/README,
	  Watchdog/configure.ac (ppl-0_5-branch.[2,2,1,1,1]): Synchronize
	  with the main trunk.

2003-04-27 Sunday 21:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_5-branch.1): Update version.

2003-04-27 Sunday 21:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog, ChangeLog (ppl-0_5-branch.[1,1]): Mark
	  ChangeLog.

2003-04-27 Sunday 21:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.16), Watchdog/ChangeLog (1.6): Updated.

2003-04-27 Sunday 21:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/configure.ac (1.17): Version number bumped.

2003-04-27 Sunday 21:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.15), Watchdog/ChangeLog (1.5): Updated.

2003-04-27 Sunday 21:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: ChangeLog (1.4), NEWS (1.3), README (1.5): Updated for
	  release 0.2.

2003-04-27 Sunday 21:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.53), ChangeLog (1.14): Updated.

2003-04-27 Sunday 20:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.13): Updated.

2003-04-27 Sunday 20:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.76): Reorganized.

2003-04-27 Sunday 16:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BoundingBox.cc (1.7), BoundingBox.defs.hh (1.10),
	  BoundingBox.inlines.hh (1.10), Polyhedron.inlines.hh (1.80):
	  Added Doxygen comments for class BoundingBox.  Method
	  Polyehdron::shrink_bounding_box() adapted to the lack of default
	  constructors for LBoundary and UBoundary.

2003-04-27 Sunday 16:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Interval.cc (1.8), Interval.defs.hh (1.15),
	  Interval.inlines.hh (1.10): Added Doxygen comments to classes
	  ERational, Boundary, LBoundary, UBoundary, Interval. Removed all
	  the comparison operators that are not currently used in the
	  sources. Removed the default constructors for LBoundary and
	  UBoundary.  Made explicit that the Interval class, as it is
	  defined, can only manipulate standard (i.e., non-extended)
	  rational intervals.

2003-04-27 Sunday 16:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.72): Added a scary comment to Row::assign(),
	  since its improper use may cause memory leaks.

2003-04-27 Sunday 16:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.211): In the documentation of
	  shrink_bounding_box, we now state that we will always call
	  raise_lower_bound and lower_upper_bound with fractions in
	  canonical form.

2003-04-27 Sunday 16:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.30),
	  devref-print.doxyconf-latex.in (1.30), devref.doxyconf-html.in
	  (1.31): Added files Interval.* and BoundingBox.* to the
	  documentation of the developers.

2003-04-27 Sunday 12:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/writevariable1.cc (1.7): Pass objects of type `Variable' by
	  value.

2003-04-27 Sunday 11:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: LinExpression.cc (1.18), LinExpression.defs.hh (1.60),
	  LinExpression.inlines.hh (1.28), Polyhedron.defs.hh (1.210),
	  Polyhedron_public.cc (1.13), Variable.cc (1.12), Variable.defs.hh
	  (1.31), Variable.inlines.hh (1.16): Be consistent: always pass
	  objects of type `Variable' by value.

2003-04-27 Sunday 11:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.cc (1.6), BoundingBox.inlines.hh (1.9),
	  ConSys.cc (1.66), ConSys.inlines.hh (1.30), Constraint.cc (1.39),
	  Constraint.inlines.hh (1.47), GenSys.cc (1.84), GenSys.inlines.hh
	  (1.31), Generator.cc (1.46), Generator.inlines.hh (1.41): Declare
	  variables `const' whenever possible or desirable.  Other little
	  improvements.

2003-04-27 Sunday 10:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (1.62): Fixed a typo in a comment.

2003-04-27 Sunday 09:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_widenings.cc (1.9): Avoid unnecessary explicit
	  initialization of vectors.

2003-04-27 Sunday 09:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_widenings.cc (1.8): Some debugging output removed.

2003-04-27 Sunday 08:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_widenings.cc (1.7): Declare variables `const'
	  whenever possible or desirable.

2003-04-26 Saturday 20:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_public.cc (1.12): Declare variables `const'
	  whenever possible or desirable.

2003-04-26 Saturday 19:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.11): Declare variables `const'
	  whenever possible or desirable.

2003-04-26 Saturday 19:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.16): Updated.

2003-04-26 Saturday 19:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.75): Tentative release date for PPL 0.5 is April 28,
	  2003.

2003-04-26 Saturday 15:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatMatrix.cc (1.27), SatMatrix.inlines.hh (1.20): Declare
	  variables `const' whenever possible or desirable.

2003-04-26 Saturday 15:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatRow.cc (1.20), SatRow.inlines.hh (1.27): Declare
	  variables `const' whenever possible or desirable.

2003-04-26 Saturday 14:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (1.61): Added comments to Matrix::sort_rows(first,
	  last).

2003-04-26 Saturday 14:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.74), TODO (1.52): Widening with tokens announced in the
	  NEWS file.

2003-04-26 Saturday 07:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.80), ppl_c.h (1.89): Stick to the C89
	  standard.

2003-04-26 Saturday 07:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.51): We must announce widening with tokens in the NEWS
	  file.

2003-04-25 Friday 21:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.15): Changes made elsewhere (removal of the
	  comparison operators over polyhedra and introduction of widenings
	  with tokens) now reflected here.

2003-04-25 Friday 21:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.50): All the functionalities are available in all
	  interfaces.  The documentation for Polyhedron::map_dimensions()
	  and its wrappers for all the interfaces is OK.

2003-04-24 Thursday 22:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.73), TODO (1.49), doc/definitions.dox (1.120),
	  interfaces/C/ppl_c.cc (1.79), interfaces/C/ppl_c.h (1.88),
	  interfaces/Prolog/Prolog_interface.dox (1.104),
	  interfaces/Prolog/pl_check.pl (1.66),
	  interfaces/Prolog/ppl_prolog.icc (1.115),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.57),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.38),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.52),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.76),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.25),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.39),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.70), src/Determinate.defs.hh
	  (1.31), src/Determinate.inlines.hh (1.30), src/Polyhedron.defs.hh
	  (1.209), src/Polyhedron.inlines.hh (1.79), src/PowerSet.defs.hh
	  (1.31), src/PowerSet.inlines.hh (1.36), tests/Makefile.am
	  (1.180), tests/mapdim1.cc (1.1), tests/remapdim1.cc (1.3): The
	  "remap_dimensions" operation is now called "map_dimensions".

2003-04-23 Wednesday 14:39  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.103), pl_check.pl
	  (1.65): Improved grammar specification for Prolog interface.
	  Amended remap test so that it does not refer to unused
	  (singleton) variable D.

2003-04-22 Tuesday 18:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: conversion.cc (1.50), minimize.cc (1.34), simplify.cc
	  (1.32): Declare variables `const' whenever possible or desirable.

2003-04-22 Tuesday 08:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron_chdims.cc (1.7), Polyhedron_nonpublic.cc (1.10),
	  Polyhedron_public.cc (1.11), Polyhedron_widenings.cc (1.6):
	  Consistently use `space_dim' instead of `space_dimension()' from
	  within the Polyhedron class.

2003-04-22 Tuesday 08:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.60), Matrix.inlines.hh (1.34), Row.cc (1.56),
	  Row.inlines.hh (1.41): Declare variables `const' whenever
	  possible or desirable.

2003-04-20 Sunday 11:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.87),
	  interfaces/Prolog/Prolog_interface.dox (1.102),
	  interfaces/Prolog/pl_check.pl (1.64),
	  interfaces/Prolog/ppl_prolog.icc (1.114), src/Polyhedron.defs.hh
	  (1.208), src/Polyhedron.inlines.hh (1.78), tests/remapdim1.cc
	  (1.2): Changed the documentation of the remapping operator to
	  refer to the specification provided in doc/definitions.dox;
	  changed the tests to avoid experimenting with cases when the
	  behavior is undefined; no longer insisting that the partial
	  function is injective (since this is required but it is not
	  enough to obtain a well-defined behavior).

2003-04-19 Saturday 10:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.179), remapdim1.cc (1.1), renamedim1.cc
	  (1.3): Test program renamedim1.cc renamed remapdim1.cc.

2003-04-18 Friday 21:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.119), doc/devref-browse.doxyconf-latex.in
	  (1.29), doc/devref-print.doxyconf-latex.in (1.29),
	  doc/devref.doxyconf-html.in (1.30),
	  doc/user-browse.doxyconf-latex.in (1.16),
	  doc/user-print.doxyconf-latex.in (1.16),
	  doc/user.doxyconf-html.in (1.18), interfaces/C/ppl_c.cc (1.78),
	  interfaces/C/ppl_c.h (1.86),
	  interfaces/Prolog/Prolog_interface.dox (1.101),
	  interfaces/Prolog/pl_check.pl (1.63),
	  interfaces/Prolog/Ciao/ciao_clpq.pl (1.7),
	  interfaces/Prolog/Ciao/ppl_ciao.cc (1.19),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.56),
	  interfaces/Prolog/GNU/Makefile.am (1.30),
	  interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.13),
	  interfaces/Prolog/SICStus/Makefile.am (1.36),
	  interfaces/Prolog/SICStus/sicstus_cfli.ic (1.6),
	  interfaces/Prolog/SWI/Makefile.am (1.28),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.75),
	  interfaces/Prolog/XSB/Makefile.am (1.14),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.38),
	  interfaces/Prolog/YAP/Makefile.am (1.22),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.69), m4/Makefile.am (1.9),
	  m4/ac_check_gmp.m4 (1.12), m4/ac_cxx_flexible_arrays.m4 (1.6),
	  src/ConSys.cc (1.65), src/GenSys.cc (1.83), src/GenSys.defs.hh
	  (1.92), src/Generator.defs.hh (1.84), src/Matrix.cc (1.59),
	  src/Matrix.defs.hh (1.49), src/NNC_Polyhedron.defs.hh (1.22),
	  src/Poly_Con_Relation.defs.hh (1.22), src/Polyhedron.defs.hh
	  (1.207), src/Polyhedron.inlines.hh (1.77),
	  src/Polyhedron_chdims.cc (1.6), src/Polyhedron_nonpublic.cc
	  (1.9), src/Polyhedron_public.cc (1.10),
	  src/Polyhedron_widenings.cc (1.5), src/PowerSet.inlines.hh
	  (1.35), src/Row.cc (1.55), src/Row.defs.hh (1.71),
	  src/SatMatrix.cc (1.26), src/SatMatrix.defs.hh (1.32),
	  src/SatRow.cc (1.19), src/SatRow.defs.hh (1.31), src/Status.cc
	  (1.21), src/conversion.cc (1.49), src/minimize.cc (1.33),
	  src/simplify.cc (1.31): Trailing blanks removed.

2003-04-18 Friday 19:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.72), TODO (1.48), interfaces/C/ppl_c.cc (1.77),
	  interfaces/C/ppl_c.h (1.85),
	  interfaces/Prolog/Prolog_interface.dox (1.100),
	  interfaces/Prolog/pl_check.pl (1.62),
	  interfaces/Prolog/ppl_prolog.icc (1.113),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.55),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.37),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.51),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.74),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.24),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.37),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.68), src/Determinate.defs.hh
	  (1.30), src/Determinate.inlines.hh (1.29), src/Polyhedron.defs.hh
	  (1.206), src/Polyhedron.inlines.hh (1.76), src/PowerSet.defs.hh
	  (1.30), src/PowerSet.inlines.hh (1.34), tests/renamedim1.cc
	  (1.2): The "rename_dimensions" operation is now called
	  "remap_dimensions".

2003-04-18 Friday 19:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.118): Section about "Remapping the
	  Dimension of the Vector Space" rewritten.

2003-04-18 Friday 19:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/ppl.sty (1.12): New macro \pard[3] to typeset the signature
	  of a partial function.

2003-04-17 Thursday 22:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.117), src/ConSys.cc (1.64),
	  src/Matrix.defs.hh (1.48), src/Polyhedron_nonpublic.cc (1.8):
	  Prefer "zeroes" to "zeros".

2003-04-17 Thursday 22:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.112): The Boundary_Kind enum
	  is now confined into the anonymous namespace.

2003-04-17 Thursday 22:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.11), interfaces/Prolog/ppl_prolog.icc
	  (1.111): Prefer anonymous namespaces to static declarations.

2003-04-17 Thursday 22:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.110),
	  src/BoundingBox.inlines.hh (1.8), src/Interval.cc (1.7),
	  src/Interval.defs.hh (1.14), src/Interval.inlines.hh (1.9),
	  src/Interval.types.hh (1.6), src/Polyhedron.inlines.hh (1.75):
	  Class `ExtendedRational' renamed `ERational'.

2003-04-17 Thursday 19:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.47), src/Matrix.defs.hh (1.47), src/Matrix.inlines.hh
	  (1.33): Fixed the comments of the following methods of Matrix:
	  void grow(dimension_type new_n_rows, dimension_type
	  new_n_columns); void resize_no_copy(dimension_type new_n_rows,
	  void add_rows_and_columns(dimension_type n).

2003-04-17 Thursday 19:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.94): Version number bumped.

2003-04-17 Thursday 19:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/Makefile.am (1.21): Target `check-local'
	  fixed.

2003-04-17 Thursday 19:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.20): Remove ciao_clpq and
	  ciao_clpq2 when cleaning.

2003-04-17 Thursday 19:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.29): Remove check_script3
	  when cleaning.

2003-04-17 Thursday 07:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/Makefile.am (1.20): Distribute also
	  yap_pl_check.pl.

2003-04-17 Thursday 07:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.28): Distribute also
	  gnu_pl_check.pl.

2003-04-16 Wednesday 07:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.99): Small corrections
	  made.

2003-04-16 Wednesday 05:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Makefile.am (1.23): Distribute expected3.

2003-04-15 Tuesday 21:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Makefile.am (1.22): Distribute also
	  pl_check.pl.

2003-04-15 Tuesday 19:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.71), TODO (1.46), interfaces/C/ppl_c.cc (1.76),
	  interfaces/C/ppl_c.h (1.84),
	  interfaces/Prolog/Prolog_interface.dox (1.98),
	  interfaces/Prolog/pl_check.pl (1.61),
	  interfaces/Prolog/ppl_prolog.icc (1.109),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.54),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.36),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.50),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.73),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.23),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.36),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.67), src/C_Polyhedron.cc
	  (1.6), src/Determinate.inlines.hh (1.28), src/Polyhedron.defs.hh
	  (1.205), src/Polyhedron.inlines.hh (1.74),
	  src/Polyhedron_public.cc (1.9), tests/bounded1.cc (1.12),
	  tests/disjoint1.cc (1.6), tests/disjoint2.cc (1.7),
	  tests/disjoint3.cc (1.6), tests/empty1.cc (1.13),
	  tests/intersection2.cc (1.9), tests/linearpartition1.cc (1.12),
	  tests/linearpartition2.cc (1.12), tests/linearpartition3.cc
	  (1.12), tests/randphull1.cc (1.9), tests/smm1.cc (1.14),
	  tests/timeelapse5.cc (1.8), tests/topclosed1.cc (1.6),
	  tests/topclosed2.cc (1.5), tests/topclosed3.cc (1.7),
	  tests/universe1.cc (1.9), tests/universe2.cc (1.10),
	  tests/universe3.cc (1.10), tests/universe4.cc (1.10),
	  tests/universe5.cc (1.11), tests/universe6.cc (1.8): The methods
	  Polyhedron::check_empty() and Polyhedron::check_universe() have
	  been renamed is_empty() and is_universe(), respectively.  The
	  function check_disjoint(const Polyhedron&, const Polyhedron&) had
	  been replaced by method Polyhedron::is_disjoint_from(const
	  Polyhedron&).  The methods Polyhedron::check_bounded() and
	  Polyhedron::check_topologically_closed() have been renamed
	  is_bounded() and is_topologically_closed(), respectively.

2003-04-15 Tuesday 19:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.19): Distribute also
	  ciao_clpq2.pl.

2003-04-15 Tuesday 13:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.204), Polyhedron.inlines.hh (1.73),
	  Polyhedron_chdims.cc (1.5), Polyhedron_nonpublic.cc (1.7),
	  Polyhedron_public.cc (1.8), Polyhedron_widenings.cc (1.4):
	  Polyhedron::is_empty() renamed Polyhedron::marked_empty().

2003-04-15 Tuesday 13:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.16), Watchdog/ltmain.sh (1.5): Updated.

2003-04-15 Tuesday 09:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.70), interfaces/C/ppl_c.cc (1.75),
	  interfaces/Prolog/ppl_prolog.icc (1.108), src/ConSys.defs.hh
	  (1.79), src/GenSys.defs.hh (1.91), src/Generator.defs.hh (1.83),
	  src/Polyhedron.defs.hh (1.203), src/Polyhedron.inlines.hh (1.72),
	  src/Polyhedron_public.cc (1.7), src/Polyhedron_widenings.cc
	  (1.3), tests/Makefile.am (1.178), tests/NNCinclusion1.cc (1.7),
	  tests/contains1.cc (1.4), tests/contains2.cc (1.1),
	  tests/contains3.cc (1.1), tests/contains4.cc (1.1),
	  tests/contains5.cc (1.1), tests/exceptions1.cc (1.34),
	  tests/exceptions2.cc (1.28), tests/inclusion1.cc (1.7),
	  tests/inclusion2.cc (1.4), tests/linearpartition1.cc (1.11),
	  tests/linearpartition2.cc (1.11), tests/linearpartition3.cc
	  (1.11), tests/operator1.cc (1.5): The functions
	  Polyhedron::operator<=(const Polyhedron&, const Polyhedron&),
	  Polyhedron::operator>=(const Polyhedron&, const Polyhedron&),
	  Polyhedron::operator<(const Polyhedron&, const Polyhedron&), and
	  Polyhedron::operator>(const Polyhedron&, const Polyhedron&) have
	  been removed.  The methods Polyhedron::contains(const
	  Polyhedron&) and Polyhedron::strictly_contains(const Polyhedron&)
	  provide the same functionality.

2003-04-14 Monday 16:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.202), Polyhedron_nonpublic.cc (1.6),
	  Polyhedron_public.cc (1.6): Polyhedron::is_included(const
	  Polyhedron&) renamed Polyhedron::is_included_in(const
	  Polyhedron&).

2003-04-14 Monday 12:24  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.60), Ciao/ppl_ciao.pl (1.53):
	  The ciao system now allows for
	  ppl_Polyhedron_generalized_affine_image to fail.  This is now
	  tested in pl_check.

2003-04-14 Monday 11:39  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.59), Ciao/ppl_ciao.pl (1.52):
	  This allows for failure in ciao for timeout_exception_atom when
	  the atom given does not unify with the current value and also for
	  the new_Polyhedron predicates when unifying the new handle with
	  the input value.  In order to test this, the tests in pl_check
	  assume that unifying a new handle with value 0 will fail.

2003-04-13 Sunday 21:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/expected2 (1.8): Adapted to strong
	  normalization.

2003-04-13 Sunday 13:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.63), GenSys.cc (1.82), Matrix.cc (1.58),
	  Matrix.defs.hh (1.46), Row.cc (1.54), Row.defs.hh (1.70),
	  simplify.cc (1.30): Added a boolean parameter to Matrix::OK() to
	  control whether or not we also want to check for strong
	  normalization of the rows in the matrix.  Strong normalization is
	  now checked when this might be useful, i.e., avoiding bare
	  repetitions of the same check.  Also added a method
	  Row::check_strongly_normalized() with the obvious semantics.

2003-04-13 Sunday 09:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.18): Do not use the
	  GLOBALSTKSIZE kludge for testing with clpq2.pl.

2003-04-13 Sunday 09:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.51): Indentation fixed.

2003-04-12 Saturday 20:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/expected2 (1.10): Updated according to the
	  enforcing of strong-normalization.

2003-04-12 Saturday 20:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/simplify.cc (1.29): Method Polyhedron::simplify(mat, sat)
	  takes as 1st input argument a well-formed Matrix mat.  When a
	  ray-point-inequality is transformed into a line-equality,
	  sign_normalization is applied to enforce strong-normalization.
	  Well-formedness of mat also asserted on exit.

2003-04-12 Saturday 20:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (1.57): Methods Matrix::gauss() and
	  Matrix::back_substitute() are applied to well-formed matrices and
	  will return well-formed matrices.  Corrected a bug in the
	  handling of the sortedness flag in back_substitute().  Method
	  Matrix::OK() now also checks strong normalization of rows.

2003-04-12 Saturday 20:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Row.cc (1.53), Row.defs.hh (1.69), Row.inlines.hh (1.40):
	  Strong normalization of rows made inline and implemented by
	  calling Row::normalize() and Row::sign_normalize().

2003-04-11 Friday 08:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.62), GenSys.cc (1.81): Fixed a couple of
	  comments.

2003-04-11 Friday 08:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.15), Watchdog/ltmain.sh (1.4): Updated.

2003-04-11 Friday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.61), Constraint.cc (1.38),
	  Constraint.inlines.hh (1.46), GenSys.cc (1.80), Generator.cc
	  (1.45), Matrix.cc (1.56), Matrix.inlines.hh (1.32), Row.cc
	  (1.52), Row.defs.hh (1.68), conversion.cc (1.48), simplify.cc
	  (1.28): Commit to EXTRA_NORMALIZATION=1.

2003-04-10 Thursday 14:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.60), GenSys.cc (1.79), Polyhedron_widenings.cc
	  (1.2), conversion.cc (1.47): Strong normalization of rows called
	  when EXTRA_NORMALIZATION is set; otherwise use (simple)
	  normalization.

2003-04-10 Thursday 12:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.59), GenSys.cc (1.78), Matrix.defs.hh (1.45),
	  Matrix.inlines.hh (1.31), Polyhedron_chdims.cc (1.4): Added
	  method Matrix::remove_columns(dimension_type new_n_columns) with
	  the expected semantics. The method ensures that the resulting
	  matrix is in normal form, thus correcting the bug shown by
	  removedim10.cc.  The new method is now used everywhere we remove
	  columns from a matrix.

2003-04-10 Thursday 11:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/removedim10.cc (1.2): Corrected the known result.

2003-04-10 Thursday 10:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.177), removedim10.cc (1.1): New test
	  showing a bug whereby rows of matrices are not re-normalized
	  after the removal of some columns.

2003-04-10 Thursday 10:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/removedim9.cc (1.5): Indentation fixed.

2003-04-09 Wednesday 09:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.9): Improved the section about the production of
	  Doxygen documentation.

2003-04-09 Wednesday 09:02  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.58): Changed the way variables
	  are bound to dimension names.  This avoids a problem due to a bug
	  in XSB.

2003-04-08 Tuesday 19:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.45): For the moment, it is convenient to have
	  Matrix::set_sorted(bool value) instead of, say,
	  Matrix::set_sorted() and Matrix::set_unsorted().  Sortedness will
	  have to be dealt with at a more fundamental level anyway.

2003-04-08 Tuesday 19:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.lsm.in (1.4): Updated.

2003-04-08 Tuesday 19:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.44): Section on "Constructions on Polyhedra" revised.
	  Minor fix in the section about "Cutting-Plane Methods".

2003-04-08 Tuesday 19:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.43): Remove the section about designing and
	  implementating strict weak orderings on polyhedra.

2003-04-08 Tuesday 19:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.15): Updated.

2003-04-08 Tuesday 18:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* INSTALL (1.5): Copyright symbol added.

2003-04-08 Tuesday 18:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.12): Updated.

2003-04-08 Tuesday 18:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.7): Minor correction.

2003-04-08 Tuesday 18:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.97): Information on how
	  to use the XSB interface added.

2003-04-08 Tuesday 16:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/SatMatrix.defs.hh (1.31): Added short Doxygen description and
	  improved the long one for SatMatrix.

2003-04-08 Tuesday 13:11  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.49): Added missing
	  definitions for
	  ppl_Polyhedron_limited_H79_extrapolation_assign_with_token and
	  ppl_Polyhedron_bounded_H79_extrapolation_assign_with_token.

2003-04-08 Tuesday 13:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.322): Implementation file Polyhedron.cc has
	  been split in 4 chunks: - Polyhedron_widenings.cc contains the
	  definitions of (non-inline) functions   related to widening and
	  extrapolation operators; - Polyhedron_chdims.cc contains the
	  definitions of (non-inline) functions   that change the space
	  dimensions; - Polyhedron_public.cc contains the definitions of
	  all the other public	 (non-inline) functions -
	  Polyhedron_nonpublic.cc contains the definitions of all the other
	  non-public (i.e., private or protected) (non-inline) functions.

2003-04-08 Tuesday 13:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron_chdims.cc (1.3), Polyhedron_nonpublic.cc (1.5),
	  Row.defs.hh (1.67), statistics.hh (1.2): Added Doxygen
	  documentation for a few #define's.

2003-04-08 Tuesday 10:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.57), Ciao/ppl_ciao.pl (1.50):
	  Added code and test to allow for Prolog failure in the
	  ppl_Polyhedron_generalized_affine_image_lhs_rhs/4 predicate.

2003-04-08 Tuesday 09:39  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.56): Added tests for Prolog
	  failure for the "with_token" predicates.  Some reorganisation of
	  the widening/extrapolation tests.

2003-04-08 Tuesday 09:26  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.49): Modified the
	  "with_token" predicates to allow for Prolog failure.

2003-04-08 Tuesday 08:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.29), PowerSet.inlines.hh (1.33): Added
	  \relates command for functions working on class template
	  PowerSet.

2003-04-08 Tuesday 08:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.66): Improved the detailed Doxygen description
	  of class Row.

2003-04-08 Tuesday 08:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Determinate.defs.hh (1.29), Determinate.inlines.hh (1.27):
	  Added a few \relates commands, which however show a bug in the
	  handling of template specializations by Doxygen.

2003-04-08 Tuesday 08:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.cc (1.17): Added missing \relates Doxygen
	  commands.

2003-04-07 Monday 16:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.14), Watchdog/ltmain.sh (1.3): Updated.

2003-04-07 Monday 08:11  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.48): The local definition
	  of many of the ppl predicates changed to allow for Prolog
	  failure.  Some missing predicates added.

2003-04-07 Monday 08:03  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.55): Tests have been improved
	  and extended to check negation and Prolog failure.  Some
	  reorganisation done.

2003-04-07 Monday 07:59  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.35):
	  ppl_Polyhedron_limited_H79_extrapolation_assign_with_token was
	  missing - is now added.

2003-04-06 Sunday 18:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.84), Constraint.inlines.hh (1.45),
	  Generator.defs.hh (1.82), Generator.inlines.hh (1.40),
	  LinExpression.defs.hh (1.59), LinExpression.inlines.hh (1.27),
	  Polyhedron_public.cc (1.5): Adding a few missing \relates Doxygen
	  commands.  Avoid adding Doxygen blocks near to *friend*
	  declarations: comment the very function declarations instead.

2003-04-06 Sunday 18:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Poly_Con_Relation.defs.hh (1.21),
	  Poly_Con_Relation.inlines.hh (1.10), Poly_Gen_Relation.defs.hh
	  (1.20), Poly_Gen_Relation.inlines.hh (1.10), SatRow.inlines.hh
	  (1.26), Status.defs.hh (1.28), Status.inlines.hh (1.13): Adding a
	  few missing \relates Doxygen commands.  Avoid adding Doxygen
	  blocks near to *friend* declarations: comment the very function
	  declarations instead.

2003-04-06 Sunday 18:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/SatRow.defs.hh (1.30): Removed declared but unimplemented
	  member function unsigned int size().

2003-04-06 Sunday 12:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.65): Upgraded the detailed documentation of
	  class Row to also describe the representation of NNC row objects.

2003-04-05 Saturday 09:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Status.defs.hh (1.27): Modified class documentation to also
	  consider the flags about pending constraints and generators.
	  Moved Doxygen comments from friend declaration to the real
	  function declaration. Avoid using preproc flag PPL_DOXYGEN_HYDE_
	  IMPLEMENTATION_DETAILS when useless, i.e., when we are inside a
	  class whose documentation is already hidden.

2003-04-05 Saturday 09:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc (1.55), Matrix.defs.hh (1.44): Adjusted a couple
	  of Doxygen and code comments.

2003-04-01 Tuesday 12:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.93): Fixed a bug whereby building of the SICStus
	  Prolog interface was attempted even if deemed to fail because the
	  sicstus.h include could not be found.

2003-04-01 Tuesday 12:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron_public.cc (1.4), SatRow.cc (1.18): Added four
	  \relates Doxygen commands to correctly match declaration and
	  definition of functions in the devref manual.

2003-03-31 Monday 10:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.83): Missing inline qualification added.

2003-03-31 Monday 10:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.13): Updated.

2003-03-28 Friday 10:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* configure.ac (1.92): When checking for the presence of source
	  files, avoid testing for `Polyhedron.cc', who is going to be
	  removed from the repository.

2003-03-27 Thursday 14:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.42): New items to be checked.

2003-03-27 Thursday 14:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.54): Comments of Matrix::operator=(const Matrix&
	  y) made more precise.

2003-03-27 Thursday 14:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.inlines.hh (1.39): Indentation of preprocessing
	  directives fixed.

2003-03-27 Thursday 14:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.51): Row::Impl::copy_construct() slightly improved.

2003-03-27 Thursday 14:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.inlines.hh (1.30): Spacing adjusted.

2003-03-25 Tuesday 18:00  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.96), pl_check.pl
	  (1.54): The documentation for the relations_with predicates
	  corrected.  The tests for the relations_with predicates improved.

2003-03-25 Tuesday 11:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.71): Inline functions should be
	  *defined* before they are used.

2003-03-19 Wednesday 09:49  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.53): All tests now test both c
	  and nnc polyhedra.  Some more checks on the interface
	  incorporated into these tests.

2003-03-19 Wednesday 08:02  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/permute.cc (1.30): Avoid unnecessary calls to
	  append_size_rel.

2003-03-19 Wednesday 07:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/permute.cc (1.29): Bug fixed

2003-03-18 Tuesday 15:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/SatRow.defs.hh (1.29): Added Doxygen comment to class SatRow.
	  Avoiding commenting friend declarations.

2003-03-18 Tuesday 15:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.64): Added doxygen comment to class Row::Impl.

2003-03-18 Tuesday 12:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.28),
	  devref-print.doxyconf-latex.in (1.28), devref.doxyconf-html.in
	  (1.29): Added input file version.hh.

2003-03-18 Tuesday 11:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.inlines.hh (1.44), Row.cc (1.50), Row.defs.hh
	  (1.63), Row.inlines.hh (1.38), SatMatrix.defs.hh (1.30),
	  SatMatrix.inlines.hh (1.19), SatRow.defs.hh (1.28),
	  SatRow.inlines.hh (1.25): As suggested in our STANDARDS file, let
	  all Doxygen comments be centralized before methods declarations
	  in file *.defs.hh.  In class Row, be careful to use the same
	  parameter naming in declarations and definitions.  For Row and
	  SatRow, let std::iter_swap be declared in *.defs.hh.

2003-03-18 Tuesday 11:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.107), Ciao/ppl_ciao.pl
	  (1.47): Be more general with respect to different ways of raising
	  Prolog exceptions in C code.

2003-03-18 Tuesday 10:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.95): Bug in comment for
	  ppl_Polyhedron_OK fixed.

2003-03-18 Tuesday 10:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.34): Repeated declaration
	  removed.

2003-03-18 Tuesday 08:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.94): Bug fixed in
	  documentation of ppl_Polyhedron_OK.

2003-03-18 Tuesday 08:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.33): Bug fixed.

2003-03-18 Tuesday 08:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.93), pl_check.pl
	  (1.52), ppl_prolog.icc (1.106), Ciao/ppl_ciao.pl (1.46),
	  GNU/ppl_gprolog.pl (1.35), SICStus/ppl_sicstus_sd.cc (1.48),
	  SWI/ppl_swiprolog.cc (1.72), XSB/ppl_xsb.H (1.22), XSB/ppl_xsb.cc
	  (1.32), YAP/ppl_yap.cc (1.66): The "with_token" predicates added
	  for the extrapolation operators.  The ppl_Polyhedron_OK predicate
	  added.  The documentation predicates reorganised to match the
	  standard ordering.  Tests added for the new predicates.

2003-03-17 Monday 09:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.82): Comments fixed.

2003-03-17 Monday 09:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.51): Many improvements and extra
	  tests added.

2003-03-16 Sunday 22:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.105): Default arguments are
	  only permitted on functions.

2003-03-16 Sunday 22:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.104): Prefer anonymous
	  namespaces to static linkage.

2003-03-16 Sunday 14:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.inlines.hh (1.70), Polyhedron_chdims.cc (1.2),
	  Polyhedron_nonpublic.cc (1.4), Polyhedron_public.cc (1.3): A few
	  harmless FIXME's replaced by TODO.

2003-03-16 Sunday 10:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron_public.cc (1.2): In affine_image(), added a
	  comment explaining why in one case we can leave work correctly
	  with a DD pair having pending rows.

2003-03-16 Sunday 10:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron_nonpublic.cc (1.3): Preferred unset_pending_rows()
	  wrt set_index_first_pending_row().

2003-03-16 Sunday 10:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/simplify.cc (1.27): Preferring unset_pending_rows() wrt
	  set_index_first_pending_row().

2003-03-16 Sunday 10:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.46): Dealt with a FIXME. Preferring the use
	  of unset_pending_rows() wrt the use of set_index_first_pending(),
	  since the first is more intuitive.

2003-03-16 Sunday 10:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.77): Dealt with the CHECK ME in
	  remove_invalid_rays_and_lines().

2003-03-16 Sunday 10:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (1.58): Added a needed comment.

2003-03-15 Saturday 17:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.103): Some code duplication
	  avoided.

2003-03-15 Saturday 13:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.78), GenSys.defs.hh (1.90): Corrected
	  typos in comments.

2003-03-15 Saturday 13:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.69): Small corrections in
	  rename_dimensions().

2003-03-15 Saturday 13:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/: ppl_c.h (1.81), ppl_c.cc (1.74): Added the
	  equality test for polyhedra to the C interface.

2003-03-14 Friday 21:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in (1.27),
	  doc/devref-print.doxyconf-latex.in (1.27),
	  doc/devref.doxyconf-html.in (1.28), interfaces/C/ppl_c.h (1.80),
	  interfaces/Prolog/Prolog_interface.dox (1.92),
	  interfaces/Prolog/ppl_prolog.icc (1.102),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.45),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.34),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.47),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.71),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.21),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.31),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.65), src/Polyhedron.defs.hh
	  (1.201), src/Polyhedron.inlines.hh (1.68),
	  src/Polyhedron_nonpublic.cc (1.2): Reordered the functions and
	  their documentation in all the interfaces to follow the
	  reorganization done in Polyhedron.defs.hh.  Adjusted Doxygen
	  configuration files for the devref manuals to get their input
	  from the new .cc files of class Polyhedron.

2003-03-14 Friday 13:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.69), TODO (1.41), interfaces/C/ppl_c.cc (1.73),
	  interfaces/C/ppl_c.h (1.79),
	  interfaces/Prolog/Prolog_interface.dox (1.91),
	  interfaces/Prolog/pl_check.pl (1.50),
	  interfaces/Prolog/ppl_prolog.icc (1.101),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.44),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.33),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.46),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.70),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.20),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.30),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.64): Interfaces changed to
	  match method name changes (check_bound, check_topolo- giaclly
	  close and check_disjoint). Change reported in the NEWS.

2003-03-14 Friday 13:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bounded1.cc (1.11), disjoint1.cc (1.5), disjoint2.cc
	  (1.6), disjoint3.cc (1.5), linearpartition1.cc (1.10),
	  linearpartition2.cc (1.10), linearpartition3.cc (1.10),
	  topclosed1.cc (1.5), topclosed2.cc (1.4), topclosed3.cc (1.6):
	  Tests changed according to method renaming.

2003-03-14 Friday 13:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.cc (1.5), Makefile.am (1.62), Polyhedron.cc
	  (1.321), Polyhedron.defs.hh (1.200), Polyhedron.inlines.hh
	  (1.67), Polyhedron_chdims.cc (1.1), Polyhedron_nonpublic.cc
	  (1.1), Polyhedron_public.cc (1.1), Polyhedron_widenings.cc (1.1):
	  Split file Polyhedron.cc into several files.	Methods
	  is_bounded(), is_topologically_closed() and are_disjoint()
	  renamed to check_bounded(), check_topologically_closed() and
	  check_disjoint().  Documentation reorganized to match more
	  closely the order in the introduction of the user manual, also
	  grouping related methods.  Added exception thrower
	  throw_runtime_error().  In the documentation, all examples using
	  class `Polyhedron' changed to use the user-accessible class
	  `C_Polyhedron'.

2003-03-14 Friday 12:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.defs.hh (1.43), Poly_Con_Relation.defs.hh (1.20),
	  Poly_Gen_Relation.defs.hh (1.19), Row.defs.hh (1.62),
	  SatRow.defs.hh (1.27), Status.defs.hh (1.26): In Doxygen
	  documentation, replaced `@name' by `\name'.

2003-03-14 Friday 09:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Ciao/Makefile.am (1.17): Corrected for clpq2.pl
	  checks

2003-03-13 Thursday 17:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/: Makefile.am (1.27), gnu_pl_check.pl
	  (1.1): Test all predicates with GNU Prolog.

2003-03-13 Thursday 08:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/yap_pl_check.pl (1.2): Comment corrected.

2003-03-13 Thursday 08:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/Makefile.am (1.19): Dependencies fixed.

2003-03-12 Wednesday 19:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.116): Another attempt at specifying the
	  space-dimensions remapping operator.

2003-03-12 Wednesday 19:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: expected3 (1.1), YAP/Makefile.am (1.18),
	  YAP/yap_pl_check.pl (1.1): A first attempt at integrating
	  `pl_check.pl' into the regression testing mechanism.

2003-03-12 Wednesday 19:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: user-browse.doxyconf-latex.in (1.15),
	  user-print.doxyconf-latex.in (1.15), user.doxyconf-html.in
	  (1.17): Hide the listing of friend compounds in the user
	  documentation.

2003-03-12 Wednesday 16:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.49): Removed the "and_minimize"
	  from the code for the "checks" predicate.

2003-03-12 Wednesday 13:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.320): Corrected a bug in
	  Polyhedron::add_genrators() whereby a generator system was
	  wrongly declared sorted after the inclusion of pending rows.

2003-03-12 Wednesday 10:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/GNU/ppl_gprolog.pl (1.32): Added missing
	  definitions and corrected a bug.

2003-03-12 Wednesday 08:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.176), addgenerators13.cc (1.1): New test
	  exhibiting a bug triggered by an invocation to
	  Polyhedron::add_generators()..

2003-03-12 Wednesday 08:29  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.48): In many cases, predicates
	  that are intended to cause Prolog failure in certain specified
	  situations now tested more thoroughly.  Unnecessary uses of
	  "and_minimize" removed.  Other general improvements.

2003-03-11 Tuesday 20:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.90): Mention that we
	  support only YAP version 4.4 or later and Ciao Prolog 1.9 #44 or
	  later.

2003-03-11 Tuesday 19:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.100): Now all the
	  *_and_minimize/2 predicates fail if the resulting polyhedron is
	  empty.

2003-03-11 Tuesday 17:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.99): Indentation fixed.

2003-03-11 Tuesday 15:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.47), ppl_prolog.icc (1.98),
	  Ciao/ppl_ciao.pl (1.43), GNU/ppl_gprolog.pl (1.31),
	  SICStus/ppl_sicstus_sd.cc (1.45), SWI/ppl_swiprolog.cc (1.69),
	  XSB/ppl_xsb.H (1.19), XSB/ppl_xsb.cc (1.29), YAP/ppl_yap.cc
	  (1.63): The "..with_tokens" predicates are now "..with_token".
	  The predicate ppl_Polyhedron_bounded_H79_extrapolation_assign/3
	  added to Ciao, GNU, SICStus, XSB, and Yap.

2003-03-11 Tuesday 13:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: ciao_clpq.pl (1.6), ciao_clpq2.pl (1.2):
	  Import as few predicates as possible.

2003-03-11 Tuesday 13:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.42): Complete declarations
	  for ppl_Polyhedron_H79_widening_assign_with_tokens/3.

2003-03-11 Tuesday 11:12  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.46), Ciao/ppl_ciao.pl (1.41),
	  GNU/ppl_gprolog.pl (1.30), SICStus/ppl_sicstus_sd.cc (1.44),
	  SWI/ppl_swiprolog.cc (1.68), XSB/ppl_xsb.H (1.18), XSB/ppl_xsb.cc
	  (1.28), YAP/ppl_yap.cc (1.62): Tests for new interface predicates
	  added.

2003-03-11 Tuesday 10:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.97): Translate std::bad_alloc
	  into a usable Prolog exception.

2003-03-11 Tuesday 10:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.96):
	  PIFunc::max_in_codomain() fixed.

2003-03-11 Tuesday 09:26  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.89): Descriptions of
	  "with_token" predicates improved.

2003-03-10 Monday 19:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: Makefile.am (1.16), ciao_clpq.pl (1.5),
	  ciao_clpq2.pl (1.1), ppl_ciao.cc (1.18), ppl_ciao.pl (1.40): Ciao
	  Prolog interface fixed and now part of the regression testing
	  mechanism.

2003-03-10 Monday 19:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.68): The Prolog interface now supports also Ciao Prolog
	  and XSB.

2003-03-10 Monday 18:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.115): First attempt at describing the
	  operator remapping dimensions.

2003-03-10 Monday 12:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.114): Changed a bit the description about
	  widenings to better clarify what has been done and we are still
	  doing for NNC polyhedra.

2003-03-10 Monday 11:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.72), ppl_c.h (1.78): Modified the C
	  interface to support the widening-with-tokens technique for all
	  widening and extrapolation operators.

2003-03-10 Monday 10:59  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.88): Descriptions for
	  the bounded_..._extrapolation_assign predicates corrected.

2003-03-10 Monday 10:30  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.87): Added
	  documentation for the with_token versions of the widening
	  predicates and for the bounded versions of the extrapolation
	  predicates.

2003-03-10 Monday 09:27  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.86): Prolog interface
	  documentation reorganised with a summary list of all predicates.

2003-03-09 Sunday 22:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.95): Started factorizing the
	  implementation of the Prolog interface using pointers to members.

2003-03-09 Sunday 21:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.94), Ciao/ppl_ciao.pl
	  (1.39), GNU/ppl_gprolog.pl (1.29), SICStus/ppl_sicstus_sd.cc
	  (1.43), SWI/ppl_swiprolog.cc (1.67), XSB/ppl_xsb.H (1.17),
	  XSB/ppl_xsb.cc (1.27), YAP/ppl_yap.cc (1.61): New predicate
	  ppl_Polyhedron_bounded_BHRZ03_extrapolation_assign/3.

2003-03-09 Sunday 21:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.93), Ciao/ppl_ciao.pl
	  (1.38), GNU/ppl_gprolog.pl (1.28), SICStus/ppl_sicstus_sd.cc
	  (1.42), SWI/ppl_swiprolog.cc (1.66), XSB/ppl_xsb.H (1.16),
	  XSB/ppl_xsb.cc (1.26), YAP/ppl_yap.cc (1.60): New predicate
	  ppl_Polyhedron_BHRZ03_widening_assign_with_tokens/3.

2003-03-09 Sunday 21:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.71), ppl_c.h (1.77): New function
	  ppl_Polyhedron_BHRZ03_widening_assign_with_tokens().	Some
	  hyperlinks added.

2003-03-09 Sunday 20:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.23): Updated.

2003-03-09 Sunday 20:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.91): Check whether the C compiler supports the
	  `inline' keyword.

2003-03-09 Sunday 19:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.40), src/Interval.defs.hh (1.13): The Interval class has
	  been documented.

2003-03-09 Sunday 19:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.199): Polyhedron::OK() only prints
	  something if run-time assertions are enabled.

2003-03-09 Sunday 11:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.39), src/Polyhedron.types.hh (1.9): Explained PPL's I/O
	  operators and how to deal with the IO_Operators namespace.

2003-03-09 Sunday 08:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.38): It should now be clear how to build the
	  documentation.

2003-03-09 Sunday 08:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.90): Version number bumped.

2003-03-09 Sunday 08:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/adddimensions13.cc (1.2): Comments improved.

2003-03-09 Sunday 08:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.53): Explain the necessity of the guard against
	  auto-assignments in Matrix::operator=(const Matrix&).

2003-03-08 Saturday 22:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (1.52): Corrected Matrix::operator= to avoid the
	  bug shown by tests adddimensions13.

2003-03-08 Saturday 22:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.175), adddimensions13.cc (1.1): Added test
	  showing a bug in teh assignment operator of Matrix. Bug is only
	  visible when configuring with --enable-more-assertions.

2003-03-08 Saturday 22:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.113): Removed wrong capitalization.

2003-03-08 Saturday 21:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.tex (1.11), user.tex (1.12): Apparently, CoVer is a
	  MURST project.

2003-03-08 Saturday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.70), ppl_c.h (1.76): New functions
	  ppl_add_LinExpression_to_LinExpression(),
	  ppl_subtract_LinExpression_from_LinExpression() and
	  ppl_multiply_LinExpression_by_Coefficient().

2003-03-08 Saturday 21:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Variable.defs.hh (1.30): Variable::Compare commented.

2003-03-08 Saturday 21:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.6), TODO (1.37): CREDITS updated.

2003-03-08 Saturday 11:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/README (1.1): Explain how to get (more) PPL documentation.

2003-03-08 Saturday 09:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.69), ppl_c.h (1.75): Typos fixed.

2003-03-08 Saturday 09:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: adddimensions9.cc (1.6), affineimage8.cc (1.7),
	  affinepreimage10.cc (1.7), bounded1.cc (1.10), concatenate2.cc
	  (1.7), disjoint1.cc (1.4), exceptions1.cc (1.33), exceptions2.cc
	  (1.27), intersection10.cc (1.5), removedim7.cc (1.8): Typos
	  fixed.

2003-03-08 Saturday 09:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.83), GenSys.cc (1.76), Polyhedron.cc
	  (1.319), Polyhedron.defs.hh (1.198), Polyhedron.inlines.hh
	  (1.66), SatRow.defs.hh (1.26), Status.cc (1.20), conversion.cc
	  (1.45), minimize.cc (1.32), simplify.cc (1.26): Typos fixed.

2003-03-07 Friday 19:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.32), exceptions2.cc (1.26),
	  generalizedaffineimage1.cc (1.7), generalizedaffineimage10.cc
	  (1.6), generalizedaffineimage11.cc (1.5),
	  generalizedaffineimage12.cc (1.4), generalizedaffineimage2.cc
	  (1.6), generalizedaffineimage3.cc (1.7),
	  generalizedaffineimage4.cc (1.5), generalizedaffineimage5.cc
	  (1.5), generalizedaffineimage6.cc (1.5),
	  generalizedaffineimage7.cc (1.7), generalizedaffineimage8.cc
	  (1.5), generalizedaffineimage9.cc (1.5): Reflect the changes to
	  the enumerate Relation_Symbol.

2003-03-07 Friday 19:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.68), ppl_c.h (1.74): New functions
	  ppl_LinExpression_coefficient() and
	  ppl_LinExpression_inhomogeneous_term().

2003-03-07 Friday 17:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.73): Reorganized the C interface
	  documentation using Doxygen member grouping and trying to use
	  brief comments when possible.

2003-03-07 Friday 15:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.61): Old stuff removed.

2003-03-07 Friday 15:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.67), doc/definitions.dox (1.112), doc/ppl.sty (1.11),
	  interfaces/C/ppl_c.cc (1.67), interfaces/C/ppl_c.h (1.72),
	  interfaces/Prolog/Prolog_interface.dox (1.85),
	  interfaces/Prolog/ppl_prolog.icc (1.92), src/Constraint.defs.hh
	  (1.82), src/LinExpression.defs.hh (1.58), src/Polyhedron.cc
	  (1.318), src/Polyhedron.defs.hh (1.197), src/globals.hh (1.32):
	  We now speak of "relation symbols", not of "relation operators"
	  or "relational operators".

2003-03-07 Friday 14:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.111),
	  interfaces/Prolog/Prolog_interface.dox (1.84): The discussion
	  about eager methods moved from the prolog interface to the
	  introduction (just before the bibliography).

2003-03-07 Friday 11:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.66), TODO (1.36), interfaces/C/ppl_c.cc (1.66),
	  interfaces/C/ppl_c.h (1.71),
	  interfaces/Prolog/Prolog_interface.dox (1.83),
	  interfaces/Prolog/pl_check.pl (1.45),
	  interfaces/Prolog/ppl_prolog.icc (1.91),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.37),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.27),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.41),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.65),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.15),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.25),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.59), src/Determinate.defs.hh
	  (1.28), src/Determinate.inlines.hh (1.26), src/Polyhedron.defs.hh
	  (1.196), src/Polyhedron.inlines.hh (1.65), src/PowerSet.defs.hh
	  (1.28), src/PowerSet.inlines.hh (1.32), tests/Makefile.am
	  (1.174), tests/renamedim1.cc (1.1), tests/shuffledim1.cc (1.11):
	  We rename dimensions, we do not shuffle them.

2003-03-07 Friday 11:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.110), devref-browse.doxyconf-latex.in
	  (1.26), devref-print.doxyconf-latex.in (1.26),
	  devref.doxyconf-html.in (1.27), user-browse.doxyconf-latex.in
	  (1.14), user-print.doxyconf-latex.in (1.14),
	  user.doxyconf-html.in (1.16): Updated Doxygen configuration files
	  to version 1.3-rc3-20030223.	Small typo fixed in
	  definitions.dox.

2003-03-07 Friday 11:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.90): Predicate
	  ppl_Polyhedron_shuffle_dimensions/2 now fails when given a
	  non-injective function.

2003-03-07 Friday 09:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: CbecomesNNC1.cc (1.4), NNCinclusion1.cc (1.6),
	  NNCminimize1.cc (1.9), NNCminimize2.cc (1.9), NNCminimize3.cc
	  (1.9), NNCminimize4.cc (1.11), NNCminimize5.cc (1.8),
	  NNCminimize6.cc (1.10), addconstraint1.cc (1.4),
	  addconstraint2.cc (1.3), addconstraint3.cc (1.3),
	  addconstraints1.cc (1.10), addconstraints10.cc (1.9),
	  addconstraints11.cc (1.10), addconstraints12.cc (1.3),
	  addconstraints13.cc (1.5), addconstraints2.cc (1.18),
	  addconstraints3.cc (1.8), addconstraints4.cc (1.10),
	  addconstraints5.cc (1.11), addconstraints6.cc (1.12),
	  addconstraints7.cc (1.11), addconstraints8.cc (1.11),
	  addconstraints9.cc (1.12), adddimensions1.cc (1.13),
	  adddimensions10.cc (1.6), adddimensions11.cc (1.4),
	  adddimensions12.cc (1.3), adddimensions2.cc (1.9),
	  adddimensions3.cc (1.11), adddimensions4.cc (1.9),
	  adddimensions5.cc (1.7), adddimensions6.cc (1.7),
	  adddimensions7.cc (1.7), adddimensions8.cc (1.5),
	  adddimensions9.cc (1.5), addgenerator1.cc (1.4), addgenerator2.cc
	  (1.4), addgenerator3.cc (1.3), addgenerator4.cc (1.4),
	  addgenerators1.cc (1.11), addgenerators10.cc (1.3),
	  addgenerators11.cc (1.5), addgenerators12.cc (1.5),
	  addgenerators2.cc (1.11), addgenerators3.cc (1.11),
	  addgenerators4.cc (1.11), addgenerators5.cc (1.11),
	  addgenerators6.cc (1.11), addgenerators7.cc (1.8),
	  addgenerators8.cc (1.6), addgenerators9.cc (1.5), affineimage1.cc
	  (1.11), affineimage2.cc (1.10), affineimage3.cc (1.3),
	  affineimage4.cc (1.3), affineimage5.cc (1.4), affineimage6.cc
	  (1.3), affineimage7.cc (1.3), affineimage8.cc (1.6),
	  affinepreimage1.cc (1.10), affinepreimage10.cc (1.6),
	  affinepreimage2.cc (1.10), affinepreimage3.cc (1.10),
	  affinepreimage4.cc (1.11), affinepreimage5.cc (1.3),
	  affinepreimage6.cc (1.4), affinepreimage7.cc (1.3),
	  affinepreimage8.cc (1.3), affinepreimage9.cc (1.4),
	  affinetrans.cc (1.13), append1.cc (1.21), append2.cc (1.21),
	  ascii_dump_load1.cc (1.12), ascii_dump_load2.cc (1.10),
	  ascii_dump_load3.cc (1.13), ascii_dump_load4.cc (1.13),
	  ascii_dump_load5.cc (1.9), ascii_dump_load6.cc (1.6),
	  ascii_dump_load7.cc (1.6), bhrz03widening1.cc (1.3),
	  bhrz03widening10.cc (1.3), bhrz03widening11.cc (1.3),
	  bhrz03widening12.cc (1.3), bhrz03widening13.cc (1.3),
	  bhrz03widening14.cc (1.3), bhrz03widening15.cc (1.5),
	  bhrz03widening16.cc (1.3), bhrz03widening17.cc (1.3),
	  bhrz03widening18.cc (1.3), bhrz03widening19.cc (1.3),
	  bhrz03widening2.cc (1.5), bhrz03widening3.cc (1.5),
	  bhrz03widening4.cc (1.3), bhrz03widening5.cc (1.3),
	  bhrz03widening6.cc (1.4), bhrz03widening7.cc (1.4),
	  bhrz03widening8.cc (1.3), bhrz03widening9.cc (1.5), bounded1.cc
	  (1.9), boundingbox1.cc (1.32), boundingbox2.cc (1.17),
	  boundingbox3.cc (1.8), boundingbox4.cc (1.5), bounds1.cc (1.5),
	  bounds2.cc (1.5), concatenate1.cc (1.7), concatenate2.cc (1.6),
	  concatenate3.cc (1.6), concatenate4.cc (1.5), concatenate5.cc
	  (1.3), concatenate6.cc (1.5), constraints1.cc (1.5),
	  constraints2.cc (1.5), constraints3.cc (1.5), constraints4.cc
	  (1.5), contains1.cc (1.3), disjoint1.cc (1.3), disjoint2.cc
	  (1.5), disjoint3.cc (1.4), ehandlers.hh (1.7), empty1.cc (1.12),
	  exceptions1.cc (1.31), exceptions2.cc (1.25),
	  generalizedaffineimage1.cc (1.6), generalizedaffineimage10.cc
	  (1.5), generalizedaffineimage11.cc (1.4),
	  generalizedaffineimage12.cc (1.3), generalizedaffineimage2.cc
	  (1.5), generalizedaffineimage3.cc (1.6),
	  generalizedaffineimage4.cc (1.4), generalizedaffineimage5.cc
	  (1.4), generalizedaffineimage6.cc (1.4),
	  generalizedaffineimage7.cc (1.6), generalizedaffineimage8.cc
	  (1.4), generalizedaffineimage9.cc (1.4), generators1.cc (1.12),
	  generators2.cc (1.8), generators3.cc (1.4), generators4.cc (1.4),
	  generators5.cc (1.4), generators6.cc (1.5), h79widening1.cc
	  (1.5), h79widening2.cc (1.6), h79widening3.cc (1.6),
	  h79widening4.cc (1.3), h79widening5.cc (1.4), inclusion1.cc
	  (1.6), inclusion2.cc (1.3), intersection1.cc (1.5),
	  intersection10.cc (1.4), intersection11.cc (1.5),
	  intersection2.cc (1.8), intersection3.cc (1.6), intersection4.cc
	  (1.6), intersection5.cc (1.6), intersection6.cc (1.6),
	  intersection7.cc (1.5), intersection8.cc (1.4), intersection9.cc
	  (1.4), limitedbhrz03extrapolation1.cc (1.2),
	  limitedh79extrapolation1.cc (1.2), limitedh79extrapolation2.cc
	  (1.2), limitedh79extrapolation3.cc (1.2),
	  limitedh79extrapolation4.cc (1.2), linearpartition1.cc (1.9),
	  linearpartition2.cc (1.9), linearpartition3.cc (1.9),
	  linexpression1.cc (1.3), mc91.cc (1.11), memory1.cc (1.19),
	  minconstraints1.cc (1.4), minconstraints2.cc (1.4),
	  minconstraints3.cc (1.3), minconstraints4.cc (1.7),
	  mingenerators1.cc (1.4), mingenerators2.cc (1.3),
	  mingenerators3.cc (1.3), onepoint.cc (1.9), operator1.cc (1.4),
	  permute.cc (1.28), polydifference1.cc (1.6), polydifference2.cc
	  (1.8), polydifference3.cc (1.3), polydifference4.cc (1.4),
	  polydifference5.cc (1.5), polydifference6.cc (1.5),
	  polydifference7.cc (1.4), polyhull1.cc (1.6), polyhull10.cc
	  (1.3), polyhull2.cc (1.6), polyhull3.cc (1.6), polyhull4.cc
	  (1.5), polyhull5.cc (1.4), polyhull6.cc (1.4), polyhull7.cc
	  (1.3), polyhull8.cc (1.4), polyhull9.cc (1.5), randphull1.cc
	  (1.8), randphull2.cc (1.5), relations1.cc (1.9), relations10.cc
	  (1.5), relations11.cc (1.5), relations12.cc (1.4), relations13.cc
	  (1.4), relations14.cc (1.4), relations15.cc (1.4), relations16.cc
	  (1.4), relations17.cc (1.6), relations18.cc (1.4), relations19.cc
	  (1.5), relations2.cc (1.10), relations3.cc (1.10), relations4.cc
	  (1.10), relations5.cc (1.10), relations6.cc (1.9), relations7.cc
	  (1.9), relations8.cc (1.9), relations9.cc (1.11), removedim1.cc
	  (1.10), removedim2.cc (1.14), removedim3.cc (1.10), removedim4.cc
	  (1.11), removedim5.cc (1.9), removedim6.cc (1.12), removedim7.cc
	  (1.7), removedim8.cc (1.5), removedim9.cc (1.4), shuffledim1.cc
	  (1.10), smm1.cc (1.13), timeelapse1.cc (1.7), timeelapse2.cc
	  (1.7), timeelapse3.cc (1.7), timeelapse4.cc (1.7), timeelapse5.cc
	  (1.7), timeelapse6.cc (1.3), timeelapse7.cc (1.3), timeelapse8.cc
	  (1.4), topclosed1.cc (1.4), topclosed2.cc (1.3), topclosed3.cc
	  (1.5), topclosure1.cc (1.6), topclosure2.cc (1.3), topclosure3.cc
	  (1.3), topclosure4.cc (1.5), universe1.cc (1.8), universe2.cc
	  (1.9), universe3.cc (1.9), universe4.cc (1.9), universe5.cc
	  (1.10), universe6.cc (1.7), watchdog1.cc (1.17), writeconsys1.cc
	  (1.6), writegensys1.cc (1.7), writegensys2.cc (1.7),
	  writegensys3.cc (1.6), writepolyhedron1.cc (1.6),
	  writepolyhedron2.cc (1.7), writepolyhedron3.cc (1.6),
	  writerelation1.cc (1.6), writevariable1.cc (1.6): Treatment of
	  exceptions harmonized.  Some stylistic improvements.

2003-03-07 Friday 09:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.82), pl_check.pl
	  (1.44): Added documentation and tests for the new Prolog
	  interface predicates ppl_Polyhedron_generalized_affine_image/5
	  and ppl_Polyhedron_generalized_affine_image_lhs_rhs/4.

2003-03-06 Thursday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: append1.cc (1.20), permute.cc (1.27), shuffledim1.cc
	  (1.9): Return 1 on failure.

2003-03-06 Thursday 21:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.70): Avoid using `//' comments, since
	  they are not in C89.	Let the multiple inclusion guard be
	  external to everything.

2003-03-06 Thursday 21:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.89), Ciao/ppl_ciao.pl
	  (1.36), GNU/ppl_gprolog.pl (1.26), SICStus/ppl_sicstus_sd.cc
	  (1.40), SWI/ppl_swiprolog.cc (1.64), XSB/ppl_xsb.H (1.14),
	  XSB/ppl_xsb.cc (1.24), YAP/ppl_yap.cc (1.58): New predicates
	  ppl_Polyhedron_generalized_affine_image/5 and
	  ppl_Polyhedron_generalized_affine_image_lhs_rhs/4.

2003-03-06 Thursday 15:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/version.hh.in (1.4): Specify that the beta number is zero for
	  official releases and nonzero for development snapshots.

2003-03-06 Thursday 12:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.81): Improved
	  discussion about *_and_minimize predicates.

2003-03-06 Thursday 11:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/version.hh.in (1.3): Small correction of module heading.

2003-03-06 Thursday 11:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.109), doc/fdl.dox (1.3), doc/gpl.dox
	  (1.4), interfaces/C/ppl_c.h (1.69),
	  interfaces/Prolog/Prolog_interface.dox (1.80): Let the licence
	  pages and the documentation of foreign language interfaces be
	  grouped into ``modules'', so as to avoid spreading information in
	  too many places of the user manual. We no longer have a ``PPL
	  pages'' index.

2003-03-06 Thursday 09:43  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.43): Updated the predicate
	  testing the PPL watchdog predicates to use ppl_Polyhedron_swap/2.

2003-03-06 Thursday 09:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.79), pl_check.pl
	  (1.42): Added the ppl_Polyhedron_time_elapse_assign/2 to the
	  Prolog documentation and to the tests in pl_check.pl.

2003-03-05 Wednesday 23:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/version.hh.in (1.2): Library defines with version info put
	  inside a \defgroup block to have them appear in the user
	  documentation.

2003-03-05 Wednesday 18:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: append1.cc (1.19), append2.cc (1.20), concatenate1.cc
	  (1.6), permute.cc (1.26): Do not use the obsolete
	  operator>>(const Constraint&, unsigned int).

2003-03-05 Wednesday 18:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.88), Ciao/ppl_ciao.pl
	  (1.35), GNU/ppl_gprolog.pl (1.25), SICStus/ppl_sicstus_sd.cc
	  (1.39), SWI/ppl_swiprolog.cc (1.63), XSB/ppl_xsb.H (1.13),
	  XSB/ppl_xsb.cc (1.23), YAP/ppl_yap.cc (1.57): New predicate
	  ppl_Polyhedron_time_elapse_assign/2.

2003-03-05 Wednesday 17:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.64), tests/shuffledim1.cc (1.8):
	  Corrected implementation of shuffle_dimensions() and the known
	  result in the last test of shuffledim1.

2003-03-05 Wednesday 16:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.317): Avoid useless abbreviations.

2003-03-05 Wednesday 15:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.41): Call to polydiff_assign_min
	  removed from check_all.

2003-03-05 Wednesday 15:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.78), pl_check.pl
	  (1.40): Added ppl_Polyhedron_swap/2.	Shuffle_Map syntax added
	  and ppl_Polyhedron_shuffle_dimensions/2 documentation header
	  added.

2003-03-05 Wednesday 14:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.65), interfaces/C/ppl_c.cc (1.65), interfaces/C/ppl_c.h
	  (1.68), interfaces/Prolog/Prolog_interface.dox (1.77),
	  interfaces/Prolog/pl_check.pl (1.39),
	  interfaces/Prolog/ppl_prolog.icc (1.87),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.34),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.24),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.38),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.62),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.12),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.22),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.56), src/Polyhedron.cc
	  (1.316), src/Polyhedron.defs.hh (1.195), tests/polydifference6.cc
	  (1.4): The method
	  Polyhedron::poly_difference_assign_and_minimize(const
	  Polyhedron&) has been removed.

2003-03-05 Wednesday 14:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.86), Ciao/ppl_ciao.pl
	  (1.33), GNU/ppl_gprolog.pl (1.23), SICStus/ppl_sicstus_sd.cc
	  (1.37), SWI/ppl_swiprolog.cc (1.61), XSB/ppl_xsb.H (1.11),
	  XSB/ppl_xsb.cc (1.21), YAP/ppl_yap.cc (1.55): New predicate
	  ppl_Polyhedron_swap/2.

2003-03-05 Wednesday 14:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.315), Polyhedron.defs.hh (1.194): The
	  (dis-)equality boolean functions operator== and operator!= on
	  objects of the class Polyhedron no longer require topological-
	  and dimension-consistency. Inconsistent objects are not
	  equivalent.

2003-03-05 Wednesday 14:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.64), configure.ac (1.89), src/Makefile.am (1.60),
	  src/version.cc (1.1), src/version.hh.in (1.1): New macros
	  PPL_VERSION_MAJOR, PPL_VERSION_MINOR, PPL_VERSION_REVISION, and
	  PPL_VERSION_BETA allow the client application to adapt to
	  different versions of the library.

	  New function const char* version() returns a character string
	  containing the PPL version.

	  New function const char* banner() returns a character string
	  containing information about the PPL version, the licensing, the
	  lack of any warranty whatsoever, the C++ compiler used to build
	  the library, where to report bugs and where to look for further
	  information.

2003-03-05 Wednesday 14:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.63): News item concerning the new
	  Polyhedron::generalized_affine_image() operators revised.

2003-03-05 Wednesday 10:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/shuffledim1.cc (1.7): Added a test showing a bug in
	  Polyhedron::shuffle_dimensions().

2003-03-05 Wednesday 10:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.62): Improved the synthetic description of methods
	  generalized_affine_image().

2003-03-04 Tuesday 22:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.88): Require GMP version 4.1.2 or following.

2003-03-04 Tuesday 18:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.61): The C and Prolog interfaces have been extended so as
	  to make more of the library's functionality available to Prolog
	  and C users.

2003-03-04 Tuesday 18:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.67): Comments fixed.

2003-03-04 Tuesday 18:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.64), ppl_c.h (1.66): New functions
	  ppl_ConSys_clear() and ppl_GenSys_clear().

2003-03-04 Tuesday 17:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.85): Predicate
	  ppl_Polyhedron_shuffle_dimensions(Ph, PFun) now fails if the
	  domain of PFun is not contained in the space dimension of Ph.

2003-03-04 Tuesday 17:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.60): Added the new Polyhedron::generalized_affine_image()
	  method.

2003-03-04 Tuesday 15:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.59), src/Constraint.cc (1.37), src/Constraint.defs.hh
	  (1.81): The operator Constraint operator>>(const Constraint&,
	  dimension_type) has been removed.

2003-03-04 Tuesday 15:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.108), src/Polyhedron.defs.hh (1.193):
	  Reordered the sections in the final part of definitions.dox;
	  added a section on extrapolation operators, describing the
	  limited and bounded extrapolation operators.	Corrected
	  capitalization of a doxygen reference.

2003-03-04 Tuesday 14:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.63), ppl_c.h (1.65): New functions
	  ppl_Polyhedron_generalized_affine_image() and
	  ppl_Polyhedron_generalized_affine_image_lhs_rhs().

2003-03-04 Tuesday 08:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.38): Bug corrected.

2003-03-04 Tuesday 08:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.37): Improved tests for widenig
	  operators.  Added tests for ...shuffle_dimensions.

2003-03-04 Tuesday 06:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.17): We require GMP at least 4.1.2.

2003-03-03 Monday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.64): For some reason, GMP up to and
	  including version 4.1.2 requires <stdio.h> to be included before
	  <gmp.h>.

2003-03-03 Monday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.62), ppl_c.h (1.63): The `var'
	  argument of ppl_Constraint_coefficient() and
	  ppl_Generator_coefficient() is of type ppl_dimension_type.

2003-03-03 Monday 21:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.62): FIXME added.

2003-03-03 Monday 21:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.61): Do not worry about versions of GMP
	  prior to 4.1.2 since they are not supported anyway.

2003-03-03 Monday 21:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.61), ppl_c.h (1.60): New function
	  ppl_Polyhedron_time_elapse_assign().

2003-03-03 Monday 21:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.60), ppl_c.h (1.59): Added
	  ppl_Polyhedron_bounded_BHRZ03_extrapolation_assign() and
	  ppl_Polyhedron_bounded_H79_extrapolation_assign().  Comments of
	  ppl_Polyhedron_limited_BHRZ03_extrapolation_assign() and
	  ppl_Polyhedron_limited_H79_extrapolation_assign() fixed.

2003-03-03 Monday 21:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* depcomp (1.4), install-sh (1.4), Watchdog/depcomp (1.2),
	  Watchdog/install-sh (1.2): Updated.

2003-03-03 Monday 21:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.87), Watchdog/configure.ac (1.16): Require
	  Autoconf 2.57 or following and Automake 1.7.3 or following.

2003-03-03 Monday 20:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.27), PowerSet.inlines.hh (1.31): The
	  method PowerSet<CS>::limited_H79_extrapolation_assign() takes a
	  constant constraint system.

2003-03-03 Monday 19:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.59), ppl_c.h (1.58):
	  ppl_Polyhedron_limited_BHRZ03_extrapolation_assign() and
	  ppl_Polyhedron_limited_H79_extrapolation_assign() take a constant
	  constraint system.

2003-03-03 Monday 18:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.12), Watchdog/COPYING (1.2), Watchdog/ChangeLog
	  (1.3), Watchdog/INSTALL (1.2), Watchdog/NEWS (1.2),
	  Watchdog/config.guess (1.2), Watchdog/config.sub (1.2),
	  Watchdog/ltmain.sh (1.2): Updated.

2003-03-03 Monday 18:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Makefile.am (1.7): Update version info.

2003-03-03 Monday 18:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/Makefile.am (1.13), src/Makefile.am (1.59): AGE must
	  be reset to 0 since we removed some interfaces.

2003-03-03 Monday 17:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.30), exceptions2.cc (1.24): Refer the
	  new extrapolation operators.

2003-03-03 Monday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.58), interfaces/C/ppl_c.cc (1.58), interfaces/C/ppl_c.h
	  (1.57), interfaces/Prolog/Prolog_interface.dox (1.76),
	  interfaces/Prolog/pl_check.pl (1.36),
	  interfaces/Prolog/ppl_prolog.icc (1.84),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.32),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.22),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.36),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.60),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.10),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.20),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.54), src/Determinate.defs.hh
	  (1.27), src/Determinate.inlines.hh (1.25), src/Polyhedron.cc
	  (1.314), src/Polyhedron.defs.hh (1.192), src/PowerSet.defs.hh
	  (1.26), src/PowerSet.inlines.hh (1.30), src/algorithms.hh (1.14),
	  tests/Makefile.am (1.173), tests/limitedbhrz03extrapolation1.cc
	  (1.1), tests/limitedbhrz03widening1.cc (1.5),
	  tests/limitedh79extrapolation1.cc (1.1),
	  tests/limitedh79extrapolation2.cc (1.1),
	  tests/limitedh79extrapolation3.cc (1.1),
	  tests/limitedh79extrapolation4.cc (1.1),
	  tests/limitedh79widening1.cc (1.6), tests/limitedh79widening2.cc
	  (1.7), tests/limitedh79widening3.cc (1.4),
	  tests/limitedh79widening4.cc (1.4): From now on, the name
	  `widening' is reserved for operators that come with a convergence
	  guarantee (i.e., with the ability of turning infinite chains to
	  finite ones).  Upper bound operators without such a guarantee
	  contain the word `extrapolation' in their name.

2003-03-03 Monday 16:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.57): Confine implementation classes into
	  anonymous namespaces.

2003-03-03 Monday 16:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.57): News item for Polyhedron::shrink_bounding_box()
	  completed.

2003-03-03 Monday 16:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.56): News item concerning
	  Polyhedron::shuffle_dimensions() completed.

2003-03-03 Monday 16:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.56), ppl_c.h (1.56): New function int
	  ppl_Polyhedron_shuffle_dimensions().

2003-03-03 Monday 15:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.191): Another reorganization for better
	  documentation.

2003-03-03 Monday 14:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.190): Let all the methods
	  <method>_and_minimize be declared after the corresponding methods
	  <method>, so that a less disordered documentation is produced.

2003-03-03 Monday 12:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.313), Polyhedron.defs.hh (1.189): Now the
	  constraint system parameter of methods bounded_*_widening_assign
	  and limited_*_widening_assign is a const parameter.

2003-03-03 Monday 11:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.55), ppl_c.h (1.55): New function int
	  ppl_not_a_dimension(ppl_dimension_type*).

2003-03-03 Monday 11:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.83), Ciao/ppl_ciao.pl
	  (1.31), GNU/ppl_gprolog.pl (1.21), SICStus/ppl_sicstus_sd.cc
	  (1.35), SWI/ppl_swiprolog.cc (1.59), XSB/ppl_xsb.H (1.9),
	  XSB/ppl_xsb.cc (1.19), YAP/ppl_yap.cc (1.53): New predicate
	  ppl_Polyhedron_shuffle_dimensions/2.

2003-03-03 Monday 11:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.55), src/globals.hh (1.31): New function dimension_type
	  not_a_dimension(): returns a value that does not designate a
	  valid dimension.

2003-03-03 Monday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.35): We must explain to the users of CVS versions how to
	  build the documentation.

2003-03-02 Sunday 20:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.34): Make sure all the functionalities are available in
	  all interfaces.

2003-03-02 Sunday 20:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.33), src/Polyhedron.defs.hh (1.188),
	  src/Polyhedron.inlines.hh (1.63): Documentation of
	  Polyhedron::shuffle_dimensions() improved.

2003-03-02 Sunday 19:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.32): More things that should not be forgotten.

2003-03-02 Sunday 19:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.54): News items added, others improved, reorganized.

2003-03-02 Sunday 19:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.11): Updated.

2003-03-01 Saturday 15:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.312): Full stop added.

2003-03-01 Saturday 07:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/sicstus_cfli.ic (1.5): Include
	  assert.h.

2003-03-01 Saturday 07:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.34): Includes
	  reordered.

2003-03-01 Saturday 07:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.86): Enable shared the libraries by default.

2003-03-01 Saturday 07:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.17), config.sub (1.16), ltmain.sh (1.11):
	  Updated.

2003-02-24 Monday 18:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in (1.25),
	  doc/devref-print.doxyconf-latex.in (1.25),
	  doc/devref.doxyconf-html.in (1.26), src/Init.cc (1.8),
	  src/Makefile.am (1.58), src/Polyhedron.cc (1.311),
	  src/Statistics.hh (1.2), src/statistics.hh (1.1): Statistics.hh
	  improved, added to the documentation for developers, and renamed
	  statistics.hh.

2003-02-24 Monday 16:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Init.cc (1.7), Makefile.am (1.57), Polyhedron.cc (1.310),
	  Statistics.hh (1.1), globals.cc (1.12), globals.hh (1.30):
	  Removed from globals.hh and globals.cc all the stuff related to
	  statistics and placed into Statistics.hh; modified Polyhedron.cc
	  and Init.cc accordingly.

2003-02-23 Sunday 21:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bhrz03widening2.cc (1.4), limitedbhrz03widening1.cc
	  (1.4): Restored expected result after correction on evolving
	  points technique.

2003-02-23 Sunday 20:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.309), tests/Makefile.am (1.172),
	  tests/bhrz03widening3.cc (1.4): Improved is_BHRZ03_stabilizing to
	  always avoid considering the low-level constraints when comparing
	  the number of constraints. As a consequence, changed back the
	  known result of test bhrz03widening3.

2003-02-23 Sunday 16:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.31): Remember to comment uncommented classes.

2003-02-23 Sunday 09:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.tex (1.10), user.tex (1.11): Thank the CoVer
	  project.

2003-02-22 Saturday 22:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/conversion.cc (1.44): Two FIXMEs dealt with and removed.

2003-02-22 Saturday 21:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.inlines.hh (1.37), SatRow.inlines.hh (1.24): Redundant
	  comment removed.

2003-02-22 Saturday 21:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.inlines.hh (1.36), SatRow.inlines.hh (1.23): FIXMEs
	  related to Doxygen's bugs removed.

2003-02-22 Saturday 21:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.defs.hh (1.61): FIXME dealt with and removed.

2003-02-22 Saturday 21:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.171), bhrz03widening2.cc (1.3),
	  bhrz03widening3.cc (1.3), limitedbhrz03widening1.cc (1.3):
	  Expected results adjusted.

2003-02-22 Saturday 17:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.308): Commit to
	  BHRZ03_EP_DELAY_INTERSECTION.

2003-02-22 Saturday 09:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PowerSet.defs.hh (1.25): Fixed a parameter name mismatch in
	  the documentation.

2003-02-21 Friday 19:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.80): Doxygen documentation fix: "<" and
	  ">" should not be escaped by "\" when occurring inside a \code
	  ... \endcode section.

2003-02-21 Friday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.107): Bibliography and bibliographic
	  references improved.

2003-02-21 Friday 18:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/bib2html2.sed (1.3): Provide text for the \ref link commands.

2003-02-21 Friday 18:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: bib2dox (1.3), bib2html2.sed (1.2): Produce
	  cross-references that work well with any Doxygen output.

2003-02-21 Friday 16:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.106), src/Polyhedron.defs.hh (1.187): In
	  the documentation, added explanation for the BHRZ03 widening and
	  the widening with tokens technique.  Broken <a name=...> links
	  replaced by \ref and \anchor.

2003-02-21 Friday 11:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.10): Updated.

2003-02-21 Friday 11:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.85): Version number bumped.

2003-02-21 Friday 10:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.307), Polyhedron.defs.hh (1.186): The
	  widening-with-tokens delay technique is now also available for
	  the standard widening as well as the ``limited'' and ``bounded''
	  variants.

2003-02-21 Friday 09:28  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* TODO (1.30): Items dealt with removed.

2003-02-21 Friday 09:22  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.75), pl_check.pl
	  (1.35): Prolog_interface.dox:   Added simple descriptions for the
	  timeout predicates.	 Atom added to the syntax of the language
	  specification.  pl_check.pl	Several small improvements.

2003-02-21 Friday 08:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.306), Polyhedron.defs.hh (1.185): In
	  Polyhedron::BHRZ03_widening_assign(), pass the number of tokens
	  as `unsigned', not `long'.

2003-02-20 Thursday 16:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Init.cc (1.6), Polyhedron.cc (1.305), Polyhedron.defs.hh
	  (1.184), globals.hh (1.29): The averaging_constraints technique
	  is now called combining_constraints.	Added optional pointer
	  argument to BHRZ03_widening_assign to implement the
	  ``widening-with-tokens'' technique.

2003-02-19 Wednesday 09:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/track_allocation.hh (1.12): Declaration fixed.

2003-02-16 Sunday 14:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.9): Updated.

2003-02-16 Sunday 14:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: bhrz03widening15.cc (1.4), bhrz03widening6.cc (1.3),
	  bhrz03widening7.cc (1.3): Expected results fixed.

2003-02-11 Tuesday 11:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.304): Commit to
	  BHRZ03_AC_CHECKS_H79_BOUNDARY=1.

2003-02-11 Tuesday 11:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.303): Commit to BHRZ03_AC_IS_SUM=1.

2003-02-11 Tuesday 11:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.302): Commit to BHRZ03_ER_CWQ=1.

2003-02-09 Sunday 18:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.301): New candidate techniques for the
	  implementation of BRHZ03.

2003-02-07 Friday 20:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.300): Let an assertion in
	  select_H79_constraints be satisfied.

2003-02-07 Friday 17:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.299): Unreachable statements removed.

2003-02-07 Friday 17:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.62): Make sure inline functions are
	  defined before being used.

2003-02-07 Friday 11:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.298): Added new preproc flag BHRZ03_EP_P1_P2
	  to be experimented with.

2003-02-07 Friday 10:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.10): Throw std::runtime_error instead of
	  calling abort().

2003-02-07 Friday 10:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.inlines.hh (1.9): Throw std::invalid_argument
	  if a Watchdog constructor is called with a non-positive number of
	  time units.

2003-02-06 Thursday 18:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.297): Added preprocessing flag
	  BHRZ03_EP_DELAY_INTERSECTION, enabling a different implementation
	  of the evolving points technique to be experimented with.

2003-02-06 Thursday 10:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.296): Make BHRZ03_AC_IS_SUM and
	  BHRZ03_AC_CHECKS_H79_BOUNDARY default to 1.

2003-02-05 Wednesday 16:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.295), tests/limitedh79widening2.cc (1.6):
	  Corrected the implementation of limited_H79_widening_assign to
	  match its specification; the same for
	  limited_BHRZ03_widening_assign.  Corrected the known result of
	  test limitedh79widening2, which was computed according to a
	  flawed specification.

2003-02-05 Wednesday 15:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.294): Both BHRZ03_AC_IS_SUM and
	  BHRZ03_AC_CHECKS_H79_BOUNDARY default to 0.

2003-02-05 Wednesday 14:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.293), Polyhedron.defs.hh (1.183): A first,
	  totally untested implementation of
	  Polyhedron::bounded_H79_widening_assign() and
	  Polyhedron::bounded_BHRZ03_widening_assign().

2003-02-05 Wednesday 11:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.182): Improved the Doxygen comments for
	  the two limited widening operators.

2003-02-05 Wednesday 10:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.181): Give more guarantees to the user
	  of Polyhedron::shrink_bounding_box().

2003-02-05 Wednesday 10:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.292): Added preprocessing flags to control
	  whether or not, in the technique BHRZ03_averaging_constraints, we
	  actually compute averages or just sum the constraints and whether
	  the selected point can lie on the boundary of H79.

2003-02-04 Tuesday 21:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.16), config.sub (1.15): Updated.

2003-02-04 Tuesday 20:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.291): Spurious newline removed.

2003-02-04 Tuesday 19:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.290): Avoiding equality check in
	  is_BHRZ03_stabilizing, which is called more than once, and
	  computing it just once inside BHRZ03_widening_assign.

2003-02-04 Tuesday 11:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.289): Corrected a bug in
	  H79_widening_assign, whereby we were relying on the number of
	  columns of a constraint system that was not up-to-date.

2003-02-04 Tuesday 09:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.288), Polyhedron.inlines.hh (1.61): When
	  declaring constraints (generators) no longer up-to-date, also
	  clearing the pending constraints (generators) flag.  In
	  H79_widening_assign, avoiding the creation of polyhedra having
	  the wrong dimension.

2003-02-03 Monday 15:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.287), Polyhedron.defs.hh (1.180): The
	  quick equivalence check is now a provate method of Polyhedron and
	  it is called also by the inclusion test operator<=.  Improved the
	  computation of the H79widening operator by resorting to CH78 when
	  polyhedra x and y have the same dimension.

2003-02-01 Saturday 15:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.286): Commented out conditionals removed.

2003-02-01 Saturday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.51): Old garbage removed.

2003-01-31 Friday 21:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.50): Fixed a very serious performance bug in
	  Matrix::add_pending_rows() whereby adding one row to a matrix
	  with `n' rows had complexity O(n) instead of amortized constant.

2003-01-27 Monday 13:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: expected (1.6), expected2 (1.7): Adapted
	  to the new normal form.

2003-01-27 Monday 11:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* configure.ac (1.84), interfaces/Prolog/expected (1.5),
	  interfaces/Prolog/expected2 (1.9), src/Row.cc (1.49),
	  src/Row.defs.hh (1.60): Modified strong normalization of rows, so
	  that the first *homogeneous* coefficient is required to be
	  positive.

2003-01-27 Monday 10:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.285): Removed no longer used preprocessing
	  flag.

2003-01-27 Monday 10:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc (1.49), Matrix.defs.hh (1.42): Added private
	  method Matrix::gram_shmidt() to orthogonalize a matrix so that
	  its rays/points/inequalities have a unique representation.

2003-01-27 Monday 10:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: conversion.cc (1.43), minimize.cc (1.31), simplify.cc
	  (1.25): Adjusted a few comments that became outdated after the
	  merge with the lazy branch. Removed a couple of FIXME's.

2003-01-26 Sunday 22:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.cc (1.9): Ported to Cygwin (it only supports
	  ITIMER_REAL).  Robustness increased.	Throw std:runtime_error
	  exceptions instead of calling exit().

2003-01-24 Friday 18:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.77), GenSys.defs.hh (1.89), Polyhedron.cc
	  (1.284), Polyhedron.defs.hh (1.179), Polyhedron.inlines.hh
	  (1.60): Equality test between polyhedra improved to first perform
	  a few fast-fail checks, including a complete test for
	  representations in normal form.

2003-01-24 Friday 10:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.283), Polyhedron.defs.hh (1.178): Added
	  private method  void select_CH78_constraints(const Polyhedron& y,
	  ConSys& cs) const; performing a constraint selection from
	  y.con_sys according to the definition of the widening as reported
	  in Cousot&Halbwachs78.

2003-01-24 Friday 10:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.79), GenSys.cc (1.75), GenSys.defs.hh
	  (1.88): Added private method bool
	  GenSys::satisfied_by_all_generators(const Constraint& c) const.

2003-01-21 Tuesday 11:22  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.34): Test for time out
	  predicates improved.

2003-01-21 Tuesday 10:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.82): Make sure that the
	  timeout is reset when caught.

2003-01-21 Tuesday 09:00  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.74), pl_check.pl
	  (1.33), ppl_prolog.icc (1.81): Restored deleted text.

2003-01-20 Monday 15:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/expected (1.4), interfaces/Prolog/expected2
	  (1.8), interfaces/Prolog/XSB/expected (1.5),
	  interfaces/Prolog/XSB/expected2 (1.6), tests/bhrz03widening15.cc
	  (1.3), tests/bhrz03widening9.cc (1.4): Applying some semantically
	  preserving syntactic changes to the expected results in order to
	  match what is obtained after modification to methods
	  Matrix::gauss() and Matrix::back_substitute().  The changes are
	  also semantic for the known results of bhrz03widening9/15.

2003-01-20 Monday 09:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.282), Polyhedron.defs.hh (1.177):
	  Rewritten methods related to the computation of the BHRZ03
	  widening, which are no longer static and now take the polyhedron
	  corresponding to the H79 widening as a parameter.

2003-01-20 Monday 09:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc (1.48), Row.cc (1.48), Row.defs.hh (1.59),
	  minimize.cc (1.30), simplify.cc (1.24): Strong normalization of
	  Row objects now enforce the first non-zero coefficient to be
	  positive.  When creating a matrix having n copies of the same
	  row, the matrix is now declared to be sorted (since sortedness by
	  itself does not implies that it has no duplicates); this also
	  includes the case of empty matrices.	Some improvements in
	  methods Matrix::gauss() and Matrix::back_substitute().

2003-01-18 Saturday 16:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.36), Constraint.inlines.hh (1.43),
	  Generator.cc (1.44), Matrix.cc (1.47), Polyhedron.cc (1.281),
	  minimize.cc (1.29), simplify.cc (1.23): Implemented changes
	  required to make the library compile cleanly and pass `make
	  check' when the flag EXTRA_NORMALIZATION is set to 1 (the default
	  being still 0).

2003-01-18 Saturday 12:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.170): The `libppl_tests.a' library should
	  not be built until the `make check' command is run.

2003-01-18 Saturday 11:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.280): Corrected a bug in
	  poly_hull_assign_and_minimize().

2003-01-15 Wednesday 14:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* README (1.14), doc/devref-browse.doxyconf-latex.in (1.24),
	  doc/devref-print.doxyconf-latex.in (1.24),
	  doc/devref.doxyconf-html.in (1.25), src/Init.inlines.hh (1.8): No
	  longer using file Init.inlines.hh.

2003-01-15 Wednesday 14:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.279): After applying each of the techniques
	  of the BHRZ03 widening, check whether we have obtained a
	  polyhedron strictly smaller than that one obtainable using the
	  H79 widening.

2003-01-15 Wednesday 14:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Init.cc (1.5), Init.defs.hh (1.9), Makefile.am (1.56):
	  Initialization and finalization of the library are no longer
	  inlined.

2003-01-13 Monday 23:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.278): Many improvements in the code and
	  comments of method averaging_constraints().

2003-01-12 Sunday 23:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.59): Try to avoid minimization in
	  method check_empty().

2003-01-12 Sunday 23:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.277): In add_generators_and_minimize(), an
	  odd use of method check_empty() replaced by correct use of method
	  minimize().

2003-01-12 Sunday 23:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.defs.hh (1.41): Fixed documentation of method
	  index_first_pending().

2003-01-12 Sunday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.169), bug1.cc (1.4), bug1.dat (1.3):
	  Obsolete bug witness removed.

2003-01-12 Sunday 11:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.168): No longer lie to automake.

2003-01-12 Sunday 08:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Watchdog.defs.hh (1.11): Spurious, illegal qualification
	  removed.

2003-01-12 Sunday 00:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.276): In check_universe(), try to avoid
	  minimization as much as possible.

2003-01-11 Saturday 22:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.275): Got rid of preprocessing flag
	  NEW_LIMITED_GROWTH_ORDERING: now always using the new lgo in
	  is_BHRZ03_stabilizing().  Added preprocessing flag
	  EVOLVING_RAYS_SATURATORS for testing purposes on the evolving
	  rays technique of BHRZ03_widening_assign().  Some improvements in
	  the variable names and comments of the evolving rays technique.
	  No longer testing for stabilization after applying H79 (unless
	  assertions are turned on).

2003-01-10 Friday 21:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.15), config.sub (1.14): Updated.

2003-01-10 Friday 10:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.80): Paranoid robustness
	  improvements.

2003-01-10 Friday 09:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.79): Avoid leaking memory on
	  exit and in the case of multiple calls to ppl_set_timeout/1 not
	  intermixed to calls to ppl_reset_timeout/0.

2003-01-10 Friday 09:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.53), interfaces/Prolog/ppl_prolog.icc (1.78),
	  interfaces/Prolog/Ciao/Makefile.am (1.15),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.30),
	  interfaces/Prolog/GNU/Makefile.am (1.26),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.20),
	  interfaces/Prolog/SICStus/Makefile.am (1.35),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.33),
	  interfaces/Prolog/SWI/Makefile.am (1.27),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.58),
	  interfaces/Prolog/XSB/Makefile.am (1.13),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.8),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.18),
	  interfaces/Prolog/YAP/Makefile.am (1.17),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.52), src/Init.cc (1.4):
	  Timeout computation facilities have been added to the Prolog
	  interfaces: new predicates ppl_set_timeout_exception_atom/1,
	  ppl_timeout_exception_atom/1, ppl_set_timeout/1,
	  ppl_reset_timeout/0.

2003-01-10 Friday 09:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.29): More urgent things to do.

2003-01-10 Friday 09:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/watchdog1.cc (1.16): Do not explicitly initialize the Parma
	  Watchdog Library.

2003-01-10 Friday 09:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.cc (1.8), Watchdog.defs.hh (1.10),
	  Watchdog.inlines.hh (1.8), Watchdog.types.hh (1.4): New "nifty
	  counter" implementation of library's initialization and
	  finalization.  Explicit initialization and finalization is no
	  longer necessary nor possible.

2003-01-10 Friday 08:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: expected (1.4), expected2 (1.5): Update
	  copyright years.

2003-01-09 Thursday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.83), Watchdog/configure.ac (1.15): Building the
	  Parma Watchdog Library is now enabled by default.

2003-01-09 Thursday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.77): Added a new class
	  `timeout_exception'.

2003-01-07 Tuesday 16:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.73), pl_check.pl
	  (1.32): A typo in the Prolog_interface,dox corrected and
	  ppl_Polyhedron_is_disjoint_from_Polyhedron/2 documentation added.
	  Many improvements to pl_check.pl and some bugs fixed.

2003-01-07 Tuesday 16:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.82): Bump version number.

2003-01-07 Tuesday 15:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: expected (1.3), expected2 (1.4): Update
	  copyright years.

2003-01-07 Tuesday 15:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.52), configure.ac (1.81): We now require GMP 4.1.2 or
	  higher.

2003-01-07 Tuesday 15:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* CREDITS (1.5): Typo corrected.

2003-01-07 Tuesday 15:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* CREDITS (1.4), doc/devref.tex (1.9), doc/user.tex (1.10): The
	  MURST project COFIN01 credited.

2003-01-07 Tuesday 14:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Interval.defs.hh (1.12), Interval.inlines.hh (1.8): Old
	  kludges removed.

2003-01-07 Tuesday 12:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/bhrz03widening9.cc (1.3): Updated the known result to match
	  the output according to the new limited growth ordering
	  convergence criterion.

2003-01-07 Tuesday 12:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/globals.hh (1.28): Do not output statistics by default.

2003-01-01 Wednesday 02:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.21), README (1.13), configure.ac (1.80),
	  Watchdog/Makefile.am (1.6), Watchdog/README (1.4),
	  Watchdog/Watchdog.cc (1.7), Watchdog/Watchdog.defs.hh (1.9),
	  Watchdog/Watchdog.inlines.hh (1.7), Watchdog/Watchdog.types.hh
	  (1.3), Watchdog/configure.ac (1.14), Watchdog/pwl_header.top
	  (1.3), doc/Makefile.am (1.22), doc/definitions.dox (1.105),
	  doc/devref.tex (1.8), doc/user.tex (1.9), interfaces/Makefile.am
	  (1.6), interfaces/C/Makefile.am (1.12), interfaces/C/ppl_c.cc
	  (1.54), interfaces/C/ppl_c.h (1.54),
	  interfaces/Prolog/Makefile.am (1.21),
	  interfaces/Prolog/Prolog_interface.dox (1.72),
	  interfaces/Prolog/clpq.pl (1.14), interfaces/Prolog/clpq2.pl
	  (1.25), interfaces/Prolog/exceptions.hh (1.7),
	  interfaces/Prolog/expected (1.3), interfaces/Prolog/expected2
	  (1.7), interfaces/Prolog/pl_check.pl (1.31),
	  interfaces/Prolog/ppl_prolog.icc (1.76),
	  interfaces/Prolog/track_allocation.hh (1.11),
	  interfaces/Prolog/Ciao/Makefile.am (1.14),
	  interfaces/Prolog/Ciao/ciao_clpq.pl (1.4),
	  interfaces/Prolog/Ciao/ppl_ciao.cc (1.17),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.29),
	  interfaces/Prolog/GNU/Makefile.am (1.25),
	  interfaces/Prolog/GNU/gp_clpq.pl (1.6),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.19),
	  interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.12),
	  interfaces/Prolog/SICStus/Makefile.am (1.34),
	  interfaces/Prolog/SICStus/ppl_sicstus.pl (1.22),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.32),
	  interfaces/Prolog/SICStus/sicstus_cfli.cc (1.2),
	  interfaces/Prolog/SICStus/sicstus_cfli.h (1.3),
	  interfaces/Prolog/SICStus/sicstus_cfli.ic (1.4),
	  interfaces/Prolog/SICStus/sp_clpq.pl (1.8),
	  interfaces/Prolog/SWI/Makefile.am (1.26),
	  interfaces/Prolog/SWI/pl_clpq.cc (1.6),
	  interfaces/Prolog/SWI/pl_clpq.pl (1.4),
	  interfaces/Prolog/SWI/ppl_pl.cc (1.6),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.57),
	  interfaces/Prolog/SWI/ppl_swiprolog.pl (1.2),
	  interfaces/Prolog/XSB/Makefile.am (1.12),
	  interfaces/Prolog/XSB/expected (1.2),
	  interfaces/Prolog/XSB/expected2 (1.3),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.17),
	  interfaces/Prolog/XSB/xsb_clpq.P (1.6),
	  interfaces/Prolog/XSB/xsb_clpq2.P (1.4),
	  interfaces/Prolog/YAP/Makefile.am (1.16),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.51),
	  interfaces/Prolog/YAP/ppl_yap.pl (1.6),
	  interfaces/Prolog/YAP/yap_clpq.pl (1.6),
	  interfaces/Prolog/YAP/yap_clpq2.pl (1.2), m4/Makefile.am (1.8),
	  m4/ac_check_gmp.m4 (1.11), m4/ac_cxx_flexible_arrays.m4 (1.5),
	  src/AskTell.defs.hh (1.11), src/AskTell.inlines.hh (1.11),
	  src/AskTell.types.hh (1.4), src/BoundingBox.cc (1.5),
	  src/BoundingBox.defs.hh (1.9), src/BoundingBox.inlines.hh (1.7),
	  src/BoundingBox.types.hh (1.5), src/C_Polyhedron.cc (1.4),
	  src/C_Polyhedron.defs.hh (1.19), src/C_Polyhedron.inlines.hh
	  (1.13), src/C_Polyhedron.types.hh (1.6), src/ConSys.cc (1.57),
	  src/ConSys.defs.hh (1.76), src/ConSys.inlines.hh (1.29),
	  src/ConSys.types.hh (1.6), src/Constraint.cc (1.35),
	  src/Constraint.defs.hh (1.78), src/Constraint.inlines.hh (1.42),
	  src/Constraint.types.hh (1.6), src/Determinate.defs.hh (1.26),
	  src/Determinate.inlines.hh (1.24), src/Determinate.types.hh
	  (1.4), src/GenSys.cc (1.74), src/GenSys.defs.hh (1.87),
	  src/GenSys.inlines.hh (1.30), src/GenSys.types.hh (1.6),
	  src/Generator.cc (1.43), src/Generator.defs.hh (1.81),
	  src/Generator.inlines.hh (1.39), src/Generator.types.hh (1.6),
	  src/Init.cc (1.3), src/Init.defs.hh (1.8), src/Init.inlines.hh
	  (1.7), src/Init.types.hh (1.5), src/Integer.cc (1.3),
	  src/Integer.defs.hh (1.10), src/Integer.inlines.hh (1.9),
	  src/Integer.types.hh (1.7), src/Interval.cc (1.6),
	  src/Interval.defs.hh (1.11), src/Interval.inlines.hh (1.7),
	  src/Interval.types.hh (1.5), src/LCompare.defs.hh (1.5),
	  src/LCompare.inlines.hh (1.4), src/LCompare.types.hh (1.4),
	  src/LinExpression.cc (1.16), src/LinExpression.defs.hh (1.57),
	  src/LinExpression.inlines.hh (1.26), src/LinExpression.types.hh
	  (1.6), src/Makefile.am (1.55), src/Matrix.cc (1.46),
	  src/Matrix.defs.hh (1.40), src/Matrix.inlines.hh (1.29),
	  src/Matrix.types.hh (1.6), src/NNC_Polyhedron.cc (1.10),
	  src/NNC_Polyhedron.defs.hh (1.21), src/NNC_Polyhedron.inlines.hh
	  (1.15), src/NNC_Polyhedron.types.hh (1.6),
	  src/Poly_Con_Relation.cc (1.7), src/Poly_Con_Relation.defs.hh
	  (1.19), src/Poly_Con_Relation.inlines.hh (1.9),
	  src/Poly_Con_Relation.types.hh (1.5), src/Poly_Gen_Relation.cc
	  (1.7), src/Poly_Gen_Relation.defs.hh (1.18),
	  src/Poly_Gen_Relation.inlines.hh (1.9),
	  src/Poly_Gen_Relation.types.hh (1.5), src/Polyhedron.cc (1.274),
	  src/Polyhedron.defs.hh (1.176), src/Polyhedron.inlines.hh (1.58),
	  src/Polyhedron.types.hh (1.8), src/PowerSet.defs.hh (1.24),
	  src/PowerSet.inlines.hh (1.29), src/PowerSet.types.hh (1.4),
	  src/Row.cc (1.47), src/Row.defs.hh (1.58), src/Row.inlines.hh
	  (1.35), src/Row.types.hh (1.6), src/SatMatrix.cc (1.25),
	  src/SatMatrix.defs.hh (1.29), src/SatMatrix.inlines.hh (1.18),
	  src/SatMatrix.types.hh (1.6), src/SatRow.cc (1.17),
	  src/SatRow.defs.hh (1.25), src/SatRow.inlines.hh (1.22),
	  src/SatRow.types.hh (1.6), src/Status.cc (1.19),
	  src/Status.defs.hh (1.25), src/Status.inlines.hh (1.12),
	  src/Status.types.hh (1.6), src/Topology.hh (1.7), src/Variable.cc
	  (1.11), src/Variable.defs.hh (1.29), src/Variable.inlines.hh
	  (1.15), src/Variable.types.hh (1.6), src/algorithms.hh (1.13),
	  src/conversion.cc (1.42), src/globals.cc (1.11), src/globals.hh
	  (1.27), src/initializer.hh (1.6), src/minimize.cc (1.28),
	  src/ppl_header.top (1.5), src/simplify.cc (1.22), tests/BBox.cc
	  (1.3), tests/BBox.hh (1.2), tests/CbecomesNNC1.cc (1.3),
	  tests/Makefile.am (1.167), tests/NNCinclusion1.cc (1.5),
	  tests/NNCminimize1.cc (1.8), tests/NNCminimize2.cc (1.8),
	  tests/NNCminimize3.cc (1.8), tests/NNCminimize4.cc (1.10),
	  tests/NNCminimize5.cc (1.7), tests/NNCminimize6.cc (1.9),
	  tests/PFunction.cc (1.2), tests/PFunction.hh (1.2),
	  tests/addconstraint1.cc (1.3), tests/addconstraint2.cc (1.2),
	  tests/addconstraint3.cc (1.2), tests/addconstraints1.cc (1.9),
	  tests/addconstraints10.cc (1.8), tests/addconstraints11.cc (1.9),
	  tests/addconstraints12.cc (1.2), tests/addconstraints13.cc (1.4),
	  tests/addconstraints2.cc (1.17), tests/addconstraints3.cc (1.7),
	  tests/addconstraints4.cc (1.9), tests/addconstraints5.cc (1.10),
	  tests/addconstraints6.cc (1.11), tests/addconstraints7.cc (1.10),
	  tests/addconstraints8.cc (1.10), tests/addconstraints9.cc (1.11),
	  tests/adddimensions1.cc (1.12), tests/adddimensions10.cc (1.5),
	  tests/adddimensions11.cc (1.3), tests/adddimensions12.cc (1.2),
	  tests/adddimensions2.cc (1.8), tests/adddimensions3.cc (1.10),
	  tests/adddimensions4.cc (1.8), tests/adddimensions5.cc (1.6),
	  tests/adddimensions6.cc (1.6), tests/adddimensions7.cc (1.6),
	  tests/adddimensions8.cc (1.4), tests/adddimensions9.cc (1.4),
	  tests/addgenerator1.cc (1.3), tests/addgenerator2.cc (1.3),
	  tests/addgenerator3.cc (1.2), tests/addgenerator4.cc (1.3),
	  tests/addgenerators1.cc (1.10), tests/addgenerators10.cc (1.2),
	  tests/addgenerators11.cc (1.4), tests/addgenerators12.cc (1.4),
	  tests/addgenerators2.cc (1.10), tests/addgenerators3.cc (1.10),
	  tests/addgenerators4.cc (1.10), tests/addgenerators5.cc (1.10),
	  tests/addgenerators6.cc (1.10), tests/addgenerators7.cc (1.7),
	  tests/addgenerators8.cc (1.5), tests/addgenerators9.cc (1.4),
	  tests/affineimage1.cc (1.10), tests/affineimage2.cc (1.9),
	  tests/affineimage3.cc (1.2), tests/affineimage4.cc (1.2),
	  tests/affineimage5.cc (1.3), tests/affineimage6.cc (1.2),
	  tests/affineimage7.cc (1.2), tests/affineimage8.cc (1.5),
	  tests/affinepreimage1.cc (1.9), tests/affinepreimage10.cc (1.5),
	  tests/affinepreimage2.cc (1.9), tests/affinepreimage3.cc (1.9),
	  tests/affinepreimage4.cc (1.10), tests/affinepreimage5.cc (1.2),
	  tests/affinepreimage6.cc (1.3), tests/affinepreimage7.cc (1.2),
	  tests/affinepreimage8.cc (1.2), tests/affinepreimage9.cc (1.3),
	  tests/affinetrans.cc (1.12), tests/append1.cc (1.18),
	  tests/append2.cc (1.19), tests/ascii_dump_load1.cc (1.11),
	  tests/ascii_dump_load2.cc (1.9), tests/ascii_dump_load3.cc
	  (1.12), tests/ascii_dump_load4.cc (1.12),
	  tests/ascii_dump_load5.cc (1.8), tests/ascii_dump_load6.cc (1.5),
	  tests/ascii_dump_load7.cc (1.5), tests/bhrz03widening1.cc (1.2),
	  tests/bhrz03widening10.cc (1.2), tests/bhrz03widening11.cc (1.2),
	  tests/bhrz03widening12.cc (1.2), tests/bhrz03widening13.cc (1.2),
	  tests/bhrz03widening14.cc (1.2), tests/bhrz03widening15.cc (1.2),
	  tests/bhrz03widening16.cc (1.2), tests/bhrz03widening17.cc (1.2),
	  tests/bhrz03widening18.cc (1.2), tests/bhrz03widening19.cc (1.2),
	  tests/bhrz03widening2.cc (1.2), tests/bhrz03widening3.cc (1.2),
	  tests/bhrz03widening4.cc (1.2), tests/bhrz03widening5.cc (1.2),
	  tests/bhrz03widening6.cc (1.2), tests/bhrz03widening7.cc (1.2),
	  tests/bhrz03widening8.cc (1.2), tests/bhrz03widening9.cc (1.2),
	  tests/bounded1.cc (1.8), tests/boundingbox1.cc (1.31),
	  tests/boundingbox2.cc (1.16), tests/boundingbox3.cc (1.7),
	  tests/boundingbox4.cc (1.4), tests/bounds1.cc (1.4),
	  tests/bounds2.cc (1.4), tests/concatenate1.cc (1.5),
	  tests/concatenate2.cc (1.5), tests/concatenate3.cc (1.5),
	  tests/concatenate4.cc (1.4), tests/concatenate5.cc (1.2),
	  tests/concatenate6.cc (1.4), tests/constraints1.cc (1.4),
	  tests/constraints2.cc (1.4), tests/constraints3.cc (1.4),
	  tests/constraints4.cc (1.4), tests/contains1.cc (1.2),
	  tests/disjoint1.cc (1.2), tests/disjoint2.cc (1.4),
	  tests/disjoint3.cc (1.3), tests/ehandlers.cc (1.4),
	  tests/ehandlers.hh (1.6), tests/empty1.cc (1.11),
	  tests/exceptions1.cc (1.29), tests/exceptions2.cc (1.23),
	  tests/files.cc (1.4), tests/files.hh (1.4),
	  tests/generalizedaffineimage1.cc (1.5),
	  tests/generalizedaffineimage10.cc (1.4),
	  tests/generalizedaffineimage11.cc (1.3),
	  tests/generalizedaffineimage12.cc (1.2),
	  tests/generalizedaffineimage2.cc (1.4),
	  tests/generalizedaffineimage3.cc (1.5),
	  tests/generalizedaffineimage4.cc (1.3),
	  tests/generalizedaffineimage5.cc (1.3),
	  tests/generalizedaffineimage6.cc (1.3),
	  tests/generalizedaffineimage7.cc (1.5),
	  tests/generalizedaffineimage8.cc (1.3),
	  tests/generalizedaffineimage9.cc (1.3), tests/generators1.cc
	  (1.11), tests/generators2.cc (1.7), tests/generators3.cc (1.3),
	  tests/generators4.cc (1.3), tests/generators5.cc (1.3),
	  tests/generators6.cc (1.4), tests/h79widening1.cc (1.4),
	  tests/h79widening2.cc (1.5), tests/h79widening3.cc (1.5),
	  tests/h79widening4.cc (1.2), tests/h79widening5.cc (1.3),
	  tests/inclusion1.cc (1.5), tests/inclusion2.cc (1.2),
	  tests/intersection1.cc (1.4), tests/intersection10.cc (1.3),
	  tests/intersection11.cc (1.4), tests/intersection2.cc (1.7),
	  tests/intersection3.cc (1.5), tests/intersection4.cc (1.5),
	  tests/intersection5.cc (1.5), tests/intersection6.cc (1.5),
	  tests/intersection7.cc (1.4), tests/intersection8.cc (1.3),
	  tests/intersection9.cc (1.3), tests/limitedbhrz03widening1.cc
	  (1.2), tests/limitedh79widening1.cc (1.5),
	  tests/limitedh79widening2.cc (1.5), tests/limitedh79widening3.cc
	  (1.3), tests/limitedh79widening4.cc (1.3),
	  tests/linearpartition1.cc (1.8), tests/linearpartition2.cc (1.8),
	  tests/linearpartition3.cc (1.8), tests/linexpression1.cc (1.2),
	  tests/mc91.cc (1.10), tests/memory1.cc (1.18),
	  tests/minconstraints1.cc (1.3), tests/minconstraints2.cc (1.3),
	  tests/minconstraints3.cc (1.2), tests/minconstraints4.cc (1.6),
	  tests/mingenerators1.cc (1.3), tests/mingenerators2.cc (1.2),
	  tests/mingenerators3.cc (1.2), tests/onepoint.cc (1.8),
	  tests/operator1.cc (1.3), tests/permute.cc (1.25),
	  tests/polydifference1.cc (1.5), tests/polydifference2.cc (1.7),
	  tests/polydifference3.cc (1.2), tests/polydifference4.cc (1.3),
	  tests/polydifference5.cc (1.4), tests/polydifference6.cc (1.3),
	  tests/polydifference7.cc (1.3), tests/polyhull1.cc (1.5),
	  tests/polyhull10.cc (1.2), tests/polyhull2.cc (1.5),
	  tests/polyhull3.cc (1.5), tests/polyhull4.cc (1.4),
	  tests/polyhull5.cc (1.3), tests/polyhull6.cc (1.3),
	  tests/polyhull7.cc (1.2), tests/polyhull8.cc (1.3),
	  tests/polyhull9.cc (1.4), tests/ppl_test.hh (1.3), tests/print.cc
	  (1.9), tests/print.hh (1.13), tests/randphull1.cc (1.7),
	  tests/randphull2.cc (1.4), tests/relations1.cc (1.8),
	  tests/relations10.cc (1.4), tests/relations11.cc (1.4),
	  tests/relations12.cc (1.3), tests/relations13.cc (1.3),
	  tests/relations14.cc (1.3), tests/relations15.cc (1.3),
	  tests/relations16.cc (1.3), tests/relations17.cc (1.5),
	  tests/relations18.cc (1.3), tests/relations19.cc (1.4),
	  tests/relations2.cc (1.9), tests/relations3.cc (1.9),
	  tests/relations4.cc (1.9), tests/relations5.cc (1.9),
	  tests/relations6.cc (1.8), tests/relations7.cc (1.8),
	  tests/relations8.cc (1.8), tests/relations9.cc (1.10),
	  tests/removedim1.cc (1.9), tests/removedim2.cc (1.13),
	  tests/removedim3.cc (1.9), tests/removedim4.cc (1.10),
	  tests/removedim5.cc (1.8), tests/removedim6.cc (1.11),
	  tests/removedim7.cc (1.6), tests/removedim8.cc (1.4),
	  tests/removedim9.cc (1.3), tests/shuffledim1.cc (1.6),
	  tests/smm1.cc (1.12), tests/timeelapse1.cc (1.6),
	  tests/timeelapse2.cc (1.6), tests/timeelapse3.cc (1.6),
	  tests/timeelapse4.cc (1.6), tests/timeelapse5.cc (1.6),
	  tests/timeelapse6.cc (1.2), tests/timeelapse7.cc (1.2),
	  tests/timeelapse8.cc (1.3), tests/timings.cc (1.3),
	  tests/timings.hh (1.3), tests/topclosed1.cc (1.3),
	  tests/topclosed2.cc (1.2), tests/topclosed3.cc (1.4),
	  tests/topclosure1.cc (1.5), tests/topclosure2.cc (1.2),
	  tests/topclosure3.cc (1.2), tests/topclosure4.cc (1.4),
	  tests/universe1.cc (1.7), tests/universe2.cc (1.8),
	  tests/universe3.cc (1.8), tests/universe4.cc (1.8),
	  tests/universe5.cc (1.9), tests/universe6.cc (1.6),
	  tests/watchdog1.cc (1.15), tests/writeconsys1.cc (1.5),
	  tests/writegensys1.cc (1.6), tests/writegensys2.cc (1.6),
	  tests/writegensys3.cc (1.5), tests/writepolyhedron1.cc (1.5),
	  tests/writepolyhedron2.cc (1.6), tests/writepolyhedron3.cc (1.5),
	  tests/writerelation1.cc (1.5), tests/writevariable1.cc (1.5):
	  Update copyright years.

2002-12-31 Tuesday 17:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.273), Polyhedron.defs.hh (1.175): The
	  three different techniques making up BHRZ03_widening_assign() are
	  now isolated into corresponding members, to ease further
	  experimentation.  Keeping track of the convergence reason and of
	  the successful technique in order to later output statistics
	  about it.

2002-12-31 Tuesday 17:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Init.inlines.hh (1.6), globals.cc (1.10), globals.hh
	  (1.26): Added a global struct to keep statistics about BHRZ03
	  when the pre-proc flag PPL_STATISTICS is set (now set by
	  default). Statistics are outputted during the library
	  finalization.

2002-12-30 Monday 19:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.272): In the NEW_LIMITED_GROWTH_ORDERING
	  case of method is_BHRZ03_stabilizing(), when we have the same
	  number of constraints for x and y, we now also check if the same
	  number is obtained when disregarding the positivity constraint.

2002-12-30 Monday 09:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.271): Wrong reference to `abort()' corrected
	  into a call.

2002-12-30 Monday 09:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.270): Added preproc flag
	  NEW_LIMITED_GROWTH_ORDERING to test the new convergence criterion
	  for bhrz03. The new stabilization test now prints a '*' on
	  std::cerr each time we miss an opportunity of applying the new
	  widening techniques due to the new convergence criterion.

2002-12-26 Thursday 14:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.75), Ciao/ppl_ciao.cc
	  (1.16), GNU/ppl_gprolog_sd.cc (1.11), SICStus/sicstus_cfli.ic
	  (1.3), SWI/ppl_swiprolog.cc (1.56), XSB/ppl_xsb.cc (1.16),
	  YAP/ppl_yap.cc (1.50): Transition to C: avoid references.

2002-12-26 Thursday 11:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.15),
	  GNU/ppl_gprolog_sd.cc (1.10), SICStus/sicstus_cfli.h (1.2),
	  SICStus/sicstus_cfli.ic (1.2), SWI/ppl_swiprolog.cc (1.55),
	  XSB/ppl_xsb.cc (1.15), YAP/ppl_yap.cc (1.49): Transition to C:
	  avoid `bool'.

2002-12-26 Thursday 11:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.33), ppl_sicstus_sd.cc
	  (1.31), sicstus_cfli.cc (1.1), sicstus_cfli.h (1.1),
	  sicstus_cfli.ic (1.1): Started carving the new Common Foreign
	  Language Interface.

2002-12-25 Wednesday 19:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.74): Spurious element removed
	  from the `prolog_atoms' array.

2002-12-22 Sunday 09:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.51): Mention the bug fixed in
	  Polyhedron::minimized_constraints().

2002-12-22 Sunday 08:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.79): Version number bumped.

2002-12-21 Saturday 20:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.269), tests/topclosure1.cc (1.4): Corrected
	  the bug pointed out by topclosure1.cc.

2002-12-21 Saturday 20:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.73): In add_corresponding_points(), iteration
	  now goes upward to insert the new points in a partially ordered
	  sequence.

2002-12-21 Saturday 19:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.cc (1.8): Consistently follow "true" and "false" by a
	  full stop.

2002-12-21 Saturday 16:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: print.cc (1.7), print.hh (1.12): Removal of easy_print()
	  completed.

2002-12-21 Saturday 14:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.53), src/Status.cc (1.18),
	  src/initializer.hh (1.5), tests/ehandlers.cc (1.3): Prefer
	  anonymous namespaces to static declarations.

2002-12-21 Saturday 13:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.cc (1.6): The functions print_constraints() and
	  print_generators() were ignoring the `intro' argument.

2002-12-20 Friday 15:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/topclosure1.cc (1.3): Temporarily force NOISY to 1.

2002-12-20 Friday 15:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.cc (1.5): Avoid excess minimizations when printing
	  constraints or generators.

2002-12-20 Friday 15:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/boundingbox1.cc (1.30): Minor adjustments to expression
	  spacing; cutted away a few commented stmts.

2002-12-20 Friday 14:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/BBox.cc (1.2): Output functions greatly improved.

2002-12-19 Thursday 07:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.78): Version number bumped.

2002-12-18 Wednesday 20:10  Elisa Ricci

	* src/conversion.cc (1.41): The bug witnessed by the `polyhull10'
	  test program has been fixed: under some circumstances we were not
	  indicating that the matrix no longer had pending rows.

2002-12-17 Tuesday 19:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.166), polyhull10.cc (1.1): New test
	  showing a bug in the current version of the library.

2002-12-16 Monday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.21): Production of the documentation depends
	  also on ppl.sty.

2002-12-15 Sunday 20:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.165): The -lm flag for *randphull2 is in
	  addition to the other LDFLAGS.

2002-12-15 Sunday 19:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.164): The randphull2 and nnc_randphull2 test
	  programs need to be linked against the math library.

2002-12-15 Sunday 12:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/shuffledim1.cc (1.5): Define print_function() only when
	  noisy.

2002-12-15 Sunday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/randphull2.cc (1.3): Define M_PI unless it is already
	  defined.

2002-12-14 Saturday 21:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: limitedbbrz02widening1.cc (1.4),
	  limitedbhrz03widening1.cc (1.1): The new widening is now
	  nicknamed BHRZ03.

2002-12-14 Saturday 20:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: affineimage8.cc (1.4), affinepreimage10.cc (1.4): Use the
	  NOISY flag to control noisiness.

2002-12-14 Saturday 20:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: addconstraints13.cc (1.3), addgenerators12.cc (1.3),
	  affineimage8.cc (1.3), affinepreimage10.cc (1.3), boundingbox1.cc
	  (1.29), concatenate6.cc (1.3), constraints4.cc (1.3),
	  generators6.cc (1.3), intersection11.cc (1.3), polyhull9.cc
	  (1.3), relations19.cc (1.3), shuffledim1.cc (1.4), topclosure4.cc
	  (1.3): Use internal linkage when possible.

2002-12-14 Saturday 20:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Variable.cc (1.10): Variable::default_output_function()
	  improved.

2002-12-14 Saturday 18:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.50), doc/definitions.dox (1.104), interfaces/C/ppl_c.cc
	  (1.52), interfaces/C/ppl_c.h (1.53),
	  interfaces/Prolog/Prolog_interface.dox (1.71),
	  interfaces/Prolog/pl_check.pl (1.30),
	  interfaces/Prolog/ppl_prolog.icc (1.73),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.28),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.30),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.54),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.7),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.14),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.48), src/Polyhedron.cc
	  (1.268), src/Polyhedron.defs.hh (1.174), src/algorithms.hh
	  (1.12), tests/Makefile.am (1.163), tests/bbrz02widening1.cc
	  (1.5), tests/bbrz02widening10.cc (1.2), tests/bbrz02widening11.cc
	  (1.2), tests/bbrz02widening12.cc (1.4), tests/bbrz02widening13.cc
	  (1.7), tests/bbrz02widening14.cc (1.8), tests/bbrz02widening15.cc
	  (1.7), tests/bbrz02widening16.cc (1.2), tests/bbrz02widening17.cc
	  (1.2), tests/bbrz02widening18.cc (1.2), tests/bbrz02widening19.cc
	  (1.2), tests/bbrz02widening2.cc (1.3), tests/bbrz02widening3.cc
	  (1.3), tests/bbrz02widening4.cc (1.2), tests/bbrz02widening5.cc
	  (1.2), tests/bbrz02widening6.cc (1.4), tests/bbrz02widening7.cc
	  (1.4), tests/bbrz02widening8.cc (1.3), tests/bbrz02widening9.cc
	  (1.7), tests/bhrz03widening1.cc (1.1), tests/bhrz03widening10.cc
	  (1.1), tests/bhrz03widening11.cc (1.1), tests/bhrz03widening12.cc
	  (1.1), tests/bhrz03widening13.cc (1.1), tests/bhrz03widening14.cc
	  (1.1), tests/bhrz03widening15.cc (1.1), tests/bhrz03widening16.cc
	  (1.1), tests/bhrz03widening17.cc (1.1), tests/bhrz03widening18.cc
	  (1.1), tests/bhrz03widening19.cc (1.1), tests/bhrz03widening2.cc
	  (1.1), tests/bhrz03widening3.cc (1.1), tests/bhrz03widening4.cc
	  (1.1), tests/bhrz03widening5.cc (1.1), tests/bhrz03widening6.cc
	  (1.1), tests/bhrz03widening7.cc (1.1), tests/bhrz03widening8.cc
	  (1.1), tests/bhrz03widening9.cc (1.1), tests/exceptions1.cc
	  (1.28), tests/exceptions2.cc (1.22),
	  tests/limitedbbrz02widening1.cc (1.3): The new widening is now
	  nicknamed BHRZ03.

2002-12-06 Friday 07:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.57): Avoid totally useless
	  parentheses.	Make sure inline methods and functions are defined
	  before being used.

2002-12-05 Thursday 21:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.14), config.sub (1.13): Updated.

2002-12-05 Thursday 16:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.77): Bump version number.

2002-12-05 Thursday 16:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/minconstraints4.cc (1.5): Original testcase restored.

2002-12-05 Thursday 16:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: append1.cc (1.17), append2.cc (1.18), exceptions1.cc
	  (1.27), minconstraints4.cc (1.4), permute.cc (1.24),
	  removedim1.cc (1.8), removedim2.cc (1.12), removedim3.cc (1.8),
	  removedim6.cc (1.10), removedim7.cc (1.5), removedim8.cc (1.3):
	  Use PPL::Variables_Set instead of std::set<Variable>.

2002-12-05 Thursday 16:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.25), Determinate.inlines.hh (1.23),
	  Polyhedron.cc (1.267), Polyhedron.defs.hh (1.173),
	  PowerSet.defs.hh (1.23), PowerSet.inlines.hh (1.28),
	  Variable.defs.hh (1.28), Variable.inlines.hh (1.14): The function
	  bool operator<(const Variable&, const Variable&) has been
	  substituted by bool less(const Variable&, const Variable&).  New
	  predicate Variable::Compare useful for defining associative
	  containers of variables.  New typedef Variables_Set standing for
	  std::set<Variable, Variable::Compare>.  Use PPL::Variables_Set
	  instead of std::set<Variable>.

2002-12-05 Thursday 16:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/: C/ppl_c.cc (1.51), Prolog/ppl_prolog.icc (1.72): Use
	  PPL::Variables_Set instead of std::set<Variable>.

2002-12-05 Thursday 12:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* TODO (1.28): Added an item about strong minimization.

2002-12-05 Thursday 12:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.266): In
	  Polyhedron::strongly_minimize_constraints(), corrected the bug
	  spotted by test minconstraints4.cc.

2002-12-05 Thursday 12:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/minconstraints4.cc (1.3): Further simplified the test
	  showing the bug.

2002-12-05 Thursday 10:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/minconstraints4.cc (1.2): Simplified the test showing the
	  bug in the strong minimization of constraints.

2002-12-05 Thursday 08:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.162), minconstraints4.cc (1.1): New test
	  showing a bug triggered by an invocation of
	  Polyhedron::minimized_constraints().

2002-12-03 Tuesday 20:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.cc (1.56), src/ConSys.defs.hh (1.75),
	  src/ConSys.inlines.hh (1.28), src/GenSys.cc (1.72),
	  src/GenSys.defs.hh (1.86), src/GenSys.inlines.hh (1.29),
	  src/Matrix.cc (1.45), src/Matrix.defs.hh (1.39),
	  src/Matrix.inlines.hh (1.28), src/Polyhedron.cc (1.265),
	  src/Polyhedron.defs.hh (1.172), src/Polyhedron.inlines.hh (1.56),
	  src/Status.cc (1.17), src/Status.defs.hh (1.24),
	  src/Status.inlines.hh (1.11), src/conversion.cc (1.40),
	  src/minimize.cc (1.27), src/simplify.cc (1.21), tests/Makefile.am
	  (1.161), tests/addconstraints13.cc (1.2),
	  tests/addgenerators12.cc (1.2), tests/affineimage8.cc (1.2),
	  tests/affinepreimage10.cc (1.2), tests/boundingbox1.cc (1.28),
	  tests/bug1.cc (1.3), tests/bug1.dat (1.2), tests/concatenate6.cc
	  (1.2), tests/constraints4.cc (1.2), tests/generators6.cc (1.2),
	  tests/intersection11.cc (1.2), tests/polyhull9.cc (1.2),
	  tests/relations19.cc (1.2), tests/timeelapse8.cc (1.2),
	  tests/topclosure4.cc (1.2): The `lazy' branch has been merged.

2002-12-03 Tuesday 11:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.264): Fixed a couple of comments.

2002-12-02 Monday 18:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc, Polyhedron.inlines.hh (lazy.[12,12]): A
	  whole pass on the code of the class, trying to use the new
	  methods defined for the handling of pending rows; also tried to
	  provide more uniform comments and to avoid useless reordering of
	  rows when invoking add_and_minimize().

2002-12-02 Monday 18:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (lazy.4): Modified methods
	  add_corresponding_points() and add_corr_closure_points() to rely
	  on the caller for the management of pending rows.

2002-12-02 Monday 18:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (lazy.3): Modified method
	  adjust_topology_and_dimensions() to rely on the caller for the
	  management of pending rows.

2002-12-02 Monday 18:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh, minimize.cc (lazy.[7,4]): Provided
	  slightly better names for methods dealing with pending rows.
	  Modified the assertions for the two methods named
	  add_and_minimize(...) and added new documentation.

2002-12-02 Monday 18:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (lazy.8): No longer using flag
	  KEEP_SOURCE_SORTEDNESS.

2002-12-02 Monday 18:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (lazy.10): Corrected a typo in
	  add_pending_rows(const Matrix&).  Removed an ill-placed
	  well-formedness check.  Adjusted a few assertions.

2002-12-02 Monday 09:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc, Matrix.defs.hh, Matrix.inlines.hh
	  (lazy.[9,7,3]): Added new method unset_pending_rows() that sets
	  the index_first_pending_row equal to the number of rows of the
	  matrix.  Added new methods add_rows(const Matrix&) and
	  add_pending_rows(const Matrix&) to add a set of rows with one
	  matrix reallocation at most.	Adjusted a few comments.  Factored
	  some common code in the sorting methods.

2002-11-30 Saturday 11:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ciao_clpq.pl (1.3): No longer use the
	  debug package: use the debugger library instead.  Added
	  use_module(library(prolog_sys)) in order to use statistics/0.

2002-11-29 Friday 20:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.39): Committed to preserving the sortedness
	  of `source', but changed the name of the new index, now using
	  `source_num_redundant'.  Using a reference instead of evaluating
	  source[k] many times.

2002-11-29 Friday 11:51  Elisa Ricci

	* src/: Matrix.cc, Matrix.defs.hh, Polyhedron.cc,
	  Polyhedron.defs.hh, Polyhedron.inlines.hh, conversion.cc,
	  minimize.cc (lazy.[8,6,11,6,11,7,3]): Added
	  Matrix::sort_rows(dimension_type first_row, dimension_type
	  last_row) that sorts the the part of the matrix that is between
	  `first_row' and `last_row'. Added also
	  Matrix::sort_pending_and_remove_duplicates() that sorts the
	  pending part of the matrix and remove the pending rows that are
	  also in the upper part of the matrix.  Added
	  Polyhedron::remove_pending_constraints_and_minimize() and
	  Polyhedron::remove_pending_generators_and_minimize() that remove
	  pending constraints/generators and minimize the polyhedron: now
	  Polyhedron::remove_pending_and_minimze() only calls the two added
	  methods.  Added also Polyhedron::add_and_minimize(bool, Matrix&,
	  Matrix&, SatMatrix&) to obtain a polyhedron in minimal form
	  defined by the system composed by the non-pending rows and by the
	  pending rows of the first matrix.  This new method is called by
	  Polyhedron::add_and_minimize(bool, Matrix&, Matrix&, SatMatrix&,
	  const Matrix&) after We have added the row of the constant matrix
	  to the first matrix.	Changed conversion so that when we swap the
	  rows of source we set a flag and at the end we verify if the
	  matrix is really sorted or not.

2002-11-29 Friday 11:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.27): We should not forget to document
	  Polyhedron::shuffle_dimensions().

2002-11-29 Friday 10:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (lazy.6): The management of flag
	  KEEP_SOURCE_SORTEDNESS reported into the branch lazy.

2002-11-29 Friday 10:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.38): Implemented a more efficient way to
	  keep the sortedness of Matric `source', requiring max
	  source_num_rows - 1 swaps of the rows in source.  The new code is
	  controlled by pre-proc flag KEEP_SOURCE_SORTEDNESS, which is now
	  set to 0 (i.e., still using old code).

2002-11-28 Thursday 18:22  Elisa Ricci

	* src/: SatMatrix.cc (1.24), SatMatrix.defs.hh (1.28), minimize.cc
	  (1.26): Restored SatMatrix::transpose() and used it in
	  add_and_minimize(), where it is possible, instead of
	  SatMatrix::transpose_assign().  When we use add_row(), it sets
	  correctly if the changed matrix is sorted or not: so we have not
	  to say in add_and_minimize() that the changed matrix is not
	  sorted.  In add_and_minimize(), after adding the new rows to the
	  matrix `source1', we resize the saturation matrix `sat' instead
	  of built a temporary saturation matrix.

2002-11-28 Thursday 14:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.37): Added (a preprocessing controlled and
	  now disabled) alternative code for the removal of rows in Matrix
	  `source' that are found to be redundant.  The alternative code
	  does keep the sortedness of `source'.

2002-11-28 Thursday 14:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (lazy.5): Added (a preprocessing controlled and
	  now disabled) alternative code for the removal of rows in Matrix
	  source that are found to be redundant.  The alternative code does
	  keep the sortedness of source.

2002-11-27 Wednesday 19:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.42), Poly_Con_Relation.cc (1.6),
	  Poly_Gen_Relation.cc (1.6): Added missing \relates needed by
	  Doxygen.

2002-11-27 Wednesday 18:10  Elisa Ricci

	* src/conversion.cc (lazy.4): Improve the last part of conversion:
	  now we check if the sorted matrix `dest' is really sorted and
	  then we update `index_first_pending' of `dest'.

2002-11-27 Wednesday 16:19  Elisa Ricci

	* src/conversion.cc (lazy.3): Improved the part in which we update
	  `index_first_pending' of `dest'.

2002-11-27 Wednesday 13:15  Elisa Ricci

	* src/: Matrix.defs.hh, Matrix.cc, conversion.cc (lazy.[5,7,2]):
	  Now we have Matrix::add_pending_row(Row::Type type) instead of
	  Matrix::add_row(Row::Type type). This new method does not change
	  `index_first_pending' and does not verify the sortedness of the
	  matrix.  Used this new method in conversion.	At the end of
	  conversion, we update the sortedness of `dest' and its
	  `index_first_pending'.

2002-11-27 Wednesday 11:45  Elisa Ricci

	* src/minimize.cc (lazy.2): When we use add_row(), it sets
	  correctly if the changed matrix is sorted or not: so we do not
	  say in add_and_minimize() that then the vhanged matrix is not
	  sorted.  In add_and_minimize(), after adding the new rows to the
	  matrix `source1', we resize the saturation matrix `sat' instead
	  of built a temporary saturation matrix.  In add_and_minimize(),
	  also used SatMatrix::transpose() where it is possible instead of
	  SatMatrix::transpose_assign().

2002-11-27 Wednesday 11:21  Elisa Ricci

	* tests/shuffledim1.cc (1.3): Added a test to verify
	  Polyhedron::shuffle_dimensions() in the case that the polyhedron
	  is zero-dimensional.

2002-11-26 Tuesday 17:51  Elisa Ricci

	* tests/shuffledim1.cc (1.2): Added void print_function() that is
	  used to print a function in this test.  Added also other tests to
	  verify Polyhedron::shuffle_dimensions().

2002-11-26 Tuesday 17:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.cc (1.4): Fixed a bug whereby universe polyhedra were
	  sometimes wrongly printed.

2002-11-26 Tuesday 17:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.160), PFunction.cc (1.1), PFunction.hh
	  (1.1), shuffledim1.cc (1.1): To test
	  Polyhedron::shuffle_dimensions().

2002-11-26 Tuesday 16:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.263), SatRow.cc (1.16), SatRow.defs.hh
	  (1.24), SatRow.inlines.hh (1.21), conversion.cc (1.36),
	  simplify.cc (1.20): New functions bool subset_or_equal(const
	  SatRow&, const SatRow&) and bool strict_subset(const SatRow&,
	  const SatRow&) replace the misleading overloadings of the
	  comparison operators `<', `<=', `>' and `>=' on SatRow's.

2002-11-26 Tuesday 10:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatRow.cc (lazy.1): From the main trunk: fixed int
	  compare(const SatRow&, const SatRow&), bool operator<=(const
	  SatRow&, const SatRow&), and bool operator<(const SatRow&, const
	  SatRow&).

2002-11-26 Tuesday 10:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatRow.cc (1.15): Fixed int compare(const SatRow& x, const
	  SatRow& y), bool operator<=(const SatRow& x, const SatRow& y),
	  and bool operator<(const SatRow& x, const SatRow& y): they were
	  completely broken.

2002-11-25 Monday 15:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (lazy.6): Fixed a bug in Matrix::grow() whereby,
	  depending on the relations between the new rows' size and the old
	  row's capacity, index_first_pending could erroneously be set to
	  zero.

2002-11-25 Monday 11:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.32): Properly install
	  ppl_sicstus.so.

2002-11-25 Monday 09:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh, GenSys.defs.hh, Matrix.defs.hh
	  (lazy.[3,4,4]): Added more details in the documentation for the
	  split constructors.

2002-11-25 Monday 09:25  Elisa Ricci

	* src/: Matrix.cc, Polyhedron.cc (lazy.[5,10]): Corrected the bug
	  in Matrix::ascii_load: we used "nrows" instead of "index", when
	  we set the "index_first_pending".  In Matrix::add_row, erased in
	  a condition of an "if" erased the check about the number of
	  pending rows, because we use this method only when the matrix has
	  no pending rows.  In Polyhedron::Polyhedron(Topology topol,
	  ConSys& cs) and Polyhedron::Polyhedron(Topology topol, const
	  ConSys& cs) erased an "if" that is repeated twice.

2002-11-24 Sunday 19:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug1.cc, bug1.dat (lazy.[4,1,1]): New test
	  program (with input data) meant to witness the existence of a bug
	  in Polyhedron::concatenate_assign().	Unfortunately, it shows
	  that there are also problems in Polyhedron::ascii_dump() and/or
	  Polyhedron::ascii_load().

2002-11-24 Sunday 14:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc, Polyhedron.defs.hh (lazy.[9,5]): Using the
	  new split constructor to implement remove_pending_and_minimize().

2002-11-24 Sunday 14:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh, ConSys.inlines.hh, GenSys.defs.hh,
	  GenSys.inlines.hh, Matrix.cc, Matrix.defs.hh
	  (lazy.[2,1,3,1,4,3]): Added split constructors for Matrix, ConSys
	  and GenSys.

2002-11-23 Saturday 12:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.31): Use libtool
	  whenever possible.

2002-11-23 Saturday 09:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.52): Include <stdio.h> before <gmp.h> so
	  as to avoid warnings about the implicit declaration of all the
	  I/O functions.

2002-11-22 Friday 17:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/disjoint2.cc (1.3): Be quiet.

2002-11-22 Friday 15:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.11): Practice information hiding.

2002-11-22 Friday 12:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: affinepreimage9.cc (1.2), append1.cc (1.16), append2.cc
	  (1.17), ascii_dump_load1.cc (1.10), ascii_dump_load2.cc (1.8),
	  ascii_dump_load3.cc (1.11), ascii_dump_load4.cc (1.11),
	  ascii_dump_load5.cc (1.7), ascii_dump_load6.cc (1.4),
	  ascii_dump_load7.cc (1.4), bbrz02widening1.cc (1.4),
	  bbrz02widening12.cc (1.3), bbrz02widening13.cc (1.6),
	  bbrz02widening14.cc (1.7), bbrz02widening15.cc (1.6),
	  bbrz02widening9.cc (1.6), boundingbox1.cc (1.27), boundingbox2.cc
	  (1.15), boundingbox3.cc (1.6), boundingbox4.cc (1.3),
	  disjoint2.cc (1.2), disjoint3.cc (1.2), exceptions1.cc (1.26),
	  exceptions2.cc (1.21), files.cc (1.3),
	  generalizedaffineimage10.cc (1.3), generalizedaffineimage11.cc
	  (1.2), generalizedaffineimage7.cc (1.4),
	  generalizedaffineimage9.cc (1.2), intersection10.cc (1.2),
	  intersection2.cc (1.6), limitedh79widening4.cc (1.2),
	  linearpartition1.cc (1.7), linearpartition2.cc (1.7),
	  linearpartition3.cc (1.7), memory1.cc (1.17), operator1.cc (1.2),
	  permute.cc (1.23), polydifference7.cc (1.2), polyhull8.cc (1.2),
	  randphull1.cc (1.6), randphull2.cc (1.2), relations17.cc (1.4),
	  relations9.cc (1.9), smm1.cc (1.11), watchdog1.cc (1.14),
	  writeconsys1.cc (1.4), writegensys1.cc (1.5), writegensys2.cc
	  (1.5), writegensys3.cc (1.4), writepolyhedron1.cc (1.4),
	  writepolyhedron2.cc (1.5), writepolyhedron3.cc (1.4),
	  writerelation1.cc (1.4), writevariable1.cc (1.4): Consistency
	  improvements.

2002-11-22 Friday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/files.hh (1.3): Include <iostream> instead of <iosfwd>.

2002-11-22 Friday 11:54  Elisa Ricci

	* src/Matrix.inlines.hh (lazy.2): Added the assertion
	  "assert(num_rows() >= first_pending_row())" in
	  Matrix::num_pending_rows().

2002-11-22 Friday 10:23  Elisa Ricci

	* src/: ConSys.cc, GenSys.cc, Matrix.cc, Polyhedron.cc,
	  Polyhedron.inlines.hh (lazy.[2,3,3,8,10]): Added some comments to
	  explain the case in which the polyhedron has something pending.
	  Added some assertions to verify that a method is not used in
	  wrong cases.

2002-11-22 Friday 10:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.defs.hh (1.24): Teo declarations uncommented.

2002-11-22 Friday 09:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.51): Declarations of ppl_ConSys_begin()
	  and ppl_ConSys_end() fixed.

2002-11-22 Friday 09:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/ppl_test.hh (1.2): Copyright notice added.

2002-11-22 Friday 09:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/ehandlers.cc (1.2): Include ehandlers.hh.

2002-11-22 Friday 09:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.76): Bump version number.

2002-11-21 Thursday 18:18  Elisa Ricci

	* src/: ConSys.cc, ConSys.defs.hh, GenSys.cc, GenSys.defs.hh,
	  Matrix.cc, Matrix.defs.hh, Polyhedron.cc, Polyhedron.defs.hh,
	  Polyhedron.inlines.hh, conversion.cc, minimize.cc, simplify.cc
	  (lazy.[1,1,2,2,2,2,7,4,9,1,1,1]): Added the methods
	  Matrix::add_pending_row(), Matrix::insert_pending(),
	  GenSys::insert_pending() and ConSys::insert_pending().  Erased
	  the matrices `pending_cs' and `pending_gs' from polyhedron: now
	  if the polyhedron has pending constraints/generators, they are in
	  con_sys/gen_sys.  Modified the methods of Polyhedron, ConSys,
	  GenSys and Matrix so that they always consider if the polyhedron
	  contains something pending or if the matrix has some pending
	  rows.

2002-11-20 Wednesday 12:38  Elisa Ricci

	* tests/: Makefile.am (1.159), disjoint2.cc (1.1), disjoint3.cc
	  (1.1): Added new tests to verify are_disjoint(const Polyhedron&
	  x, const Polyhedron& y).

2002-11-15 Friday 16:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.158), intersection2.cc (1.5),
	  randphull1.cc (1.5), randphull2.cc (1.1): New test computing
	  random polytopes by generating points on the surface of an
	  n-dimensional sphere.

2002-11-15 Friday 12:58  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.29), ppl_prolog.icc (1.71):
	  Bug in term_to_complexity_class/2 corrected (a_empty changed to
	  a_any).  Tests for ppl_Polyhedron_get_bounding_box/3 added to
	  pl_check.pl.

2002-11-15 Friday 12:31  Elisa Ricci

	* src/: Matrix.cc, Matrix.defs.hh, Matrix.inlines.hh
	  (lazy.[1,1,1]): Started to insert the pending system into the
	  matrix.

2002-11-15 Friday 09:17  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.70): Added
	  documentation for the complexity classes allowed in
	  ppl_Polyhedron_get_bounding_box/3

2002-11-14 Thursday 10:30  Elisa Ricci

	* src/Polyhedron.inlines.hh (lazy.8): Erased a repeated comment.

2002-11-14 Thursday 10:14  Elisa Ricci

	* src/Polyhedron.cc, tests/topclosure4.cc (lazy.[6,2]): Improved
	  Polyhedron::topological_closure_assign() in the case that the
	  polyhedron has pending constraints.  Typo fixed in the test.

2002-11-14 Thursday 09:43  Elisa Ricci

	* src/Polyhedron.inlines.hh, tests/boundingbox1.cc (lazy.[7,1]):
	  Corrected an error in Polyhedron::shrink_bounding_box(Box& box,
	  Complexity_Class complexity).  Added two tests to verify this
	  method. In boundingbox1.cc, corrected also test10 that did not
	  verify if the resulting box computed using POLYNOMIAL were equal
	  to the "known_pbox".

2002-11-13 Wednesday 18:51  Elisa Ricci

	* tests/: Makefile.am, topclosure4.cc (lazy.[3,1]): Added a new
	  test to verify Polyhedron::topological_closure_assign().

2002-11-13 Wednesday 18:50  Elisa Ricci

	* src/: Polyhedron.cc, Polyhedron.inlines.hh (lazy.[5,6]): Improved
	  Polyhedron::intersection_assign(),
	  Polyhedron::poly_hull_assign(), Polyhedron::add_generator(),
	  Polyhedron::add_constraint(), Polyhedron::concatenate_assign(),
	  Polyhedron::add_constraints(), Polyhedron::add_generators() and
	  modified Polyhedron::topological_closure_assign() and
	  Polyhedron::shrink_bounding_box(Box& box, Complexity_Class
	  complexity) in the case in which the polyhedra can have something
	  pending.

2002-11-13 Wednesday 18:43  Elisa Ricci

	* src/: GenSys.cc, GenSys.defs.hh (lazy.[1,1]): Added the method
	  add_corresponding_points(const GenSys& gs) that add to *this the
	  "corresponding point of the closure points of "gs" and of *this".

2002-11-13 Wednesday 10:58  Elisa Ricci

	* tests/: Makefile.am, addconstraints13.cc, addgenerators12.cc,
	  affineimage8.cc, affinepreimage10.cc, relations19.cc,
	  timeelapse8.cc (lazy.[2,2,1,1,1,1,1]): Added some other tests
	  that verify the methods Polyhedron::add_generators(),
	  Polyhedron::add_generators_and_minimize(),
	  Polyhedron::affine_image(), Polyhedron::affine_preimage(),
	  Polyhedron::relation_with() and Polyhedron::time_elapse_assign()
	  in the case in which the polyhedra can have something pending.

2002-11-13 Wednesday 10:49  Elisa Ricci

	* src/Polyhedron.cc (lazy.4): Improved Polyhedron::is_bounded() and
	  Polyhedron::bounds().  Corrected
	  Polyhedron::is_topologically_closed().

2002-11-13 Wednesday 09:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.28): pl_check.pl now avoids
	  unifying terms with constraint and generator systems.

2002-11-12 Tuesday 17:32  Elisa Ricci

	* tests/: Makefile.am, addconstraints13.cc, concatenate6.cc,
	  constraints4.cc, generators6.cc, intersection11.cc, polyhull9.cc
	  (lazy.[1,1,1,1,1,1,1]): Added some new tests that verify the case
	  in which the polyhedron can have something pending.

2002-11-12 Tuesday 17:30  Elisa Ricci

	* src/: Polyhedron.cc, Polyhedron.inlines.hh (lazy.[3,5]): Improved
	  operator<=(x, y) and Polyhedron::concatenate_assign(y) in the
	  case that the polyhedra have something pending.

2002-11-12 Tuesday 16:21  Elisa Ricci

	* src/Polyhedron.inlines.hh (lazy.4): Considered the case of a
	  polyhedron that has something pending in
	  Polyhedron::shrink_bounding_box(Box& box, Complexity_Class
	  complexity) and in Polyhedron::shuffle_dimensions(const
	  PartialFunction& pfunc).

2002-11-12 Tuesday 11:52  Elisa Ricci

	* src/: Polyhedron.cc, Polyhedron.defs.hh, Polyhedron.inlines.hh
	  (lazy.[2,3,3]): Improved the case of pending system in
	  Polyhedron::generators() and Polyhedron::minimize() and
	  Polyhedron::intersection_assign().  Corrected operator<= in the
	  case that one of the two polyhedra have something pending.  Added
	  the method Polyhedron::can_have_something_pending().	Considered
	  the case of pending constraints or pending generators in
	  concatenate_assign(), poly_hull_assign(),
	  poly_hull_assign()_and_minimize, add_dimension_and_embed(),
	  add_dimensions_and_project, remove_dimensions()
	  remove_higher_dimensions, in all the methods that are used to add
	  constraints and generators, in affine_image() and
	  affine_preimage, in time_elapse_assign(), in check_universe(), in
	  is_bounded() and bounds(), in is_topologically_closed() and in
	  topological_closure_assign(), in Polyhedron::swap() and in
	  Polyhedron(Topology topol, const Box& box).

2002-11-12 Tuesday 10:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.26): Revised the section on urgent things to do.

2002-11-12 Tuesday 10:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.69), pl_check.pl
	  (1.27), ppl_prolog.icc (1.70), Ciao/ppl_ciao.pl (1.27),
	  SICStus/ppl_sicstus_sd.cc (1.29), SWI/ppl_swiprolog.cc (1.53),
	  XSB/ppl_xsb.H (1.6), XSB/ppl_xsb.cc (1.13), YAP/ppl_yap.cc
	  (1.47): Implemented ppl_Polyhedron_get_bounding_box/3.

2002-11-10 Sunday 17:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.16): Do not try to run the real test on
	  Cygwin since the implementation of setrlimit() there is a dummy
	  one.

2002-11-10 Sunday 11:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.11): Allow to build in the
	  sources' directory.

2002-11-10 Sunday 09:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/.cvsignore (1.4), tests/.cvsignore (1.7):
	  Ignore more generated files.

2002-11-09 Saturday 22:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.15): The LIMIT macro has been fixed.

2002-11-08 Friday 18:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: Makefile.am (1.13), ciao_clpq.pl (1.2):
	  Completed.

2002-11-08 Friday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.cc (1.14): Fixed two critical
	  bugs.

2002-11-08 Friday 12:20  Elisa Ricci

	* src/: Polyhedron.cc, Polyhedron.defs.hh, Polyhedron.inlines.hh
	  (lazy.[1,2,2]): Added to a polyhedron the system of pending
	  constraints and the system of pending generators.  Added the
	  methods that set the flags used for the pending systems and
	  Polyhedron::remove_pending_and_minimize(),
	  Polyhedron::remove_pending_to_obtain_constraints() and
	  Polyhedron::remove_pending_to_obtain_generators().  Started to
	  consider the pending systems and in particular used them
	  operator<=(x, y), Polyhedron::intersection_assign_and_minimize(y)
	  and Polyhedron::intersection_assign(y).

2002-11-08 Friday 12:13  Elisa Ricci

	* src/Status.cc (lazy.2): Modified Status::OK() so that it also
	  verify if the polyhedron has both pending constraints and pending
	  generators.

2002-11-08 Friday 12:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.12): Added missing patterns
	  to MOSTLYCLEANFILES.

2002-11-08 Friday 10:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: ascii_dump_load3.cc (1.10), ascii_dump_load4.cc (1.10),
	  ascii_dump_load5.cc (1.6), ascii_dump_load6.cc (1.3): Be noisy
	  when NOISY.

2002-11-08 Friday 10:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/ascii_dump_load7.cc (1.3): Comment fixed.

2002-11-08 Friday 10:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.11): Add fake_main.pl and
	  ciao_clpq.pl to EXTRA_DIST.

2002-11-07 Thursday 18:32  Elisa Ricci

	* src/: Polyhedron.defs.hh, Polyhedron.inlines.hh, Status.cc,
	  Status.defs.hh, Status.inlines.hh (lazy.[1,1,1,1,1]): Added in
	  the Status the flags that say if the polyhedron has something
	  pending. Added the methods that check these flags.

2002-11-07 Thursday 16:45  Elisa Ricci

	* src/: SatMatrix.cc (1.23), SatMatrix.defs.hh (1.27),
	  SatMatrix.inlines.hh (1.17): Erased SatMatrix::transpose(),
	  operator==(const SatMatrix& x, const SatMatrix& y) and
	  operator!=(const SatMatrix& x, const SatMatrix& y), because they
	  were never used.

2002-11-07 Thursday 16:04  Elisa Ricci

	* src/Polyhedron.cc (1.262): Corrected the bug: we printed "sat_c"
	  twice instead of "sat_c" and "sat_g".

2002-11-07 Thursday 15:41  Elisa Ricci

	* tests/ascii_dump_load7.cc (1.2): Simplify the test that shows the
	  bug.

2002-11-07 Thursday 15:35  Elisa Ricci

	* tests/: Makefile.am (1.157), ascii_dump_load7.cc (1.1): This test
	  shows a bug: we have a polyhedron with sat_g up-to-date but sat_g
	  is dimensional incompatible with con_sys.

2002-11-07 Thursday 15:20  Elisa Ricci

	* tests/ascii_dump_load6.cc (1.2): Added two other tests to verify
	  Status::ascii_dump() and Status::ascii_load().

2002-11-06 Wednesday 19:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: ascii_dump_load3.cc (1.9), ascii_dump_load4.cc (1.9):
	  Added missing calls to seekp() where input was immediately
	  followed by output on a stream open in read/write mode.

2002-11-06 Wednesday 07:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.25): Added a few things to do rather urgently.

2002-11-05 Tuesday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/watchdog1.cc (1.13): Missing return statement added.

2002-11-05 Tuesday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.14): Missing return statement added.

2002-11-05 Tuesday 16:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/ac_check_gmp.m4 (1.10): Detection of sizeof(mp_limb_t) fixed.

2002-11-05 Tuesday 14:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.13): The custom allocation functions must
	  have C linkage.

2002-11-05 Tuesday 14:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/mc91.cc (1.9): Do not refer to the AskTell class.

2002-11-05 Tuesday 14:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.23), PowerSet.defs.hh (1.22),
	  PowerSet.inlines.hh (1.27): Include the required files.

2002-11-05 Tuesday 14:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.54): The AskTell constraint system class is
	  nowhere near maturity: will not be distributed for the time
	  being.

2002-11-05 Tuesday 12:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.75): Check whether the C++ compiler supports
	  flexible array only after having set CXXFLAGS.

2002-11-05 Tuesday 12:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/: ac_check_gmp.m4 (1.9), ac_cxx_flexible_arrays.m4 (1.4): More
	  quoting where needed.

2002-11-05 Tuesday 11:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.cc (1.6), Watchdog.defs.hh (1.8): Standard
	  conformance fixes.

2002-11-05 Tuesday 10:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.8): Updated.

2002-11-05 Tuesday 10:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/configure.ac (1.13): Work around a bug in AC_CHECK_FUNCS
	  as implemented in autoconf 2.54c and previous versions.  For more
	  information, see
	  http://www.cs.unipr.it/pipermail/ppl-devel/2002-November/002929.html.

2002-11-05 Tuesday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.74), Watchdog/configure.ac (1.12),
	  m4/ac_check_gmp.m4 (1.8), m4/ac_cxx_flexible_arrays.m4 (1.3):
	  Avoid using obsolete macros.

2002-11-05 Tuesday 09:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.73), m4/ac_check_gmp.m4 (1.7),
	  m4/ac_cxx_flexible_arrays.m4 (1.2): Avoid using obsolete macros.

2002-11-05 Tuesday 09:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.12): Warning avoided, FIXME
	  added.

2002-11-05 Tuesday 09:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/smm1.cc (1.10): Extend the Parma_Polyhedra_Library
	  namespace with the output operators before using STL stream
	  iterators.

2002-11-05 Tuesday 00:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.55), ConSys.defs.hh (1.74), ConSys.inlines.hh
	  (1.27), GenSys.cc (1.71), GenSys.defs.hh (1.85), Matrix.defs.hh
	  (1.38): We were violating the C++ standard by referring to
	  unaccessible base classes.

2002-11-04 Monday 17:28  Elisa Ricci

	* tests/: Makefile.am (1.156), affineimage7.cc (1.1),
	  affinepreimage9.cc (1.1), ascii_dump_load4.cc (1.8),
	  ascii_dump_load5.cc (1.5), ascii_dump_load6.cc (1.1): Added tests
	  to verify ascii_dump() and ascii_load() of SatMatrix and of
	  Status and to verify Polyhedron::affine_image() and
	  Polyhedron::affine_preimage() with a negative denominator.

2002-11-04 Monday 12:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.55): Reposition a declaration that
	  was moved by mistake.

2002-11-04 Monday 12:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: Makefile.am (1.10), ciao_clpq.pl (1.1):
	  Little progress in the Ciao-Prolog interface.

2002-11-04 Monday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.54): Improved comments for
	  Polyhedron::shrink_bounding_box().

2002-11-04 Monday 11:36  Elisa Ricci

	* src/Polyhedron.inlines.hh (1.53): In
	  Polyhedron::shrink_bounding_box() added the comment that explains
	  why we change the sign of `n' when we built the ExtendedRational
	  `r`.

2002-11-04 Monday 10:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.52): Avoid taking references to
	  temporary GMP expressions.  FIXME about a missing comment added.

2002-11-04 Monday 09:34  Elisa Ricci

	* tests/: boundingbox3.cc (1.5), boundingbox4.cc (1.2): Modified
	  these tests so that they also verify
	  Polyhedron::shrink_bounding_box(box, POLYNOMIAL).

2002-11-04 Monday 08:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.261): Avoid some useless copies.

2002-11-03 Sunday 23:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.260): Avoid taking references to temporary
	  GMP expressions.

2002-11-03 Sunday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.155), ascii_dump_load1.cc (1.9),
	  ascii_dump_load2.cc (1.7), ascii_dump_load3.cc (1.8),
	  ascii_dump_load4.cc (1.7), ascii_dump_load5.cc (1.4): Be
	  consistent in naming files.

2002-11-03 Sunday 17:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.46), Row.inlines.hh (1.34): Progress in
	  supporting compilers that do not provide flexible arrays.

2002-11-03 Sunday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.68),
	  interfaces/Prolog/GNU/Makefile.am (1.24), m4/ac_check_gmp.m4
	  (1.6): For the sake of not very smart linkers, link with `-lgmpxx
	  -lgmp' instead of the other way around.

2002-11-03 Sunday 11:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: ascii_dump_load1.cc (1.8), ascii_dump_load2.cc (1.6),
	  ascii_dump_load3.cc (1.7), ascii_dump_load4.cc (1.6),
	  ascii_dump_load5.cc (1.3), linearpartition1.cc (1.6),
	  linearpartition2.cc (1.6), linearpartition3.cc (1.6), memory1.cc
	  (1.12), writeconsys1.cc (1.3), writegensys1.cc (1.4),
	  writegensys2.cc (1.4), writegensys3.cc (1.3), writepolyhedron1.cc
	  (1.3), writepolyhedron2.cc (1.4), writepolyhedron3.cc (1.3),
	  writerelation1.cc (1.3), writevariable1.cc (1.3): Be consistent
	  as far as inclusions are concerned.

2002-11-03 Sunday 11:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/pwl_header.middle (1.2): Include sys/time.h, if
	  available.

2002-11-03 Sunday 10:56  Elisa Ricci

	* tests/: Makefile.am (1.154), boundingbox3.cc (1.4),
	  boundingbox4.cc (1.1): Erased form boundingbox3.cc the flags
	  "C_TESTS" and "NNC_TESTS".  boundingbox3.cc now contains only
	  tests with C_Polyhedron; the tests that were in boundingbox3.cc
	  and that contain polyhedron described by strict inequalities now
	  are in boundingbox4.cc.

2002-11-03 Sunday 09:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.10): Always use the current
	  C++ compiler, not simply `g++'.

2002-11-03 Sunday 09:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.defs.hh (1.7), Watchdog.inlines.hh (1.6):
	  Little cleaning.

2002-11-03 Sunday 09:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: config.h.in (1.3), configure.ac (1.11): Get rid of
	  AC_C_INLINE: we do not use inlines in C code and it was doing
	  harm with some compilers.

2002-11-02 Saturday 23:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.50), ppl_c.h (1.50): The function
	  ppl_Polyhedron_shrink_bounding_box() has now a parameter allowing
	  the selection of the desired complexity class.

2002-11-02 Saturday 23:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.25): Spurious line removed.

2002-11-02 Saturday 22:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.9): Can now compile the
	  Ciao-Prolog interface.

2002-11-02 Saturday 20:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.26): Properly declare all
	  the predicates.

2002-11-02 Saturday 20:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.11): Uninitialized variable
	  bug fixed.

2002-11-02 Saturday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/configure.ac (1.10): Buggy conditional fixed.

2002-11-02 Saturday 16:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: adddimensions11.cc (1.2), addgenerators11.cc (1.3),
	  exceptions1.cc (1.25), exceptions2.cc (1.20): Avoid inventing
	  non-existing standard exceptions.

2002-11-02 Saturday 11:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.171), src/Polyhedron.inlines.hh (1.51),
	  src/globals.hh (1.24), tests/boundingbox1.cc (1.26),
	  tests/boundingbox2.cc (1.14): New enum Complexity_Class to
	  represent complexity classes.  Polyhedron::shrink_bounding_box()
	  now takes a complexity class, defaulting to ANY, instead of a
	  bool.

2002-11-02 Saturday 10:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.49): Mention the bug fixed in operator-=(LinExpression&,
	  const LinExpression&).

2002-11-02 Saturday 09:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.22), configure.ac (1.72): Get rid of AC_C_INLINE:
	  we do not use inlines in C code and it was doing harm with some
	  compilers.

2002-11-01 Friday 20:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.21), configure.ac (1.71), m4/ac_check_gmp.m4
	  (1.5): Much improved detection of the size of GMP's mp_limb_t.

2002-11-01 Friday 18:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatRow.cc (1.14), SatRow.defs.hh (1.23): Got rid of
	  operator<<(std::ostream&, const SatRow&).

2002-11-01 Friday 18:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.73), Constraint.defs.hh (1.77),
	  GenSys.defs.hh (1.84), Generator.defs.hh (1.80),
	  Poly_Con_Relation.defs.hh (1.18), Poly_Gen_Relation.defs.hh
	  (1.17), Polyhedron.defs.hh (1.170), Variable.defs.hh (1.27):
	  Correctly relate the output operators to the corresponding
	  classes.

2002-11-01 Friday 18:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.24): There must be a more efficient way to implement bool
	  are_disjoint(const Polyhedron&, const Polyhedron&).

2002-11-01 Friday 18:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: NNCminimize1.cc (1.7), NNCminimize2.cc (1.7),
	  NNCminimize3.cc (1.7), NNCminimize5.cc (1.6), ascii_dump_load3.cc
	  (1.6), ascii_dump_load4.cc (1.5), bbrz02widening13.cc (1.5),
	  bbrz02widening14.cc (1.6), bbrz02widening15.cc (1.5),
	  bbrz02widening9.cc (1.5), concatenate1.cc (1.4), exceptions1.cc
	  (1.24), generators1.cc (1.10), generators2.cc (1.6),
	  linearpartition1.cc (1.5), linearpartition2.cc (1.5),
	  linearpartition3.cc (1.5), memory1.cc (1.11), smm1.cc (1.9),
	  watchdog1.cc (1.12): It is pointless to say `using namespace std'
	  and `std::' at the same time.

2002-11-01 Friday 18:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.48), src/AskTell.defs.hh (1.10), src/AskTell.inlines.hh
	  (1.10), src/BoundingBox.cc (1.4), src/BoundingBox.defs.hh (1.8),
	  src/ConSys.cc (1.54), src/ConSys.defs.hh (1.72),
	  src/Constraint.cc (1.34), src/Constraint.defs.hh (1.76),
	  src/Determinate.defs.hh (1.22), src/Determinate.inlines.hh
	  (1.22), src/GenSys.cc (1.70), src/GenSys.defs.hh (1.83),
	  src/Generator.cc (1.41), src/Generator.defs.hh (1.79),
	  src/Interval.cc (1.5), src/Interval.defs.hh (1.10),
	  src/Poly_Con_Relation.cc (1.5), src/Poly_Con_Relation.defs.hh
	  (1.17), src/Poly_Gen_Relation.cc (1.5),
	  src/Poly_Gen_Relation.defs.hh (1.16), src/Polyhedron.cc (1.259),
	  src/Polyhedron.defs.hh (1.169), src/Polyhedron.types.hh (1.7),
	  src/PowerSet.defs.hh (1.21), src/PowerSet.inlines.hh (1.26),
	  src/SatRow.cc (1.13), src/SatRow.defs.hh (1.22), src/Variable.cc
	  (1.9), src/Variable.defs.hh (1.26), tests/NNCminimize4.cc (1.9),
	  tests/NNCminimize6.cc (1.8), tests/bbrz02widening13.cc (1.4),
	  tests/bbrz02widening14.cc (1.5), tests/bbrz02widening15.cc (1.4),
	  tests/bbrz02widening9.cc (1.4), tests/boundingbox1.cc (1.25),
	  tests/boundingbox2.cc (1.13), tests/linearpartition1.cc (1.4),
	  tests/linearpartition2.cc (1.4), tests/linearpartition3.cc (1.4),
	  tests/mc91.cc (1.8), tests/print.cc (1.3), tests/relations1.cc
	  (1.7), tests/relations10.cc (1.3), tests/relations11.cc (1.3),
	  tests/relations12.cc (1.2), tests/relations13.cc (1.2),
	  tests/relations14.cc (1.2), tests/relations15.cc (1.2),
	  tests/relations16.cc (1.2), tests/relations17.cc (1.3),
	  tests/relations18.cc (1.2), tests/relations2.cc (1.8),
	  tests/relations3.cc (1.8), tests/relations4.cc (1.8),
	  tests/relations5.cc (1.8), tests/relations6.cc (1.7),
	  tests/relations7.cc (1.7), tests/relations8.cc (1.7),
	  tests/relations9.cc (1.8), tests/smm1.cc (1.8),
	  tests/writeconsys1.cc (1.2), tests/writegensys1.cc (1.3),
	  tests/writegensys2.cc (1.3), tests/writegensys3.cc (1.2),
	  tests/writepolyhedron1.cc (1.2), tests/writepolyhedron2.cc (1.3),
	  tests/writepolyhedron3.cc (1.2), tests/writerelation1.cc (1.2),
	  tests/writevariable1.cc (1.2): All the input/output operators
	  have been confined into namespace
	  Parma_Polyhedra_Library::IO_Operators.  This way they do not
	  conflict with the operators the user might want to define.

2002-11-01 Friday 14:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.53): Exclude Topology.hh from the generation
	  of user's documentation.

2002-11-01 Friday 14:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: BBox.cc (1.1), BBox.hh (1.1), Makefile.am (1.153),
	  boundingbox1.cc (1.24), boundingbox2.cc (1.12), boundingbox3.cc
	  (1.3): Avoid code duplication and some spaghetti-code.

2002-11-01 Friday 12:03  Elisa Ricci

	* tests/: boundingbox1.cc (1.23), boundingbox3.cc (1.2): Added
	  operator<=(const BInterval& x, const BInterval& y) and
	  operator<=(const BBox& x, const BBox& y).  In the tests, now we
	  verify also if nbox <= pbox.

2002-11-01 Friday 10:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Interval.cc (1.4): Always include <iostream>.

2002-10-31 Thursday 18:08  Elisa Ricci

	* tests/: Makefile.am (1.152), boundingbox1.cc (1.22),
	  boundingbox3.cc (1.1): Modified the test boundingbox1.cc to use
	  only necessarily closed polyhedron and to test also
	  Polyhedron::shrink_bounding_box(Box& box, bool polynomial) when
	  polynomial is "true".  Put the tests with not necessarily closed
	  polyhedra into boundingbox3.cc.

2002-10-31 Thursday 18:02  Elisa Ricci

	* src/: Interval.cc (1.3), Interval.defs.hh (1.9),
	  Interval.inlines.hh (1.6), Polyhedron.inlines.hh (1.50): Added
	  :operator<<(std::ostream& s, const ExtendedRational& x).  In
	  ExtendedRational(const Integer& num, const Integer& den) we
	  temporary use `canonicalize()'.  Added the part that we use if
	  the bounding box must be shrunk in polynomial time (if the
	  generator system of the polyhedron is not up-to-date).

2002-10-30 Wednesday 21:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.49): Two problems with the current
	  implementation of Polyhedron::shrink_bounding_box() flagged.

2002-10-30 Wednesday 21:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.47), src/Polyhedron.defs.hh (1.168),
	  src/Polyhedron.inlines.hh (1.48): New boolean parameter for
	  template <typename Box> void Polyhedron::shrink_bounding_box(Box&
	  box, bool polynomial) const: when true it specifies the bounding
	  box must be shrunk in polynomial time.

2002-10-30 Wednesday 17:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc, src/Polyhedron.defs.hh, tests/Makefile.am,
	  tests/stronglyminimize1.cc, tests/stronglyminimize2.cc,
	  tests/stronglyminimize3.cc (alt_nnc.[26,10,8,4,4,4]): Got rid of
	  Polyhedron::strongly_minimize().

2002-10-30 Wednesday 17:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.258), src/Polyhedron.defs.hh (1.167),
	  tests/Makefile.am (1.151), tests/stronglyminimize1.cc (1.2),
	  tests/stronglyminimize2.cc (1.2), tests/stronglyminimize3.cc
	  (1.2): Got rid of Polyhedron::strongly_minimize().

2002-10-30 Wednesday 17:24  Elisa Ricci

	* tests/: NNCminimize5.cc (1.5), NNCminimize6.cc (1.7),
	  addconstraints3.cc (1.6), generators1.cc (1.9), h79widening2.cc
	  (1.4), h79widening3.cc (1.4): Now these tests verify if the used
	  methods do the right thing.

2002-10-30 Wednesday 17:18  Elisa Ricci

	* tests/: Makefile.am (1.150), ascii_dump1.cc (1.2), operator1.cc
	  (1.1), writerelation1.cc (1.1): The test ascii_dump1.cc now is
	  called writerealtion1.cc, because it verifies operator<< of
	  Poly_Gen_Relation and Poly_Con_Relation.  In operator1.cc put the
	  tests to verify operator>=(const Polyhedron& x, const Polyhedron&
	  y), operator>(const Polyhedron& x, const Polyhedron& y),
	  operator!=(const Polyhedron& x, const Polyhedron& y) and
	  operator<(const Polyhedron& x, const Polyhedron& y).

2002-10-30 Wednesday 16:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Variable.defs.hh (1.25): Duplicate `public' specification
	  removed.

2002-10-30 Wednesday 10:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.25): extra_linker_opts/1
	  directive added.

2002-10-30 Wednesday 09:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.149), writegensys4.cc (1.2),
	  writevariable1.cc (1.1): Properly test operator<<(std::ostream&
	  s, const Variable& v) and the related machinery.

2002-10-29 Tuesday 18:35  Elisa Ricci

	* tests/: Makefile.am (1.148), writegensys4.cc (1.1): Added a test
	  to print a variable with id > 26.

2002-10-29 Tuesday 18:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.45), Row.defs.hh (1.57): Removed
	  operator<<(std::ostream&, const Row&).

2002-10-29 Tuesday 18:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.7): Updated.

2002-10-29 Tuesday 14:49  Elisa Ricci

	* tests/: Makefile.am (1.147), ascii_dump1.cc (1.1),
	  ascii_dump_load1.cc (1.7), ascii_dump_load2.cc (1.5),
	  ascii_dump_load3.cc (1.5), ascii_dump_load4.cc (1.4),
	  ascii_dump_load5.cc (1.2): Added some tests to verify
	  Poly_Gen_Relation::ascii_dump(), Poly_Gen_Relation::OK(),
	  Poly_Con_Relation::ascii_dump() and Poly_Con_Relation::OK().
	  Corrected the comment of the tests ascii_dump_load1.cc,
	  ascii_dump_load2.cc, ascii_dump_load3.cc, ascii_dump_load4.cc,
	  ascii_dump_load5.cc.

2002-10-28 Monday 08:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/LinExpression.cc (ppl-0_4-branch.1): Fixed a bug in
	  LinExpression::operator-=().

2002-10-28 Monday 08:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, linexpression1.cc (ppl-0_4-branch.[5,1]):
	  This test shows a bug in LinExpression::operator-=().

2002-10-26 Saturday 14:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.70): Bump version number.

2002-10-25 Friday 20:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (alt_nnc.8): Definitions of num_cons()
	  and num_gens().

2002-10-25 Friday 19:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh, tests/hypercubes.cc (alt_nnc.[9,10]):
	  Added methods for printing sizes of (low-level) con_sys and
	  gen_sys.

2002-10-25 Friday 18:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.25): n strong minimization of
	  constraints, force all strict inequalities to have the same
	  epsilon coefficient.

2002-10-25 Friday 18:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.9): Test exploiting smf's.

2002-10-25 Friday 12:42  Elisa Ricci

	* tests/: Makefile.am (1.146), ascii_dump_load4.cc (1.3),
	  ascii_dump_load5.cc (1.1): Added some new test to verify
	  ascii_dump() and ascii_load().

2002-10-24 Thursday 18:07  Elisa Ricci

	* tests/: Makefile.am (1.145), ascii_dump_load4.cc (1.2),
	  writegensys3.cc (1.1): Added a new test to verify
	  operator<<(std::ostream&, const GenSys&).  Erased form
	  ascii_dump_load4.cc an unused const char*.

2002-10-24 Thursday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Init.defs.hh (1.7): Useless file inclusion removed.

2002-10-24 Thursday 15:45  Elisa Ricci

	* src/LinExpression.cc (1.15): Corrected the bug in
	  operator-=(LinExpression& e1, const LinExpression& e2): if
	  e1.size() < e2.size(), we compute a copy e of e1 with the
	  dimension of e2 and then we compute e - e2.

2002-10-24 Thursday 15:09  Elisa Ricci

	* tests/: Makefile.am (1.144), addgenerator4.cc (1.2),
	  linexpression1.cc (1.1): Now, the test addgenerator4.cc verifies
	  only Polyhedron::add_generator(g).  The bug of
	  operator-=(LinExpression& e1, const LinExpression& e2) is now
	  reported in the test linexpression1.cc.

2002-10-24 Thursday 14:37  Elisa Ricci

	* tests/: Makefile.am (1.143), addgenerator4.cc (1.1): Added a test
	  for Polyhedron::add_generator(g). This test shows a bug in
	  operator-=(LinExpression& e1, const LinExpression& e2) if
	  e1.size() < e2.size().

2002-10-23 Wednesday 12:19  Elisa Ricci

	* src/Polyhedron.cc (alt_nnc.24): Corrected a problem in
	  Polyhedron::is_BBRZ02_stabilizing(x, y): the vector `x_num_rays'
	  must have `x.gen_sys.num_columns() - 1' elements and not
	  `x.space_dimension()'. We have done the same change for the
	  vector `y_num_rays'.

2002-10-23 Wednesday 10:09  Elisa Ricci

	* src/Polyhedron.cc (alt_nnc.23): Modified
	  Polyhedron::is_BBRZ02_stabilizing(x, y) so that if `x' and `y'
	  are not necessarily closed we compute the number of their points
	  and closure points and not only the number of their closure
	  points.

2002-10-21 Monday 07:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am, smfintersection.cc, smfpolyhull.cc
	  (alt_nnc.[7,1,2]): Trying to better exploit smf's.

2002-10-21 Monday 07:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.22): Disregarding the minusepsray when
	  performing strong minimization of consys.

2002-10-19 Saturday 00:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* mkinstalldirs (1.5): Updated.

2002-10-19 Saturday 00:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: config.guess (1.1), config.sub (1.1), depcomp (1.1),
	  install-sh (1.1), ltmain.sh (1.1), missing (1.1), mkinstalldirs
	  (1.1): Missing files added.

2002-10-18 Friday 17:02  Elisa Ricci

	* src/: ConSys.cc (1.53), ConSys.defs.hh (1.71): Modified
	  ConSys:OK(): now we verify also if every row in the matrix is a
	  valid constraint.

2002-10-18 Friday 16:46  Elisa Ricci

	* tests/: Makefile.am (1.142), ascii_dump_load1.cc (1.6),
	  exceptions1.cc (1.23), writeconsys1.cc (1.1): The writeconsys1.cc
	  test verifies operator<<(s, cs).  Added tests in exceptions1.cc
	  to verify Generator::coefficient() and Constraint::coefficient().
	  In ascii_dump_load1.cc erased an unused variable.

2002-10-18 Friday 16:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/smfpolyhull.cc (alt_nnc.1): Put under CVS control.

2002-10-18 Friday 10:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.21): Modified the widening operators
	  to also add the non-strict inequality corresponding to each
	  strict inequality added.

2002-10-17 Thursday 18:33  Elisa Ricci

	* tests/: exceptions1.cc (1.22), exceptions2.cc (1.19),
	  writegensys1.cc (1.2): Added some tests to verify
	  Generator::ray(), Generator::line(), Generator::closure_point(),
	  Generator::coefficient(), Generator::divisor() and operator<<(s,
	  g).

2002-10-17 Thursday 18:30  Elisa Ricci

	* src/Polyhedron.cc (1.257): In
	  Polyhedron::BBRZ02_widening_assign() and
	  Polyhedron::is_BBRZ02_stabilizing() debugging-purpose output made
	  silent.  Modified Polyhedron::select_H79_constraints(y, cs) so
	  that when we use it the system of constraints has the right
	  topology.

2002-10-17 Thursday 17:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.8): Now committed the right file I
	  was playing with.

2002-10-17 Thursday 17:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am, hypercubes.cc (alt_nnc.[6,7]): Playing with
	  hypercubes and strong minimization.

2002-10-17 Thursday 17:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.20): Debugging-purpose output made
	  silent.

2002-10-17 Thursday 15:39  Elisa Ricci

	* tests/: Makefile.am (1.141), ascii_dump_load4.cc (1.1),
	  relations18.cc (1.1), writepolyhedron3.cc (1.1): The
	  ascii_dump_load4.cc test verifies some particular cases of
	  ConSys::ascii_dump(s) and ConSys::ascii_load(s).  The
	  relations18.cc test verifies Polyhedron::relation_with(g), where
	  "g" is a closure point and the system of constraints of the
	  polyhedron contains equalities.  The writepolyhedron3.cc test
	  verifies operator<<(std::ostream&, const Polyhedron&) with an
	  universe polyhedron.

2002-10-17 Thursday 11:20  Elisa Ricci

	* tests/: ascii_dump_load1.cc (1.5), relations17.cc (1.2): Added
	  new tests and modified other tests to verify some other methods
	  of the class GenSys.

2002-10-16 Wednesday 19:02  Elisa Ricci

	* tests/writegensys2.cc (1.2): Now we print the system of
	  generators of an empty polyhedron.

2002-10-16 Wednesday 19:00  Elisa Ricci

	* tests/: Makefile.am (1.140), limitedbbrz02widening1.cc (1.2),
	  relations17.cc (1.1), writegensys1.cc (1.1), writegensys2.cc
	  (1.1): Added new tests for the methods of the class GenSys.
	  limitedbbrz02widening1.cc is now silent.  Now we do not test
	  nnc_bbrz02widening4.cc and nnc_bbrz02widening7.cc because they
	  contains NNC polyhedra.

2002-10-16 Wednesday 17:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.256): Fixed a topology problem in
	  select_H79_constraints().

2002-10-16 Wednesday 15:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/writepolyhedron2.cc (1.2): Inconsistent spacing fixed.

2002-10-16 Wednesday 14:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.255), Polyhedron.defs.hh (1.166),
	  Polyhedron.inlines.hh (1.47): Added static member
	  add_low_level_constraints(ConSys&) to factorize common code
	  adding either the positivity or the epsilon-bound constraints.

2002-10-16 Wednesday 14:36  Elisa Ricci

	* tests/: Makefile.am (1.139), bbrz02widening19.cc (1.1),
	  limitedbbrz02widening1.cc (1.1), writepolyhedron2.cc (1.1): Added
	  new tests to verify some methods of the class Polyhedron.

2002-10-16 Wednesday 09:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.6): Experimenting with closed
	  hypercubes from which we cut vertices using strict inequalities
	  and open duals of hypercubes to which we add (relatively open)
	  facets by adding points.

2002-10-16 Wednesday 07:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.69): Handle unary plus:
	  previously, `+A = 1' could not be valid syntax for a constraint.

2002-10-16 Wednesday 07:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.69): Version number bumped.

2002-10-15 Tuesday 18:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.254): Debugging code in
	  Polyhedron::check_universe() fixed.

2002-10-15 Tuesday 18:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.138), writepolyhedron1.cc (1.1): Test
	  operator<<(std::ostream&, const Polyhedron&).

2002-10-15 Tuesday 18:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.46), src/LinExpression.defs.hh (1.56),
	  src/LinExpression.inlines.hh (1.25): New function LinExpression
	  operator+(const LinExpression&): previously an expressions like
	  `+x2-x3-x4 <= 0' could not constitute valid syntax for a
	  constraint.

2002-10-15 Tuesday 17:55  Elisa Ricci

	* src/Polyhedron.cc (1.253): Modified Polyhedron::check_univers():
	  if we are considering a not necessarily closed polyhedron and if
	  its system of constraints contains only two rows that are not
	  equalities, we are sure that they are epsilon constraints.

2002-10-15 Tuesday 17:48  Elisa Ricci

	* tests/: Makefile.am (1.137), topclosure3.cc (1.1): Added a test
	  to verify Polyhedron::topological_closure_assign().

2002-10-15 Tuesday 15:27  Elisa Ricci

	* tests/: Makefile.am (1.136), adddimensions12.cc (1.1),
	  affineimage6.cc (1.1), affinepreimage8.cc (1.1), disjoint1.cc
	  (1.1), generalizedaffineimage11.cc (1.1),
	  generalizedaffineimage12.cc (1.1), limitedh79widening4.cc (1.1):
	  Added new tests for some methods of the class Polyhedron.

2002-10-15 Tuesday 15:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog, NEWS, STANDARDS, config.guess, config.h.in,
	  config.sub, configure.ac, ltmain.sh, ppl.spec.in,
	  doc/Makefile.am, doc/bib2dox, doc/bib2html1.sed,
	  doc/bib2html2.sed, doc/definitions.dox,
	  doc/devref-browse.doxyconf-latex.in,
	  doc/devref-print.doxyconf-latex.in, doc/devref.doxyconf-html.in,
	  doc/fdl.dox, doc/gpl.dox, interfaces/C/ppl_c.cc,
	  interfaces/C/ppl_c.h, interfaces/Prolog/Prolog_interface.dox,
	  interfaces/Prolog/clpq2.pl, interfaces/Prolog/pl_check.pl,
	  interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/Ciao/ppl_ciao.pl,
	  interfaces/Prolog/GNU/ppl_gprolog.pl,
	  interfaces/Prolog/SICStus/Makefile.am,
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc,
	  interfaces/Prolog/SWI/ppl_swiprolog.cc,
	  interfaces/Prolog/XSB/ppl_xsb.H,
	  interfaces/Prolog/XSB/ppl_xsb.cc,
	  interfaces/Prolog/YAP/ppl_yap.cc, src/AskTell.defs.hh,
	  src/BoundingBox.defs.hh, src/C_Polyhedron.defs.hh, src/ConSys.cc,
	  src/ConSys.defs.hh, src/Constraint.cc, src/Constraint.defs.hh,
	  src/Determinate.defs.hh, src/Determinate.inlines.hh,
	  src/GenSys.cc, src/GenSys.defs.hh, src/Integer.defs.hh,
	  src/Integer.inlines.hh, src/LinExpression.cc,
	  src/LinExpression.defs.hh, src/LinExpression.inlines.hh,
	  src/Makefile.am, src/Matrix.cc, src/Matrix.defs.hh,
	  src/NNC_Polyhedron.defs.hh, src/Poly_Con_Relation.cc,
	  src/Poly_Con_Relation.defs.hh, src/Poly_Gen_Relation.cc,
	  src/Poly_Gen_Relation.defs.hh, src/Polyhedron.cc,
	  src/Polyhedron.defs.hh, src/PowerSet.defs.hh,
	  src/PowerSet.inlines.hh, src/Row.cc, src/Row.defs.hh,
	  src/SatMatrix.cc, src/SatMatrix.defs.hh, src/SatRow.cc,
	  src/SatRow.defs.hh, src/Status.cc, src/Status.defs.hh,
	  src/algorithms.hh, src/conversion.cc, src/globals.hh,
	  src/minimize.cc, src/simplify.cc, tests/Makefile.am,
	  tests/addconstraint2.cc, tests/addconstraint3.cc,
	  tests/addconstraints10.cc, tests/addconstraints11.cc,
	  tests/addconstraints12.cc, tests/adddimensions11.cc,
	  tests/addgenerator3.cc, tests/addgenerators11.cc,
	  tests/affineimage3.cc, tests/affineimage4.cc,
	  tests/affineimage5.cc, tests/affinepreimage5.cc,
	  tests/affinepreimage6.cc, tests/affinepreimage7.cc,
	  tests/ascii_dump_load1.cc, tests/ascii_dump_load2.cc,
	  tests/ascii_dump_load3.cc, tests/bbrz02widening1.cc,
	  tests/bbrz02widening10.cc, tests/bbrz02widening11.cc,
	  tests/bbrz02widening12.cc, tests/bbrz02widening13.cc,
	  tests/bbrz02widening14.cc, tests/bbrz02widening15.cc,
	  tests/bbrz02widening16.cc, tests/bbrz02widening17.cc,
	  tests/bbrz02widening18.cc, tests/bbrz02widening6.cc,
	  tests/bbrz02widening7.cc, tests/bbrz02widening9.cc,
	  tests/concatenate5.cc, tests/contains1.cc, tests/exceptions1.cc,
	  tests/exceptions2.cc, tests/files.cc, tests/files.hh,
	  tests/generalizedaffineimage1.cc,
	  tests/generalizedaffineimage10.cc,
	  tests/generalizedaffineimage2.cc,
	  tests/generalizedaffineimage3.cc,
	  tests/generalizedaffineimage4.cc,
	  tests/generalizedaffineimage5.cc,
	  tests/generalizedaffineimage6.cc,
	  tests/generalizedaffineimage7.cc,
	  tests/generalizedaffineimage8.cc,
	  tests/generalizedaffineimage9.cc, tests/h79widening5.cc,
	  tests/intersection10.cc, tests/linearpartition1.cc,
	  tests/linearpartition2.cc, tests/linearpartition3.cc,
	  tests/mc91.cc, tests/memory1.cc, tests/minconstraints2.cc,
	  tests/minconstraints3.cc, tests/mingenerators2.cc,
	  tests/mingenerators3.cc, tests/polydifference7.cc,
	  tests/polyhull7.cc, tests/polyhull8.cc, tests/relations10.cc,
	  tests/relations11.cc, tests/relations12.cc, tests/relations13.cc,
	  tests/relations14.cc, tests/relations15.cc, tests/relations16.cc,
	  tests/stronglyminimize1.cc, tests/stronglyminimize2.cc,
	  tests/stronglyminimize3.cc, tests/timeelapse6.cc,
	  tests/timeelapse7.cc, tests/topclosed3.cc, tests/topclosure2.cc
	  (alt_nnc.[3,6,4,3,5,3,5,3,3,3,3,3,3,4,3,3,3,3,3,6,6,4,4,4,5,4,4,3,4,4,4,4,4,5,5,5,8,7,7,7,7,7,10,7,4,4,4,5,5,4,4,5,5,4,5,4,5,19,8,6,6,4,5,4,5,3,5,4,5,3,4,5,5,4,5,3,3,4,4,3,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3,3,3,3,3,3,3,3,4,4,4,3,3,5,5,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,5,5,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3]):
	  Merged the changes on the main trunk within the tags
	  third_merge_to_alt_nnc and fourth_merge_to_alt_nnc.

2002-10-15 Tuesday 14:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog, NEWS, STANDARDS, config.guess, config.h.in,
	  config.sub, configure.ac, ltmain.sh, ppl.spec.in,
	  doc/Makefile.am, doc/bib2dox, doc/bib2html1.sed,
	  doc/bib2html2.sed, doc/definitions.dox,
	  doc/devref-browse.doxyconf-latex.in,
	  doc/devref-print.doxyconf-latex.in, doc/devref.doxyconf-html.in,
	  doc/fdl.dox, doc/gpl.dox, interfaces/C/ppl_c.cc,
	  interfaces/C/ppl_c.h, interfaces/Prolog/Prolog_interface.dox,
	  interfaces/Prolog/clpq2.pl, interfaces/Prolog/pl_check.pl,
	  interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/Ciao/ppl_ciao.pl,
	  interfaces/Prolog/GNU/ppl_gprolog.pl,
	  interfaces/Prolog/SICStus/Makefile.am,
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc,
	  interfaces/Prolog/SWI/ppl_swiprolog.cc,
	  interfaces/Prolog/XSB/ppl_xsb.H,
	  interfaces/Prolog/XSB/ppl_xsb.cc,
	  interfaces/Prolog/YAP/ppl_yap.cc, src/AskTell.defs.hh,
	  src/BoundingBox.defs.hh, src/C_Polyhedron.cc,
	  src/C_Polyhedron.defs.hh, src/ConSys.cc, src/ConSys.defs.hh,
	  src/ConSys.inlines.hh, src/Constraint.cc, src/Constraint.defs.hh,
	  src/Constraint.inlines.hh, src/Determinate.defs.hh,
	  src/Determinate.inlines.hh, src/GenSys.cc, src/GenSys.defs.hh,
	  src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/Integer.defs.hh,
	  src/Integer.inlines.hh, src/LinExpression.cc,
	  src/LinExpression.defs.hh, src/LinExpression.inlines.hh,
	  src/Makefile.am, src/Matrix.cc, src/Matrix.defs.hh,
	  src/NNC_Polyhedron.defs.hh, src/Poly_Con_Relation.cc,
	  src/Poly_Con_Relation.defs.hh, src/Poly_Gen_Relation.cc,
	  src/Poly_Gen_Relation.defs.hh, src/Polyhedron.cc,
	  src/Polyhedron.defs.hh, src/Polyhedron.inlines.hh,
	  src/PowerSet.defs.hh, src/PowerSet.inlines.hh, src/Row.cc,
	  src/Row.defs.hh, src/SatMatrix.cc, src/SatMatrix.defs.hh,
	  src/SatRow.cc, src/SatRow.defs.hh, src/Status.cc,
	  src/Status.defs.hh, src/algorithms.hh, src/conversion.cc,
	  src/globals.hh, src/minimize.cc, src/simplify.cc,
	  tests/Makefile.am, tests/addconstraint2.cc,
	  tests/addconstraint3.cc, tests/addconstraints10.cc,
	  tests/addconstraints11.cc, tests/addconstraints12.cc,
	  tests/adddimensions11.cc, tests/addgenerator3.cc,
	  tests/addgenerators11.cc, tests/affineimage3.cc,
	  tests/affineimage4.cc, tests/affineimage5.cc,
	  tests/affinepreimage5.cc, tests/affinepreimage6.cc,
	  tests/affinepreimage7.cc, tests/ascii_dump_load1.cc,
	  tests/ascii_dump_load2.cc, tests/ascii_dump_load3.cc,
	  tests/bbrz02widening1.cc, tests/bbrz02widening10.cc,
	  tests/bbrz02widening11.cc, tests/bbrz02widening12.cc,
	  tests/bbrz02widening13.cc, tests/bbrz02widening14.cc,
	  tests/bbrz02widening15.cc, tests/bbrz02widening16.cc,
	  tests/bbrz02widening17.cc, tests/bbrz02widening18.cc,
	  tests/bbrz02widening6.cc, tests/bbrz02widening7.cc,
	  tests/bbrz02widening9.cc, tests/boundingbox2.cc,
	  tests/concatenate5.cc, tests/contains1.cc, tests/exceptions1.cc,
	  tests/exceptions2.cc, tests/files.cc, tests/files.hh,
	  tests/generalizedaffineimage1.cc,
	  tests/generalizedaffineimage10.cc,
	  tests/generalizedaffineimage2.cc,
	  tests/generalizedaffineimage3.cc,
	  tests/generalizedaffineimage4.cc,
	  tests/generalizedaffineimage5.cc,
	  tests/generalizedaffineimage6.cc,
	  tests/generalizedaffineimage7.cc,
	  tests/generalizedaffineimage8.cc,
	  tests/generalizedaffineimage9.cc, tests/h79widening5.cc,
	  tests/hypercubes.cc, tests/intersection10.cc,
	  tests/linearpartition1.cc, tests/linearpartition2.cc,
	  tests/linearpartition3.cc, tests/mc91.cc, tests/memory1.cc,
	  tests/minconstraints2.cc, tests/minconstraints3.cc,
	  tests/mingenerators2.cc, tests/mingenerators3.cc,
	  tests/polydifference7.cc, tests/polyhull7.cc, tests/polyhull8.cc,
	  tests/relations10.cc, tests/relations11.cc, tests/relations12.cc,
	  tests/relations13.cc, tests/relations14.cc, tests/relations15.cc,
	  tests/relations16.cc, tests/stronglyminimize1.cc,
	  tests/stronglyminimize2.cc, tests/stronglyminimize3.cc,
	  tests/timeelapse6.cc, tests/timeelapse7.cc, tests/topclosed3.cc,
	  tests/topclosure2.cc
	  (alt_nnc.[2,5,3,2,4,2,4,2,2,2,2,2,2,3,2,2,2,2,2,5,5,3,3,3,4,3,3,2,3,3,3,3,3,4,4,3,4,7,6,5,6,6,5,6,6,9,6,7,7,5,3,3,3,4,4,3,3,4,4,3,4,3,4,18,7,7,5,5,3,4,3,4,2,4,3,4,2,3,4,4,3,4,2,2,3,3,2,2,2,2,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,3,3,3,5,2,2,4,4,2,2,2,2,2,2,2,2,2,2,2,2,2,5,2,2,2,2,4,4,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2]):
	  Erroneous merge undone.

2002-10-15 Tuesday 12:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.67): Documentation for
	  ppl_Polyhedron_add_constraint_and_minimize ppl_Polyhedron_and
	  add_generator_and_minimize added.

2002-10-15 Tuesday 12:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.10): Bug introduced in previous change
	  fixed.

2002-10-15 Tuesday 10:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.20), configure.ac (1.68), tests/memory1.cc (1.10):
	  Portability improvements for memory-guarded programs.  Mac OS X
	  is now supported.  Operating systems not providing any mechanism
	  to limit memory usage are also supported.

2002-10-15 Tuesday 09:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.252): Greatly simplified the
	  strongly_minimize() procedure.

2002-10-15 Tuesday 08:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.30): Specify -lstdc++ in
	  splfr command invocation (this seems to help on Mac OS X).

2002-10-15 Tuesday 08:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.9): Use
	  Polyhedron::add_constraint_and_minimize().

2002-10-14 Monday 21:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog, NEWS, STANDARDS, config.guess, config.h.in,
	  config.sub, configure.ac, ltmain.sh, ppl.spec.in,
	  doc/Makefile.am, doc/bib2dox, doc/bib2html1.sed,
	  doc/bib2html2.sed, doc/definitions.dox,
	  doc/devref-browse.doxyconf-latex.in,
	  doc/devref-print.doxyconf-latex.in, doc/devref.doxyconf-html.in,
	  doc/fdl.dox, doc/gpl.dox, interfaces/C/ppl_c.cc,
	  interfaces/C/ppl_c.h, interfaces/Prolog/Prolog_interface.dox,
	  interfaces/Prolog/clpq2.pl, interfaces/Prolog/pl_check.pl,
	  interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/Ciao/ppl_ciao.pl,
	  interfaces/Prolog/GNU/ppl_gprolog.pl,
	  interfaces/Prolog/SICStus/Makefile.am,
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc,
	  interfaces/Prolog/SWI/ppl_swiprolog.cc,
	  interfaces/Prolog/XSB/ppl_xsb.H,
	  interfaces/Prolog/XSB/ppl_xsb.cc,
	  interfaces/Prolog/YAP/ppl_yap.cc, src/AskTell.defs.hh,
	  src/BoundingBox.defs.hh, src/C_Polyhedron.cc,
	  src/C_Polyhedron.defs.hh, src/ConSys.cc, src/ConSys.defs.hh,
	  src/ConSys.inlines.hh, src/Constraint.cc, src/Constraint.defs.hh,
	  src/Constraint.inlines.hh, src/Determinate.defs.hh,
	  src/Determinate.inlines.hh, src/GenSys.cc, src/GenSys.defs.hh,
	  src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/Integer.defs.hh,
	  src/Integer.inlines.hh, src/LinExpression.cc,
	  src/LinExpression.defs.hh, src/LinExpression.inlines.hh,
	  src/Makefile.am, src/Matrix.cc, src/Matrix.defs.hh,
	  src/NNC_Polyhedron.defs.hh, src/Poly_Con_Relation.cc,
	  src/Poly_Con_Relation.defs.hh, src/Poly_Gen_Relation.cc,
	  src/Poly_Gen_Relation.defs.hh, src/Polyhedron.cc,
	  src/Polyhedron.defs.hh, src/Polyhedron.inlines.hh,
	  src/PowerSet.defs.hh, src/PowerSet.inlines.hh, src/Row.cc,
	  src/Row.defs.hh, src/SatMatrix.cc, src/SatMatrix.defs.hh,
	  src/SatRow.cc, src/SatRow.defs.hh, src/Status.cc,
	  src/Status.defs.hh, src/algorithms.hh, src/conversion.cc,
	  src/globals.hh, src/minimize.cc, src/simplify.cc,
	  tests/Makefile.am, tests/addconstraint2.cc,
	  tests/addconstraint3.cc, tests/addconstraints10.cc,
	  tests/addconstraints11.cc, tests/addconstraints12.cc,
	  tests/adddimensions11.cc, tests/addgenerator3.cc,
	  tests/addgenerators11.cc, tests/affineimage3.cc,
	  tests/affineimage4.cc, tests/affineimage5.cc,
	  tests/affinepreimage5.cc, tests/affinepreimage6.cc,
	  tests/affinepreimage7.cc, tests/ascii_dump_load1.cc,
	  tests/ascii_dump_load2.cc, tests/ascii_dump_load3.cc,
	  tests/bbrz02widening1.cc, tests/bbrz02widening10.cc,
	  tests/bbrz02widening11.cc, tests/bbrz02widening12.cc,
	  tests/bbrz02widening13.cc, tests/bbrz02widening14.cc,
	  tests/bbrz02widening15.cc, tests/bbrz02widening16.cc,
	  tests/bbrz02widening17.cc, tests/bbrz02widening18.cc,
	  tests/bbrz02widening6.cc, tests/bbrz02widening7.cc,
	  tests/bbrz02widening9.cc, tests/boundingbox2.cc,
	  tests/concatenate5.cc, tests/contains1.cc, tests/exceptions1.cc,
	  tests/exceptions2.cc, tests/files.cc, tests/files.hh,
	  tests/generalizedaffineimage1.cc,
	  tests/generalizedaffineimage10.cc,
	  tests/generalizedaffineimage2.cc,
	  tests/generalizedaffineimage3.cc,
	  tests/generalizedaffineimage4.cc,
	  tests/generalizedaffineimage5.cc,
	  tests/generalizedaffineimage6.cc,
	  tests/generalizedaffineimage7.cc,
	  tests/generalizedaffineimage8.cc,
	  tests/generalizedaffineimage9.cc, tests/h79widening5.cc,
	  tests/hypercubes.cc, tests/intersection10.cc,
	  tests/linearpartition1.cc, tests/linearpartition2.cc,
	  tests/linearpartition3.cc, tests/mc91.cc, tests/memory1.cc,
	  tests/minconstraints2.cc, tests/minconstraints3.cc,
	  tests/mingenerators2.cc, tests/mingenerators3.cc,
	  tests/polydifference7.cc, tests/polyhull7.cc, tests/polyhull8.cc,
	  tests/relations10.cc, tests/relations11.cc, tests/relations12.cc,
	  tests/relations13.cc, tests/relations14.cc, tests/relations15.cc,
	  tests/relations16.cc, tests/stronglyminimize1.cc,
	  tests/stronglyminimize2.cc, tests/stronglyminimize3.cc,
	  tests/timeelapse6.cc, tests/timeelapse7.cc, tests/topclosed3.cc,
	  tests/topclosure2.cc
	  (alt_nnc.[1,4,2,1,3,1,3,1,1,1,1,1,1,2,1,1,1,1,1,4,4,2,2,2,3,2,2,1,2,2,2,2,2,3,3,2,3,6,5,4,5,5,4,5,5,8,5,6,6,4,2,2,2,3,3,2,2,3,3,2,3,2,3,17,6,6,4,4,2,3,2,3,1,3,2,3,1,2,3,3,2,3,1,1,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,2,2,2,4,1,1,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,4,1,1,1,1,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]):
	  Fourth merge from main trunk.

2002-10-14 Monday 17:09  Elisa Ricci

	* tests/: Makefile.am (1.135), addconstraint3.cc (1.1),
	  addgenerator3.cc (1.1): Added a test for
	  Polyhedron::add_constraint_and_minimize(c) and a test for
	  Polyhedron::add_generator_and_minimize(g).

2002-10-14 Monday 16:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.45), interfaces/C/ppl_c.cc (1.49), interfaces/C/ppl_c.h
	  (1.49), interfaces/Prolog/pl_check.pl (1.26),
	  interfaces/Prolog/ppl_prolog.icc (1.68),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.24),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.28),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.52),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.5),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.10),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.46), src/Polyhedron.cc
	  (1.251), src/Polyhedron.defs.hh (1.165): New methods bool
	  Polyhedron::add_constraint_and_minimize(const Constraint&) and
	  bool Polyhedron::add_generator_and_minimize(const Generator&) to
	  add a constraint or a generator and minimizing the result at the
	  same time.

2002-10-14 Monday 14:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.44), interfaces/C/ppl_c.cc (1.48), interfaces/C/ppl_c.h
	  (1.48), interfaces/Prolog/Prolog_interface.dox (1.66),
	  interfaces/Prolog/pl_check.pl (1.25),
	  interfaces/Prolog/ppl_prolog.icc (1.67),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.23),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.27),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.51),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.4),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.9),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.45), src/Polyhedron.cc
	  (1.250), src/Polyhedron.defs.hh (1.164): New method void
	  Polyhedron::BBRZ02_limited_widening_assign(const Polyhedron&,
	  ConSys&).  Both this and void
	  Polyhedron::BBRZ02_widening_assign(const Polyhedron&) are now
	  available through all the interfaces.

2002-10-14 Monday 12:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.67): We now require autoconf (at least) 2.54 and
	  automake (at least) 1.7.

2002-10-14 Monday 12:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.66), interfaces/Prolog/SICStus/Makefile.am
	  (1.29): An hack that was necessary to build the SICStus Prolog
	  interface with SICStus 3.9.0 has been removed, since it prevented
	  us to build on Darwin.  Consequently, we now require SICStus
	  3.9.1 or later version.

2002-10-14 Monday 08:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.65): Bump version number.

2002-10-13 Sunday 22:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.6): Update to the latest version of libtool.

2002-10-13 Sunday 16:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.8): Bug fixed in widening_assign().

2002-10-13 Sunday 16:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.defs.hh (1.75): We were too eager in converting
	  "<" and ">" to "\<" and "\>" in Doxygen comments: this should not
	  be done within LaTeX formulas.

2002-10-12 Saturday 22:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/conversion.cc (1.35): Comment fixed for Doxygen.

2002-10-12 Saturday 21:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.9): Much improved portability.

2002-10-12 Saturday 21:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.19), configure.ac (1.64): Check for declarations
	  of RLIMIT_DATA, RLIMIT_RSS, RLIMIT_VMEM, RLIMIT_AS in
	  <sys/resource.h>.

2002-10-12 Saturday 20:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.7): Two serious bugs have been fixed.  Other
	  improvements.

2002-10-12 Saturday 20:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.21), Determinate.inlines.hh (1.21),
	  PowerSet.defs.hh (1.20), PowerSet.inlines.hh (1.25): New default
	  constructor.

2002-10-12 Saturday 14:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.103), src/AskTell.defs.hh (1.9),
	  src/C_Polyhedron.defs.hh (1.18), src/Constraint.defs.hh (1.74),
	  src/Determinate.defs.hh (1.20), src/NNC_Polyhedron.defs.hh
	  (1.20): Fix all but one of the problems reported by the new
	  version of Doxygen.

2002-10-12 Saturday 14:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/fdl.dox (1.2), doc/gpl.dox (1.3),
	  interfaces/Prolog/Prolog_interface.dox (1.65): Sectioning fixed.

2002-10-12 Saturday 09:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: bib2dox (1.2), bib2html1.sed (1.1), bib2html2.sed (1.1),
	  bib2html2dox.sed (1.2), definitions.dox (1.102): Improvements to
	  the machinery we use to build the bibliography section of the
	  documentation.

2002-10-11 Friday 18:41  Elisa Ricci

	* tests/: Makefile.am (1.134), stronglyminimize1.cc (1.1),
	  stronglyminimize2.cc (1.1), stronglyminimize3.cc (1.1): Added
	  three tests for Polyhedron::strongly_minimize().

2002-10-11 Friday 18:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.44): Use the new C interface
	  provided by YAP.

2002-10-11 Friday 16:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.64): Mention other
	  problems we had with the GNU Prolog interface.

2002-10-11 Friday 12:53  Elisa Ricci

	* src/Polyhedron.defs.hh (1.163): Polyhedron::strongly_minimize()
	  is now public, but the user can not see its documentation.

2002-10-11 Friday 11:49  Elisa Ricci

	* tests/: Makefile.am (1.133), addconstraint2.cc (1.1),
	  concatenate5.cc (1.1), intersection10.cc (1.1),
	  polydifference7.cc (1.1), polyhull8.cc (1.1): Added these tests
	  to verify some methods of the class Polyhedron in the case of
	  empty or zero dimensional polyhedron.

2002-10-11 Friday 11:46  Elisa Ricci

	* tests/generalizedaffineimage10.cc (1.2): Added two tests to
	  verify Polyhedron::generalized_affine_image(lhs, r, rhs) when the
	  set of variables of left hand side and the set of the variable of
	  the right hand side are disjoint.

2002-10-10 Thursday 17:47  Elisa Ricci

	* tests/: Makefile.am (1.132), generalizedaffineimage10.cc (1.1):
	  Added a new test for Polyhedron::generalized_affine_image(lhs, r,
	  rhs).

2002-10-10 Thursday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.249): Do not use vector<bool>.

2002-10-10 Thursday 11:20  Elisa Ricci

	* src/Polyhedron.cc (1.248): Some improvements to the third
	  technique of Polyhedron::BBRZ02_widening_assign(): - the test
	  y.relation_with(x_g) == Poly_Gen_Relation::nothing() is done
	  after testing if x_g is a ray; - corrected the test of the
	  elements of the vector "considered"; - now we use a const
	  reference x_g (for x.gen_sys[i]) to find how it evolved since a
	  ray of "y" and a copy of "x_g" to built the new ray.	Use
	  "H79_con_sys" instead of "common_con_sys" in
	  Polyhedron::BBRZ02_widening_assign() and in
	  Polyhedron::H79_widening_assign().

2002-10-10 Thursday 10:35  Elisa Ricci

	* src/: Polyhedron.cc (1.247), Polyhedron.defs.hh (1.162): Improved
	  the messages of the exceptions.

2002-10-09 Wednesday 20:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/addgenerators11.cc (1.2): Be quiet.

2002-10-09 Wednesday 17:59  Elisa Ricci

	* tests/: bbrz02widening13.cc (1.3), bbrz02widening14.cc (1.4),
	  bbrz02widening15.cc (1.3), bbrz02widening9.cc (1.3): Added the
	  "known_result" to verify if the resulting polyhedron is equal to
	  the polyhedron that we want to have.

2002-10-09 Wednesday 14:54  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.24): Problem due to bug in GNU
	  Prolog now avoided by delaying as much as possible any reference
	  to variables that are intended to be bound to polyhedral handles.

2002-10-09 Wednesday 11:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/algorithms.hh (1.6): poly_hull_assign_if_exact(p,q) now
	  return true if the poly-hull is exact.

2002-10-09 Wednesday 10:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.73), Polyhedron.defs.hh (1.161):
	  Escaped a few ">" and "<" occurring inside HTML tags.

2002-10-09 Wednesday 10:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.101): "<" and ">" inside HTMK tags have to
	  be escaped by "\".

2002-10-09 Wednesday 09:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.131), bbrz02widening18.cc (1.1): New test
	  for bbrz02widening18, showing that we fall back to H79 when we
	  may have obtained more precise results by combining H79 and the
	  bbrz02 heuristics.

2002-10-09 Wednesday 09:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.20): Use the `-d Validate' option of doxygen
	  (and see the resulting disaster).

2002-10-08 Tuesday 12:29  Elisa Ricci

	* src/Polyhedron.cc (1.246), tests/Makefile.am (1.130),
	  tests/bbrz02widening16.cc (1.1), tests/bbrz02widening17.cc (1.1):
	  Improved the third technique: the rays that we want to add are
	  modified so that they satisfy the constraints of
	  "common_con_sys".  Added to test to verify these changes.

2002-10-08 Tuesday 09:24  Elisa Ricci

	* src/Polyhedron.cc (1.245): Modified
	  Polyhedron::is_BBRZ02_stabilizing(): if the number of points (or
	  closure points) of `y' is smaller than the number of points of
	  `x', the chain is not stabilizing.

2002-10-07 Monday 21:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.129), ascii_dump_load1.cc (1.4),
	  ascii_dump_load2.cc (1.4), ascii_dump_load3.cc (1.4): Write files
	  in the current directory.  Make sure the current directory is
	  also properly cleaned afterwards.

2002-10-07 Monday 17:16  Elisa Ricci

	* src/Polyhedron.cc (1.244): Made a little improvement to the third
	  technique of Polyhedron::BBRZ02_widening_assign(): we built a
	  temporary system of generators and then we use
	  Polyhedron::add_generators_and_minimize() to add this system to
	  the polyhedron `x'.

2002-10-07 Monday 16:07  Elisa Ricci

	* src/Polyhedron.cc (1.243): Corrected an error in the second
	  technique of Polyhedron::BBRZ02_widening_assign(): we add the
	  system of generators `valid_rays' if the new ray has all
	  homogeneous coefficients equal to zero or if adding only a ray
	  there is not stabilization.

2002-10-07 Monday 14:38  Elisa Ricci

	* src/Polyhedron.cc (1.242): Modified the second technique of
	  Polyhedron::BBRZ02_widening_assign() so that before we add only
	  the averaged ray and if the result is not stabilizing we add all
	  the rays of `valid_rays'.

2002-10-07 Monday 12:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.241): In is_BBRZ02_stabilizing(), corrected
	  a bug in the test on stabilization based on number of rays.

2002-10-07 Monday 11:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.24), ppl_prolog.icc (1.66),
	  Ciao/ppl_ciao.pl (1.22), GNU/ppl_gprolog.pl (1.18),
	  SICStus/ppl_sicstus_sd.cc (1.26), SWI/ppl_swiprolog.cc (1.50),
	  XSB/ppl_xsb.H (1.3), XSB/ppl_xsb.cc (1.8), YAP/ppl_yap.cc (1.43):
	  Added ppl_Polyhedron_is_disjoint_from_Polyhedron/2 to Prolog
	  interface.  Tests for this added to pl_check.pl

2002-10-07 Monday 11:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.240): Modified method
	  Polyhedron::is_BBRZ02_stabilizing(x, y) so that:  - we check for
	  a decreasing number of rays lying inside the faces	of an
	  orthant.   - we check whether x and y do happens to be the same
	  polyhedron.  Modified method
	  Polyhedron::BBRZ02_widening_assign(y) to apply, as a last resort,
	  the widening H79.

2002-10-07 Monday 11:19  Elisa Ricci

	* tests/: ascii_dump_load3.cc (1.3), bbrz02widening1.cc (1.3),
	  bbrz02widening12.cc (1.2), exceptions1.cc (1.21), exceptions2.cc
	  (1.18): Modified these tests so that there is only a
	  `set_handlers()' for each test.

2002-10-07 Monday 10:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.160): In the Doxygen documentation of
	  affine (pre)-image operators, fixed a couple of mismatches in the
	  naming of parameters.

2002-10-07 Monday 07:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.inlines.hh (1.20): PH&
	  Determinate<PH>::polyhedron() fixed: it was not calling mutate().

2002-10-06 Sunday 22:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.5): Added a tentative, inefficient
	  implementation for template <typename PH> bool
	  poly_hull_assign_if_exact(PH& p, const PH& q): if the poly-hull
	  of `p' and `q' is exact, assigns it to `p' and returns `true'; it
	  returns false otherwise.

	  Added a tentative implementation for template <typename PH> void
	  complete_reduction(PowerSet<Determinate<PH> >& p): it collapses
	  all the elements of `p' that can be poly-hulled without loss of
	  precision.

	  Added tentative implementations of template <typename PH> void
	  H79_widening_assign(PowerSet<Determinate<PH> >& r, const
	  PowerSet<Determinate<PH> >& q) and template <typename PH> void
	  BBRZ02_widening_assign(PowerSet<Determinate<PH> >& r, const
	  PowerSet<Determinate<PH> >& q): they are meant to generalize the
	  widenings on polyhedra to sets of polyhedra.

2002-10-06 Sunday 22:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.19), Determinate.inlines.hh (1.19):
	  Added PH& polyhedron().

2002-10-06 Sunday 22:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: linearpartition1.cc (1.3), linearpartition2.cc (1.3),
	  linearpartition3.cc (1.3): Reduce the scope of declarations.

2002-10-06 Sunday 20:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: linearpartition2.cc (1.2), linearpartition3.cc (1.2):
	  Made quiet.

2002-10-06 Sunday 19:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.128), linearpartition2.cc (1.1),
	  linearpartition3.cc (1.1): Test linear_partition() with two
	  disjoint polyhedra and with two telescopic polyhedra.

2002-10-06 Sunday 19:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.4): Relax the limitations of
	  linear_partition().

2002-10-06 Sunday 18:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.239): Many (small) improvements in the
	  implementation of the 2nd technique of BBRZ02_widening_assign().

2002-10-06 Sunday 10:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.100): Bibliography added (perhaps not at
	  the right place).

2002-10-06 Sunday 10:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: bib2dox (1.1), bib2html2dox.sed (1.1): A tool to convert a
	  BibTeX file into something suitable for inclusion into the
	  Doxygen documentation.

2002-10-06 Sunday 09:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.3): Comment slightly improved.

2002-10-06 Sunday 09:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.23),
	  devref-print.doxyconf-latex.in (1.23), devref.doxyconf-html.in
	  (1.24): Include `algorithms.hh' in the sources used to create the
	  developer's reference manual.

2002-10-06 Sunday 09:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.99): Use the condition
	  `Include_Implementation_Details' instead of
	  `Implementation_Info'.

2002-10-06 Sunday 09:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* STANDARDS (1.8): A few minor improvements.

2002-10-05 Saturday 22:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/algorithms.hh (1.2): Include implementation details for
	  linear_partition().

2002-10-05 Saturday 22:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/linearpartition1.cc (1.2): Be quiet.

2002-10-05 Saturday 22:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bbrz02widening13.cc (1.2), bbrz02widening14.cc (1.3):
	  Made silent.

2002-10-05 Saturday 22:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.238), Polyhedron.defs.hh (1.159): Added
	  new private method void Polyhedron::select_H79_constraints(const
	  Polyhedron& y,					ConSys&
	  cs_selection) const; that selects the common constraints of *this
	  and y (into cs_selection) according to H79.  Used the method both
	  in H79_widening and in BBRZ02_widening.  Modified the second
	  technique of BBRZ02 to have more chances that it will produce a
	  stabilizing sequence of polyhedra.  Added a few outputs for the
	  debugging of BBRZ02_widening.

2002-10-05 Saturday 20:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.52), src/algorithms.hh (1.1),
	  tests/Makefile.am (1.127), tests/linearpartition1.cc (1.1): New
	  function template <typename PH> std::pair<PH,
	  PowerSet<Determinate<NNC_Polyhedron> > > linear_partition(const
	  PH& p, const PH& q) computing a partition of `q' with respect to
	  `p'.

2002-10-05 Saturday 20:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.18), Determinate.inlines.hh (1.18):
	  Added const PH& polyhedron() const.

2002-10-05 Saturday 19:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.47), ppl_c.h (1.47): The function int
	  ppl_Polyhedron_is_disjoint_from_Polyhedron() makes the
	  disjointness test for polyhedra available to the C interface.

2002-10-05 Saturday 19:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.43), src/Polyhedron.cc (1.237), src/Polyhedron.defs.hh
	  (1.158): New function bool are_disjoint(const Polyhedron&, const
	  Polyhedron&) returning true if and only if the two polyhedra are
	  disjoint.

2002-10-05 Saturday 18:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.157): All the relational operators on
	  polyhedra are now commented the same way.

2002-10-05 Saturday 17:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.19), PowerSet.inlines.hh (1.24): The
	  default constructor now builds an empty (bottom) PowerSet.

2002-10-05 Saturday 16:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: BoundingBox.defs.hh (1.7), ConSys.cc (1.52), ConSys.defs.hh
	  (1.70), Constraint.cc (1.33), Constraint.defs.hh (1.72),
	  Determinate.defs.hh (1.17), GenSys.cc (1.69), GenSys.defs.hh
	  (1.82), Generator.cc (1.40), Generator.defs.hh (1.78),
	  Matrix.defs.hh (1.37), Poly_Con_Relation.defs.hh (1.16),
	  Poly_Gen_Relation.defs.hh (1.15), Polyhedron.cc (1.236),
	  Polyhedron.defs.hh (1.156), PowerSet.defs.hh (1.18), Row.cc
	  (1.44), Row.defs.hh (1.56), SatMatrix.cc (1.22),
	  SatMatrix.defs.hh (1.26), SatRow.cc (1.12), SatRow.defs.hh
	  (1.21), Status.cc (1.16), Status.defs.hh (1.23), conversion.cc
	  (1.34), minimize.cc (1.25), simplify.cc (1.19): Started enforcing
	  STANDARDS rules as far as the doxygen documentation is concerned:
	  - added a \brief declaration where needed;  - cut detailed
	  doxygen comments from *.cc files and pasted in *.defs.hh    files
	  (with the exceptions of conversion, minimize and simplify);  -
	  started using the conditional section
	  Include_Implementation_Details;  - avoided using \fn declaration
	  where it is not needed (it was also	 causing problems since it
	  does not support line breaks);  - fixed some problems with the
	  naming of doxygen documentation groups.

2002-10-05 Saturday 12:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/mc91.cc (1.7): Fixed and made quiet.

2002-10-05 Saturday 12:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.23): Fixed a couple of bugs concerning
	  space dimensions.

2002-10-05 Saturday 10:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.17), PowerSet.inlines.hh (1.22): The
	  default constructor for PowerSet now takes the dimension of the
	  enclosing space as an optional parameter, defaulting to zero.

2002-10-05 Saturday 10:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.68), Polyhedron.cc (1.235): Added missing
	  \relates doxygen declarations.

2002-10-05 Saturday 10:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.33): Added a missing namespace qualification
	  in the doxygen comment.

2002-10-05 Saturday 10:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.51), ConSys.defs.hh (1.69): According to
	  STANDARDS, moved doxygen documentation in the header file.  Added
	  a missing \relates declaration to avoid a doxygen warning.

2002-10-05 Saturday 10:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.22),
	  devref-print.doxyconf-latex.in (1.22), devref.doxyconf-html.in
	  (1.23): Added Include_Implementation_Details in the
	  ENABLED_SECTIONS of the developer reference.

2002-10-05 Saturday 10:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.7): Added specification on how to integrate an
	  end-user comment block with further comments for the developer
	  only.

2002-10-04 Friday 23:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.42): Notified new function for manipulation
	  LinExpression's.

2002-10-04 Friday 23:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: bbrz02widening14.cc (1.2), bbrz02widening15.cc (1.2):
	  Tests made silent.

2002-10-04 Friday 22:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.98): Cut away previous spurious commit on
	  the specification of generalized affine image. Added a missing
	  transposition sign.

2002-10-04 Friday 22:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.63): Typo corrected:
	  closure-point ==> closure_point.

2002-10-04 Friday 19:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.10): Updated.

2002-10-04 Friday 19:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.41): Report the news for PPL 0.4.2.

2002-10-04 Friday 18:53  Elisa Ricci

	* src/Polyhedron.cc (1.234): Modified the second technique of
	  Polyhedron::BBRZ02_widening_assign(): we add all the chosen rays
	  that satisfy the system of constraints `common_con_sys' to the
	  system of generators of `x'.

2002-10-04 Friday 18:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.126), bbrz02widening14.cc (1.1),
	  bbrz02widening15.cc (1.1): Added two new tests. The first one is
	  similar to bbrz02widening13, but this time the limit of the chain
	  of polyhedra is a bounded polyhedron.  The second one is similar
	  to the first one, but it is based on a chain of polyhedral cones.

2002-10-04 Friday 18:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.cc (1.14), LinExpression.defs.hh (1.55):
	  Added new function   LinExpression& operator*=(LinExpression& e,
	  const Integer& n); to multiply (in place) a given expression by
	  an Integer constant.

2002-10-04 Friday 15:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.97), tests/Makefile.am (1.125),
	  tests/bbrz02widening13.cc (1.1): Added a new test for the bbrz02
	  widening.

2002-10-04 Friday 12:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog, ChangeLog (ppl-0_4-branch.[3,7]): Mark
	  ChangeLog.

2002-10-04 Friday 11:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_4-branch.6): Updated.

2002-10-04 Friday 10:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.16): Require GCC 3.2 or later, require GMP 4.1 or
	  later version.

2002-10-04 Friday 10:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (ppl-0_4-branch.1): Require GCC 3.2 or later version.

2002-10-04 Friday 09:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_4-branch.5): Updated.

2002-10-04 Friday 09:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_4-branch.4): Version number bumped.

2002-10-04 Friday 09:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_4-branch.7): Try to release today.

2002-10-03 Thursday 17:58  Elisa Ricci

	* tests/: Makefile.am (1.124), exceptions1.cc (1.20),
	  exceptions2.cc (1.17), generalizedaffineimage9.cc (1.1): Added
	  some new tests for Polyhedron::generalized_affine_image(lhs, r,
	  rhs).

2002-10-03 Thursday 15:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.123), ascii_dump_load1.cc (1.3),
	  ascii_dump_load2.cc (1.3), files.cc (1.2), files.hh (1.2):
	  Several improvements.

2002-10-03 Thursday 15:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.122), ascii_dump_load3.cc (1.2), files.cc
	  (1.1), files.hh (1.1): Avoid spaghetti-coding.

2002-10-03 Thursday 15:01  Elisa Ricci

	* tests/generalizedaffineimage7.cc (1.3): Corrected the test: we
	  want "return 1" if there is at least a test that exits with
	  "return 1".

2002-10-03 Thursday 12:23  Elisa Ricci

	* tests/: Makefile.am (1.121), ascii_dump_load2.cc (1.2),
	  ascii_dump_load3.cc (1.1): Added a new test for
	  Polyhedron::ascii_dump() and Polyhedron::ascii_load().  Corrected
	  an error in the comment of ascii_dump_load2.cc.

2002-10-03 Thursday 12:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.233), src/Polyhedron.defs.hh (1.155),
	  tests/generalizedaffineimage1.cc (1.4),
	  tests/generalizedaffineimage7.cc (1.2): When the lhs of the
	  generalized affine image is an arbitrary LinExpression, there is
	  no need of having a denominator for the rhs.

2002-10-03 Thursday 12:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.96): Added missing transposition signs in
	  documentation of affine images.  Improved comment of generalized
	  affine images.

2002-10-03 Thursday 11:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.40): Reported the bug on minimization of
	  zero-dim-universe NNC polyhedra.

2002-10-03 Thursday 11:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (1.50): Fixed a couple of comments.

2002-10-03 Thursday 10:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS, doc/definitions.dox, src/ConSys.cc, src/Polyhedron.cc,
	  tests/Makefile.am, tests/minconstraints1.cc,
	  tests/minconstraints2.cc, tests/minconstraints3.cc,
	  tests/mingenerators1.cc, tests/mingenerators2.cc,
	  tests/mingenerators3.cc (ppl-0_4-branch.[6,1,4,7,4,1,1,1,1,1,1]):
	  Reported on the branch a couple of bugfixes and corresponding
	  tests.

2002-10-03 Thursday 09:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.95): Corrected the definition of affine
	  preimage.

2002-10-03 Thursday 04:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.13), config.sub (1.12): Updated.

2002-10-02 Wednesday 17:32  Elisa Ricci

	* tests/: Makefile.am (1.120), ascii_dump_load2.cc (1.1): Added a
	  new test to verify Polyhedron::ascii_load() and
	  Polyhedron::ascii_dump().

2002-10-02 Wednesday 16:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.232): Fixed a typo in a comment.

2002-10-02 Wednesday 16:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.231): The implementation of
	  generalized_affine_image(lhs, rel, rhs, denom) now handles some
	  special cases in a more efficient way.

2002-10-02 Wednesday 16:14  Elisa Ricci

	* src/Polyhedron.cc (1.230): In
	  Polyhedron::strongly_minimize_constraints() and
	  Polyhedron::strongly_minimize_generators() corrected the bug
	  shown by minconstraints3.cc and mingenerators3.cc: now we verify
	  if the polyhedron is not empty and zero-dimensional.

2002-10-02 Wednesday 16:10  Elisa Ricci

	* tests/: Makefile.am (1.119), minconstraints3.cc (1.1),
	  mingenerators3.cc (1.1): The test minconstraints3.cc shows a bug
	  in Polyhedron::strongly_minimize_constraints().  The test
	  mingenerators3.cc shows a bug in
	  Polyhedron::strongly_minimize_generators().

2002-10-02 Wednesday 15:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.118): Expect addgenerators11 to fail.

2002-10-02 Wednesday 14:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/exceptions1.cc (1.19): Fixed a few comments on tests about
	  generalized_affine_image.

2002-10-02 Wednesday 14:40  Elisa Ricci

	* tests/generalizedaffineimage8.cc (1.2): Corrected an error in the
	  comment of the test: the relation is `>' and not `<'.

2002-10-02 Wednesday 14:39  Elisa Ricci

	* tests/: Makefile.am (1.117), generalizedaffineimage8.cc (1.1):
	  Added a new test for Polyhedron::generalized_affine_image(v, r,
	  e, d) in the case of non necessarily closed polyhedron and the
	  relation `>'.

2002-10-02 Wednesday 14:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.18), exceptions2.cc (1.16): Adapted to
	  the new interface of Polyhedron::generalized_affine_image().

2002-10-02 Wednesday 14:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.116), generalizedaffineimage3.cc (1.4),
	  generalizedaffineimage7.cc (1.1): Added a new test for method
	  Polyhedron::generalized_affine_image(lhs, relop, rhs, denum)
	  checking that, when lhs has a single variable, the current
	  implementation does have the same behavior of
	  Polyhedron::generalized_affine_image(var, relop, rhs, denum).

2002-10-02 Wednesday 14:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.115): Specify the source for
	  addgenerators11.

2002-10-02 Wednesday 14:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.114), addgenerators11.cc (1.1): New test
	  for Polyhedron::add_generators_and_minimize().

2002-10-02 Wednesday 12:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.229), src/Polyhedron.defs.hh (1.154),
	  src/globals.hh (1.23), tests/generalizedaffineimage1.cc (1.3),
	  tests/generalizedaffineimage2.cc (1.3),
	  tests/generalizedaffineimage3.cc (1.3),
	  tests/generalizedaffineimage4.cc (1.2),
	  tests/generalizedaffineimage5.cc (1.2),
	  tests/generalizedaffineimage6.cc (1.2): Added enumeration
	  Relation_Operator to encode the operator <, <=, ==, >=, >.  Used
	  the enumeration to specify the relation operator of methods
	  Polyhedron::generalized_affine_image().  Patched the tests to use
	  the enumeration instead of string encodings.

2002-10-02 Wednesday 12:05  Elisa Ricci

	* src/ConSys.cc (1.49): Modified
	  ConSys::adjust_topology_and_dimension() so that if the system of
	  constraints was sorted, does not contains strict inequalities and
	  is not necessarily closed and if the new topology is
	  NECESSARILY_CLOSED, we sort the system again.

2002-10-02 Wednesday 11:20  Elisa Ricci

	* src/ConSys.cc (1.48), tests/Makefile.am (1.113),
	  tests/addconstraints12.cc (1.1): Corrected an error in
	  ConSys::adjust_topology_and_dimension: now we erase the
	  constraints 0 <= \epsilon <= 1 if the system of constraints does
	  not contains strict inequalities and is not necessarily closed
	  and the new topology is NECESSARILY_CLOSED.  Added a test to
	  verify this function.

2002-10-02 Wednesday 10:19  Elisa Ricci

	* tests/topclosed3.cc (1.3): Added the comment to explain what this
	  test does.

2002-10-02 Wednesday 09:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/topclosed3.cc (1.2): New test made silent.

2002-10-02 Wednesday 09:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.112), topclosed3.cc (1.1): Added a new
	  test on the topological closure check.  It shows that an
	  unmatched closure point lying on the same line of a point, after
	  performing minimization, is converted by back_substitute() into
	  the corresponding matched closure point: this property is needed
	  to ensure the correctness of the current implementation.

2002-10-01 Tuesday 21:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.228), tests/Makefile.am (1.111),
	  tests/generalizedaffineimage6.cc (1.1): Added a first draft
	  implementation for method
	  Polyhedron::generalized_affine_image(const LinExpression& lhs,
					       const char* relation,
					     const LinExpression& rhs,
					   const Integer& denominator);
	  Added a first test to check if it works.

2002-10-01 Tuesday 14:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.94), src/Polyhedron.cc (1.227),
	  src/Polyhedron.defs.hh (1.153): The specification of the
	  generalized affine image operator further generalized to allow
	  for an arbitrary affine expression in the lhs.  Added the
	  declaration of this generalization (with a void implementation).

2002-10-01 Tuesday 11:56  Elisa Ricci

	* tests/: bbrz02widening6.cc (1.3), bbrz02widening7.cc (1.3):
	  Modified the polyhedron `known_result' according to the changes
	  of Polyhedron::BBRZ02_widening_assign().

2002-10-01 Tuesday 11:22  Elisa Ricci

	* src/Polyhedron.cc (1.226), tests/Makefile.am (1.110),
	  tests/generalizedaffineimage5.cc (1.1): Corrected an error in
	  Polyhedron::generalized_affine_image().  Added a test to verify
	  this function.

2002-09-30 Monday 11:32  Elisa Ricci

	* tests/: Makefile.am (1.109), affinepreimage6.cc (1.2),
	  affinepreimage7.cc (1.1), exceptions1.cc (1.17), exceptions2.cc
	  (1.15), polyhull7.cc (1.1): Added new tests for some methods of
	  the class Polyhedron.  Corrected a comment in the test
	  affinepreimage6.cc.

2002-09-29 Sunday 15:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.cc (1.47), src/ConSys.defs.hh (1.68), src/GenSys.cc
	  (1.67), src/GenSys.defs.hh (1.81), src/Matrix.cc (1.44),
	  src/Matrix.defs.hh (1.36), src/Poly_Con_Relation.cc (1.4),
	  src/Poly_Con_Relation.defs.hh (1.15), src/Poly_Gen_Relation.cc
	  (1.4), src/Poly_Gen_Relation.defs.hh (1.14), src/Polyhedron.cc
	  (1.225), src/Polyhedron.defs.hh (1.152), src/SatMatrix.cc (1.21),
	  src/SatMatrix.defs.hh (1.25), src/Status.cc (1.15),
	  src/Status.defs.hh (1.22), tests/ascii_dump_load1.cc (1.2): The
	  ASCII_dump() and ASCII_load() methods have been renamed
	  ascii_dump() and ascii_load().

2002-09-29 Sunday 11:16  Elisa Ricci

	* src/Status.cc (1.14), tests/Makefile.am (1.108),
	  tests/ascii_dump_load1.cc (1.1): Corrected an error in
	  Status::ASCII_load(std::istream& s).	Added a test to verify
	  Polyhedron::ASCII_dump(std::ostream& s) and
	  Polyhedron::ASCII_load(std::istream& s).

2002-09-27 Friday 20:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.39), tests/affineimage5.cc (1.2): Test affineimage5 made
	  silent.  The bug affecting affine_image() could have produced
	  wrong results (not just violate a library invariant).

2002-09-27 Friday 20:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS, src/ConSys.cc, src/GenSys.cc, src/Polyhedron.cc,
	  tests/Makefile.am, tests/affineimage4.cc, tests/affineimage5.cc
	  (ppl-0_4-branch.[5,3,3,6,3,1,1]): The correction of the bug
	  affecting Polyhedron::affine_image() and
	  Polyhedron::affine_preimage() reported on ppl-0_4-branch.

2002-09-27 Friday 15:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.93), src/Polyhedron.defs.hh (1.151): Fixed
	  documentation reference for the generalized_affine_image
	  operator.

2002-09-27 Friday 15:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.224): Methods Polyhedron::affine_image() and
	  Polyhedron::affine_preimage() now only call
	  ConSys::affine_preimage() and GenSys::affine_image() with a
	  strictly positive denominator.  Added draft implementation of
	  generalized_affine_image() for the case of a strict relation
	  operator (only for NNC polyhedra).

2002-09-27 Friday 15:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.46), GenSys.cc (1.66): Private methods
	  ConSys::affine_preimage() and GenSys::affine_image() now assume
	  that the third argument is a _positive_ Integer.

2002-09-27 Friday 15:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.107), affineimage5.cc (1.1),
	  generalizedaffineimage1.cc (1.2), generalizedaffineimage2.cc
	  (1.2), generalizedaffineimage3.cc (1.2),
	  generalizedaffineimage4.cc (1.1): Added new tests and adjusted
	  the known_results of generalizedaffineimage* to match the
	  specification.

2002-09-27 Friday 09:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.92), src/Polyhedron.cc (1.223),
	  src/Polyhedron.defs.hh (1.150): Method generalized_affine_image()
	  reimplemented to match its specification.  The doxygen
	  specification improved.

2002-09-27 Friday 09:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.38): Reported the bugfix for Polyhedron::affine_image().

2002-09-27 Friday 09:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.65): Corrected a bug in GenSys::affine_image()
	  whereby we were creating points having a negative divisor when
	  the denominator of the affine transformation was negative.

2002-09-27 Friday 09:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.106), affineimage4.cc (1.1): New test
	  showing a bug in Polyhedron::affine_image() when the divisor is
	  negative.

2002-09-26 Thursday 15:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.222): The draft implementation of
	  Polyhedron::generalized_affine_image() extended to work with NNC
	  polyhedra.

2002-09-26 Thursday 13:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.105), generalizedaffineimage3.cc (1.1):
	  Added a test for generalized_affine_image where the points of the
	  polyhedron have non-integral coordinates.

2002-09-26 Thursday 12:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.104), generalizedaffineimage1.cc (1.1),
	  generalizedaffineimage2.cc (1.1): Added a couple of tests for the
	  new generalized_affine_image operator.

2002-09-26 Thursday 12:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.91): Added draft specification of the
	  generalized affine image operator.

2002-09-26 Thursday 12:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.221), Polyhedron.defs.hh (1.149): Added a
	  first draft implementation of the generalized_affine_image
	  operator.  Current implementation should work correctly for
	  C_Polyhedron.

2002-09-26 Thursday 12:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.defs.hh (1.54), LinExpression.inlines.hh
	  (1.24): Added methods to provide read-only access to the
	  coefficients and the inhomogeneous term of a LinExpression.

2002-09-25 Wednesday 18:25  Elisa Ricci

	* src/Polyhedron.cc (1.220), tests/Makefile.am (1.103),
	  tests/bbrz02widening12.cc (1.1): Corrected an improved the third
	  technique of Polyhedron::BBRZ02_widening_assign().  Added a test
	  to verify this technique.

2002-09-25 Wednesday 16:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.90): Greatly improved the matrix in the
	  explanation of affine images and preimages.

2002-09-25 Wednesday 14:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.37): Removed a few repetitions in the list of bugfixes.

2002-09-25 Wednesday 10:12  Elisa Ricci

	* src/: Integer.defs.hh (1.9), Integer.inlines.hh (1.8),
	  Polyhedron.cc (1.219): Added the functions void
	  sqrt_assign(Integer& x) and void sqrt_assign(Integer& x, const
	  Integer& y) in Integer to compute he truncated integer part of
	  the root of an Integer.  Used the function sqrt_assign(Integer&)
	  in the first technique of BBRZ02_widening_assign().

2002-09-24 Tuesday 19:05  Elisa Ricci

	* src/: Integer.defs.hh (1.8), Integer.inlines.hh (1.7),
	  Polyhedron.cc (1.218): Added the functions lcm_assign(Integer& x,
	  const Integer& y) and lcm_assign(Integer& x, const Integer& y,
	  const Integer& z) in Integer.  Modified the function
	  Polyhedron::BBRZ02_widening_assing() so that in the first
	  technique we choose the constraints to add in the right system
	  and we normalize the vectors using a bad approximation of the
	  norm; corrected also an error in the third technique in the case
	  of rays with negative coefficients.

2002-09-24 Tuesday 15:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS, src/GenSys.cc, src/Polyhedron.cc (ppl-0_4-branch.[4,2,5]):
	  Reported to the ppl-0_4-branch the corrections to a couple of
	  bugs affecting methods GenSys::insert(const Generator& ) and
	  Polyhedron::add_generator(const Generator& ).

2002-09-24 Tuesday 10:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc, tests/Makefile.am, tests/relations14.cc
	  (ppl-0_4-branch.[2,2,1]): Added the test showing a bug when
	  invoking method   Polyhedron::relation_with(const Generator& ).
	  Implemented the correction in method
	  ConSys::satisfies_all_constraints(const Generator& ).

2002-09-23 Monday 17:15  Elisa Ricci

	* tests/: Makefile.am (1.102), relations11.cc (1.2), relations15.cc
	  (1.1), relations16.cc (1.1): Added two tests for the methods of
	  the class GenSys and corrected an error in the comment of the
	  test relations11.cc.

2002-09-23 Monday 12:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.36), src/ConSys.cc (1.45): Corrected a bug in
	  ConSys::satisfies_all_constraints(const Generator& ) which was
	  affecting the public method	Polyhedron::relation_with(const
	  Generator& ).  The bug reported on the NEWS file.

2002-09-23 Monday 11:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.101), relations13.cc (1.1), relations14.cc
	  (1.1): A couple of new tests. relations14 shows a bug in the
	  implementation of ConSys::satisfies_all_constraints(const
	  Generator& g) const.

2002-09-20 Friday 11:54  Elisa Ricci

	* tests/: Makefile.am (1.100), addconstraints11.cc (1.8),
	  affinepreimage6.cc (1.1), relations10.cc (1.2), relations12.cc
	  (1.1): Added other tests for some methods of the classes ConSys
	  and GenSys.  Corrected the comment of the test in relations10.cc.

2002-09-19 Thursday 17:16  Elisa Ricci

	* tests/: Makefile.am (1.99), affineimage3.cc (1.1),
	  affinepreimage5.cc (1.1), relations10.cc (1.1), relations11.cc
	  (1.1): Added some tests for the methods of the classes
	  Polyhedron, ConSys and GenSys.

2002-09-18 Wednesday 11:54  Elisa Ricci

	* tests/: Makefile.am (1.98), adddimensions11.cc (1.1),
	  exceptions2.cc (1.14): Added two other tests to verify the
	  methods of the class Polyhedron.

2002-09-18 Wednesday 10:27  Elisa Ricci

	* src/Polyhedron.cc (1.217): Made some little improvements to the
	  function Polyhedron::BBRZ02_widenin_assign().  Improved also some
	  comments of this function.

2002-09-17 Tuesday 18:44  Elisa Ricci

	* tests/: Makefile.am (1.97), contains1.cc (1.1), exceptions2.cc
	  (1.13), h79widening5.cc (1.2), minconstraints2.cc (1.2): Improved
	  some tests and added other tests to verify some methods of
	  Polyhedron.cc and C_Polyhedron.cc.

2002-09-17 Tuesday 11:29  Elisa Ricci

	* tests/: Makefile.am (1.96), addconstraints10.cc (1.7),
	  bbrz02widening10.cc (1.1), bbrz02widening11.cc (1.1),
	  h79widening5.cc (1.1), minconstraints2.cc (1.1),
	  mingenerators2.cc (1.1), timeelapse7.cc (1.1), topclosure2.cc
	  (1.1): Added other tests to verify some methods of Polyhedron.cc.

2002-09-12 Thursday 18:17  Elisa Ricci

	* tests/: Makefile.am (1.95), timeelapse6.cc (1.1): Added a new
	  test for the function Polyhedron::time_elapse_assign().

2002-09-12 Thursday 16:30  Elisa Ricci

	* src/Polyhedron.cc (1.216): Corrected an error in
	  Polyhedron::BBRZ02_widening_assign(): the new generator was added
	  to the polyhedron x instead of the polyhedron x2.

2002-09-12 Thursday 11:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.51): Try to fix a long-standing problem in the
	  generation of ppl_install.hh.

2002-09-11 Wednesday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS, STANDARDS, acinclude.m4, config.h.in, configure.ac,
	  doc/definitions.dox, interfaces/C/ppl_c.cc, interfaces/C/ppl_c.h,
	  interfaces/Prolog/Makefile.am,
	  interfaces/Prolog/Prolog_interface.dox,
	  interfaces/Prolog/clpq.pl, interfaces/Prolog/clpq2.pl,
	  interfaces/Prolog/pl_check.pl, interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/track_allocation.hh,
	  interfaces/Prolog/GNU/ppl_gprolog_sd.cc, m4/Makefile.am,
	  m4/ac_cxx_flexible_arrays.m4, src/AskTell.defs.hh,
	  src/AskTell.inlines.hh, src/BoundingBox.cc,
	  src/BoundingBox.defs.hh, src/BoundingBox.inlines.hh,
	  src/C_Polyhedron.defs.hh, src/C_Polyhedron.inlines.hh,
	  src/ConSys.cc, src/ConSys.defs.hh, src/ConSys.inlines.hh,
	  src/Constraint.cc, src/Constraint.defs.hh,
	  src/Constraint.inlines.hh, src/Determinate.defs.hh,
	  src/Determinate.inlines.hh, src/GenSys.cc, src/GenSys.defs.hh,
	  src/GenSys.inlines.hh, src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/Init.cc, src/Init.defs.hh,
	  src/Init.inlines.hh, src/Interval.defs.hh, src/LCompare.defs.hh,
	  src/LinExpression.cc, src/LinExpression.defs.hh,
	  src/LinExpression.inlines.hh, src/Makefile.am, src/Matrix.cc,
	  src/Matrix.defs.hh, src/Matrix.inlines.hh,
	  src/NNC_Polyhedron.defs.hh, src/NNC_Polyhedron.inlines.hh,
	  src/Poly_Con_Relation.cc, src/Poly_Con_Relation.defs.hh,
	  src/Poly_Gen_Relation.cc, src/Poly_Gen_Relation.defs.hh,
	  src/Polyhedron.cc, src/Polyhedron.defs.hh,
	  src/Polyhedron.inlines.hh, src/PowerSet.defs.hh,
	  src/PowerSet.inlines.hh, src/Row.cc, src/Row.defs.hh,
	  src/Row.inlines.hh, src/SatMatrix.cc, src/SatMatrix.defs.hh,
	  src/SatMatrix.inlines.hh, src/SatRow.defs.hh,
	  src/SatRow.inlines.hh, src/Status.cc, src/Status.defs.hh,
	  src/Variable.cc, src/Variable.defs.hh, src/Variable.inlines.hh,
	  src/conversion.cc, src/globals.cc, src/globals.hh,
	  src/initializer.hh, src/minimize.cc, src/ppl_header.middle,
	  src/simplify.cc, tests/CbecomesNNC1.cc, tests/Makefile.am,
	  tests/addconstraint1.cc, tests/addconstraints2.cc,
	  tests/addconstraints4.cc, tests/addconstraints5.cc,
	  tests/addconstraints6.cc, tests/addconstraints7.cc,
	  tests/addconstraints8.cc, tests/addconstraints9.cc,
	  tests/adddimensions1.cc, tests/adddimensions10.cc,
	  tests/adddimensions2.cc, tests/adddimensions3.cc,
	  tests/adddimensions4.cc, tests/adddimensions5.cc,
	  tests/adddimensions6.cc, tests/adddimensions7.cc,
	  tests/adddimensions8.cc, tests/adddimensions9.cc,
	  tests/addgenerator1.cc, tests/addgenerator2.cc,
	  tests/addgenerators10.cc, tests/addgenerators3.cc,
	  tests/addgenerators4.cc, tests/addgenerators5.cc,
	  tests/addgenerators6.cc, tests/addgenerators7.cc,
	  tests/addgenerators9.cc, tests/affineimage1.cc,
	  tests/affineimage2.cc, tests/affinepreimage1.cc,
	  tests/affinepreimage2.cc, tests/affinepreimage3.cc,
	  tests/affinepreimage4.cc, tests/append1.cc, tests/append2.cc,
	  tests/bbrz02widening1.cc, tests/bbrz02widening2.cc,
	  tests/bbrz02widening3.cc, tests/bbrz02widening4.cc,
	  tests/bbrz02widening5.cc, tests/bbrz02widening6.cc,
	  tests/bbrz02widening7.cc, tests/bbrz02widening8.cc,
	  tests/bbrz02widening9.cc, tests/bounded1.cc,
	  tests/boundingbox1.cc, tests/boundingbox2.cc, tests/bounds1.cc,
	  tests/bounds2.cc, tests/concatenate2.cc, tests/concatenate3.cc,
	  tests/concatenate4.cc, tests/constraints1.cc,
	  tests/constraints2.cc, tests/constraints3.cc, tests/empty1.cc,
	  tests/exceptions1.cc, tests/exceptions2.cc, tests/generators3.cc,
	  tests/generators4.cc, tests/generators5.cc,
	  tests/h79widening4.cc, tests/inclusion2.cc,
	  tests/intersection2.cc, tests/intersection3.cc,
	  tests/intersection4.cc, tests/intersection5.cc,
	  tests/intersection6.cc, tests/intersection8.cc,
	  tests/intersection9.cc, tests/limitedh79widening1.cc,
	  tests/limitedh79widening2.cc, tests/limitedh79widening3.cc,
	  tests/memory1.cc, tests/minconstraints1.cc,
	  tests/mingenerators1.cc, tests/permute.cc,
	  tests/polydifference1.cc, tests/polydifference2.cc,
	  tests/polydifference3.cc, tests/polydifference4.cc,
	  tests/polydifference5.cc, tests/polydifference6.cc,
	  tests/polyhull1.cc, tests/polyhull2.cc, tests/polyhull3.cc,
	  tests/polyhull5.cc, tests/polyhull6.cc, tests/relations1.cc,
	  tests/relations2.cc, tests/relations3.cc, tests/relations4.cc,
	  tests/relations5.cc, tests/relations6.cc, tests/relations7.cc,
	  tests/relations8.cc, tests/relations9.cc, tests/removedim4.cc,
	  tests/removedim5.cc, tests/removedim6.cc, tests/removedim7.cc,
	  tests/removedim8.cc, tests/removedim9.cc, tests/timeelapse1.cc,
	  tests/timeelapse2.cc, tests/timeelapse3.cc, tests/timeelapse4.cc,
	  tests/timeelapse5.cc, tests/topclosed1.cc, tests/topclosed2.cc,
	  tests/topclosure1.cc, tests/universe1.cc, tests/universe2.cc,
	  tests/universe3.cc, tests/universe4.cc, tests/universe5.cc,
	  tests/universe6.cc, tests/watchdog1.cc
	  (alt_nnc.[3,1,1,2,2,1,3,3,1,1,1,1,1,2,2,1,1,1,2,2,1,2,2,2,2,5,4,3,4,4,3,4,4,7,4,2,5,5,3,1,2,2,2,2,1,2,2,1,1,2,2,2,2,1,2,1,2,16,5,5,3,3,1,2,2,1,2,2,2,2,1,2,1,2,2,1,1,2,2,2,1,1,1,2,1,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,1,1,1,1,1,2,2,2,2,2,1,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,2,2,3,1,1,2,2,1,1,1,1,2,2,2,1,1,1,1,1,2,2,2,2,2,1,1,2,2,1,2,1,1,2,2,2,1,1,1,1,2,2,2,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,2,2,2,2,2,1,1,1,2,2,2,2,2,2,2]):
	  Merged changes in main trunk between tags
	  "second_merge_to_alt_nnc" and "third_merge_to_alt_nnc".

2002-09-11 Wednesday 19:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.63): Fixed a bug whereby the configuration
	  options --enable-assertions and --enable-more-assertions were not
	  working properly.

2002-09-11 Wednesday 14:51  Elisa Ricci

	* tests/bbrz02widening9.cc (1.2): Corrected this test: to built the
	  increasing chain q_i we must do the widening between q_i_minus_1
	  and the poly_hull of q_i_minus_1 and p_i (and not the widening
	  between p_i and the poly_hull of q_i_minus_1 and p_i).

2002-09-11 Wednesday 12:55  Elisa Ricci

	* src/: Polyhedron.cc (1.215), Polyhedron.defs.hh (1.148): Added
	  the function static bool is_BBRZ02_stabilizing(const Polyhedron&
	  x, const Polyhedron& y).  Used this new function in
	  Polyhedron::BBRZ02_widening_assign().

2002-09-10 Tuesday 23:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.214): A couple of comments adjusted in
	  add_generator() and bbrz_widening_assign().

2002-09-10 Tuesday 18:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.35), doc/definitions.dox (1.89),
	  interfaces/Prolog/Makefile.am (1.20),
	  interfaces/Prolog/Prolog_interface.dox (1.62),
	  interfaces/Prolog/clpq.pl (1.13), interfaces/Prolog/clpq2.pl
	  (1.23), interfaces/Prolog/pl_check.pl (1.23),
	  interfaces/Prolog/ppl_prolog.icc (1.65),
	  interfaces/Prolog/track_allocation.hh (1.10),
	  src/AskTell.inlines.hh (1.9), src/C_Polyhedron.defs.hh (1.17),
	  src/ConSys.defs.hh (1.67), src/Constraint.cc (1.32),
	  src/Constraint.defs.hh (1.71), src/conversion.cc (1.32),
	  tests/addconstraints2.cc (1.16), tests/adddimensions10.cc (1.4),
	  tests/adddimensions5.cc (1.5), tests/adddimensions6.cc (1.5),
	  tests/adddimensions7.cc (1.5), tests/adddimensions8.cc (1.3),
	  tests/adddimensions9.cc (1.3), tests/addgenerator1.cc (1.2),
	  tests/addgenerator2.cc (1.2), tests/addgenerators7.cc (1.6),
	  tests/addgenerators9.cc (1.3), tests/bbrz02widening1.cc (1.2),
	  tests/bbrz02widening2.cc (1.2), tests/bbrz02widening3.cc (1.2),
	  tests/bbrz02widening6.cc (1.2), tests/bbrz02widening7.cc (1.2),
	  tests/bbrz02widening8.cc (1.2), tests/bounded1.cc (1.7),
	  tests/boundingbox1.cc (1.21), tests/boundingbox2.cc (1.11),
	  tests/bounds1.cc (1.3), tests/concatenate4.cc (1.3),
	  tests/constraints1.cc (1.3), tests/constraints2.cc (1.3),
	  tests/constraints3.cc (1.3): Lots of trailing blanks removed.

2002-09-10 Tuesday 18:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/topclosed1.cc (1.2): Indentation improvements.

2002-09-10 Tuesday 18:05  Elisa Ricci

	* src/Polyhedron.cc (1.213): Simplify the function
	  `Polyhedron::add_generator(g)' in the case of a necessarily
	  closed empty polyhedron and of a non-necessarily closed
	  generator.

2002-09-10 Tuesday 18:00  Elisa Ricci

	* tests/: Makefile.am (1.94), topclosed1.cc (1.1), topclosed2.cc
	  (1.1): Added two tests for the method
	  `Polyhedron::is_topologically_closed()'.

2002-09-10 Tuesday 17:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.15): The correction of the bug on
	  Polyhedron::operator<=() reported on the alt_nnc branch.

2002-09-10 Tuesday 16:46  Elisa Ricci

	* tests/: Makefile.am (1.93), addgenerator1.cc (1.1),
	  addgenerator2.cc (1.1), addgenerators10.cc (1.1), exceptions1.cc
	  (1.16), exceptions2.cc (1.12), h79widening4.cc (1.1): Added some
	  other tests to verify the functions of Polyhedron.cc.

2002-09-10 Tuesday 14:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (ppl-0_4-branch.4):
	  Parma_Polyhedra_Library::dimension_type is undefined in PPL
	  0.4.x.

2002-09-10 Tuesday 14:48  Elisa Ricci

	* tests/: bounds2.cc (1.3), polydifference5.cc (1.3),
	  polydifference6.cc (1.2), polyhull5.cc (1.2), polyhull6.cc (1.2),
	  removedim8.cc (1.2), removedim9.cc (1.2), topclosure1.cc (1.2):
	  Added some explanations of what these tests do and improved the
	  `return' of the test bounds2.

2002-09-10 Tuesday 13:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (ppl-0_4-branch.3), NEWS (1.34): The correction
	  of the bug affecting Polyhedron::operator<=() reported on the
	  ppl_0_4-branch. Bug correction notified in the NEWS.

2002-09-10 Tuesday 12:33  Elisa Ricci

	* tests/: CbecomesNNC1.cc (1.2), Makefile.am (1.92),
	  addconstraint1.cc (1.2), addconstraints2.cc (1.15),
	  adddimensions10.cc (1.3), adddimensions8.cc (1.2),
	  adddimensions9.cc (1.2), addgenerators9.cc (1.2), bounds1.cc
	  (1.2), bounds2.cc (1.2), concatenate4.cc (1.2), constraints1.cc
	  (1.2), constraints2.cc (1.2), constraints3.cc (1.2),
	  generators3.cc (1.2), generators4.cc (1.2), generators5.cc (1.2),
	  intersection8.cc (1.2), intersection9.cc (1.2),
	  minconstraints1.cc (1.2), mingenerators1.cc (1.2),
	  polydifference4.cc (1.2), polydifference5.cc (1.2): Improved some
	  tests.

2002-09-10 Tuesday 12:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/adddimensions10.cc (1.2): The old `known_result' was wrong.
	  This was masking the bug in Polyhedron::operator<=().

2002-09-10 Tuesday 12:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.212): Correcting the bug in operator<=()
	  pointed out by test inclusion2.cc.

2002-09-10 Tuesday 11:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.91), inclusion2.cc (1.1): New test showing
	  a bug in Polyhedron::operator<=().

2002-09-09 Monday 18:00  Elisa Ricci

	* tests/: CbecomesNNC1.cc (1.1), Makefile.am (1.90),
	  addconstraint1.cc (1.1), addconstraints2.cc (1.14),
	  adddimensions10.cc (1.1), adddimensions8.cc (1.1),
	  adddimensions9.cc (1.1), addgenerators9.cc (1.1), bounds1.cc
	  (1.1), bounds2.cc (1.1), concatenate4.cc (1.1), constraints1.cc
	  (1.1), constraints2.cc (1.1), constraints3.cc (1.1),
	  exceptions1.cc (1.15), exceptions2.cc (1.11), generators3.cc
	  (1.1), generators4.cc (1.1), generators5.cc (1.1),
	  intersection8.cc (1.1), intersection9.cc (1.1),
	  minconstraints1.cc (1.1), mingenerators1.cc (1.1),
	  polydifference3.cc (1.1), polydifference4.cc (1.1),
	  polydifference5.cc (1.1), polydifference6.cc (1.1), polyhull5.cc
	  (1.1), polyhull6.cc (1.1), removedim8.cc (1.1), removedim9.cc
	  (1.1), topclosure1.cc (1.1): Added tests to verify some methods
	  of Polyhedron.cc and NNC_Polyhedron.cc.

2002-09-09 Monday 17:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.211), src/Polyhedron.defs.hh (1.147),
	  tests/Makefile.am (1.89), tests/bbrz02widening1.cc (1.1),
	  tests/bbrz02widening2.cc (1.1), tests/bbrz02widening3.cc (1.1),
	  tests/bbrz02widening4.cc (1.1), tests/bbrz02widening5.cc (1.1),
	  tests/bbrz02widening6.cc (1.1), tests/bbrz02widening7.cc (1.1),
	  tests/bbrz02widening8.cc (1.1), tests/bbrz02widening9.cc (1.1):
	  Initial implementation of the new widening.

2002-09-04 Wednesday 20:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.43), Row.inlines.hh (1.33): Changes to support
	  C++ compilers not providing flexible arrays.

2002-09-04 Wednesday 12:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.210): Method OK() adjusted to behave
	  correctly on an empty polyhedron having a single trivially false
	  constraint.

2002-09-03 Tuesday 20:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* acinclude.m4 (1.3), config.h.in (1.18), configure.ac (1.62),
	  m4/Makefile.am (1.7), m4/ac_cxx_flexible_arrays.m4 (1.1),
	  src/Row.defs.hh (1.55), src/Row.inlines.hh (1.32): Initial
	  support for compilers not providing flexible arrays.	(Flexible
	  arrays are standard in C99 but not in the current C++ standard.)

2002-09-03 Tuesday 19:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.17), configure.ac (1.61): New configuration option
	  --enable-more-assertions: for the time being it enables more
	  complete debugging of the class Row by defining EXTRA_ROW_DEBUG.

2002-09-03 Tuesday 18:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.3): Computing also the constraints
	  for the dual of hypercubes.

2002-09-02 Monday 22:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.16), configure.ac (1.60), src/ppl_header.middle
	  (1.2): Some portability enhancements.

2002-09-02 Monday 22:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.defs.hh (1.16): Friend declaration fixed.

2002-09-02 Monday 22:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/LCompare.defs.hh (1.4): Use public inheritance.

2002-09-02 Monday 17:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.33), interfaces/C/ppl_c.cc (1.46), interfaces/C/ppl_c.h
	  (1.46), src/initializer.hh (1.4): Identifiers containing a double
	  underscore ("__") are reserved: we no longer use them.

2002-09-02 Monday 16:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.defs.hh (1.77), LinExpression.defs.hh (1.53):
	  Illegal friend function declarations removed and substituted with
	  (still unsatisfactory) friend class declarations.

2002-09-02 Monday 16:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.inlines.hh (1.31): Fixed typo in comment.

2002-09-01 Sunday 19:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog_sd.cc (1.9): Encode addresses
	  with terms of the form `$address'(High, Low) instead of
	  [High|Low].

2002-09-01 Sunday 15:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* STANDARDS (1.6), interfaces/C/ppl_c.cc (1.45),
	  interfaces/C/ppl_c.h (1.45), interfaces/Prolog/ppl_prolog.icc
	  (1.64), interfaces/Prolog/track_allocation.hh (1.9),
	  src/AskTell.defs.hh (1.8), src/BoundingBox.defs.hh (1.6),
	  src/C_Polyhedron.inlines.hh (1.12), src/ConSys.defs.hh (1.66),
	  src/ConSys.inlines.hh (1.26), src/Constraint.defs.hh (1.70),
	  src/Determinate.defs.hh (1.15), src/Determinate.inlines.hh
	  (1.17), src/GenSys.defs.hh (1.80), src/GenSys.inlines.hh (1.28),
	  src/Generator.cc (1.39), src/Generator.defs.hh (1.76),
	  src/Interval.defs.hh (1.8), src/Matrix.cc (1.43),
	  src/Matrix.defs.hh (1.35), src/NNC_Polyhedron.inlines.hh (1.14),
	  src/Poly_Con_Relation.defs.hh (1.14),
	  src/Poly_Gen_Relation.defs.hh (1.13), src/Polyhedron.cc (1.209),
	  src/Polyhedron.defs.hh (1.146), src/SatMatrix.cc (1.20),
	  src/conversion.cc (1.31), src/minimize.cc (1.24), src/simplify.cc
	  (1.18), tests/append1.cc (1.15), tests/append2.cc (1.16),
	  tests/empty1.cc (1.10), tests/exceptions1.cc (1.14),
	  tests/permute.cc (1.22): Avoid source lines longer than 78
	  characters.

2002-09-01 Sunday 15:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatRow.cc (1.11), SatRow.defs.hh (1.20), SatRow.inlines.hh
	  (1.20): Use the right integral types.  Avoid source lines longer
	  than 78 characters.

2002-09-01 Sunday 15:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.44), GenSys.cc (1.64), Generator.defs.hh
	  (1.75), LinExpression.defs.hh (1.52): Minor formatting changes.

2002-09-01 Sunday 15:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.46): Make sure inlines are defined
	  before they are used.

2002-09-01 Sunday 13:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.32), configure.ac (1.59), interfaces/C/ppl_c.cc (1.44),
	  interfaces/C/ppl_c.h (1.44), interfaces/Prolog/ppl_prolog.icc
	  (1.63), interfaces/Prolog/track_allocation.hh (1.8),
	  src/BoundingBox.cc (1.3), src/BoundingBox.defs.hh (1.5),
	  src/BoundingBox.inlines.hh (1.6), src/C_Polyhedron.defs.hh
	  (1.16), src/C_Polyhedron.inlines.hh (1.11), src/ConSys.cc (1.43),
	  src/ConSys.defs.hh (1.65), src/ConSys.inlines.hh (1.25),
	  src/Constraint.cc (1.31), src/Constraint.defs.hh (1.69),
	  src/Constraint.inlines.hh (1.41), src/Determinate.defs.hh (1.14),
	  src/Determinate.inlines.hh (1.16), src/GenSys.cc (1.63),
	  src/GenSys.defs.hh (1.79), src/GenSys.inlines.hh (1.27),
	  src/Generator.cc (1.38), src/Generator.defs.hh (1.74),
	  src/Generator.inlines.hh (1.38), src/Init.cc (1.2),
	  src/Init.defs.hh (1.6), src/LinExpression.cc (1.13),
	  src/LinExpression.defs.hh (1.51), src/LinExpression.inlines.hh
	  (1.23), src/Makefile.am (1.50), src/Matrix.cc (1.42),
	  src/Matrix.defs.hh (1.34), src/Matrix.inlines.hh (1.27),
	  src/NNC_Polyhedron.defs.hh (1.19), src/NNC_Polyhedron.inlines.hh
	  (1.13), src/Polyhedron.cc (1.208), src/Polyhedron.defs.hh
	  (1.145), src/Polyhedron.inlines.hh (1.45), src/PowerSet.defs.hh
	  (1.16), src/PowerSet.inlines.hh (1.21), src/Row.cc (1.42),
	  src/Row.defs.hh (1.54), src/Row.inlines.hh (1.30),
	  src/SatMatrix.cc (1.19), src/SatMatrix.defs.hh (1.24),
	  src/SatMatrix.inlines.hh (1.16), src/SatRow.cc (1.10),
	  src/SatRow.defs.hh (1.19), src/SatRow.inlines.hh (1.19),
	  src/Variable.cc (1.8), src/Variable.defs.hh (1.24),
	  src/Variable.inlines.hh (1.13), src/conversion.cc (1.30),
	  src/globals.cc (1.9), src/globals.hh (1.22), src/minimize.cc
	  (1.23), src/simplify.cc (1.17), tests/append1.cc (1.14),
	  tests/append2.cc (1.15), tests/boundingbox1.cc (1.20),
	  tests/intersection2.cc (1.4), tests/memory1.cc (1.8),
	  tests/permute.cc (1.21), tests/watchdog1.cc (1.11): No longer
	  abuse `size_t'.  The new type `dimension_type' is an unsigned
	  integral type for representing space dimensions.  The new
	  function dimension_type max_space_dimension() returns the maximum
	  space dimension this library can handle.

2002-08-22 Thursday 15:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.61), pl_check.pl
	  (1.22): Updated for concatenate_assign.

2002-08-22 Thursday 10:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.20): PowerSet<CS>::add_constraint()
	  and PowerSet<CS>::add_constraints() fixed.

2002-08-22 Thursday 01:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.2): Some more tests.

2002-08-20 Tuesday 17:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.19): Several corrections.

2002-08-19 Monday 22:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.144): Avoid unnecessary qualification.

2002-08-19 Monday 19:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.42), ConSys.defs.hh (1.64), GenSys.cc (1.62),
	  GenSys.defs.hh (1.78), Matrix.cc (1.41), Matrix.defs.hh (1.33),
	  Poly_Con_Relation.cc (1.3), Poly_Con_Relation.defs.hh (1.13),
	  Poly_Gen_Relation.cc (1.3), Poly_Gen_Relation.defs.hh (1.12),
	  Polyhedron.cc (1.207), SatMatrix.cc (1.18), SatMatrix.defs.hh
	  (1.23), Status.cc (1.13): Rewriting of all input/output functions
	  and operators completed.

2002-08-19 Monday 16:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.206), Status.cc (1.12), Status.defs.hh
	  (1.21): The input and output operators on Status have been
	  replaced by methods void ASCII_dump(std::ostream&) const and bool
	  ASCII_load(std::istream&).

2002-08-19 Monday 16:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.143): Comment corrected.

2002-08-19 Monday 15:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.205), Polyhedron.defs.hh (1.142): The
	  historical operators operator<<(std::ostream&, const Polyhedron&)
	  and oprator>>(std::istream&, Polyhedron&) have been replaced by
	  (internal) methods Polyhedron::ASCII_dump(std::ostream& s) and
	  ASCII_load(std::istream& s).	New version of
	  operator<<(std::ostream& s, const Polyhedron& ph): writes a
	  textual representation of \p ph on \p s: "false" is written if
	  `ph' is an empty polyhedron; "true" is written if `ph' is a
	  universe polyhedron; a minimized system of constraints defining
	  `ph' is written otherwise, all constraints in one row separated
	  by ", ".

2002-08-19 Monday 12:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Init.inlines.hh (1.5), Makefile.am (1.49), Variable.cc
	  (1.7), Variable.defs.hh (1.23), Variable.inlines.hh (1.12): Allow
	  the user to change the output function for Variable objects by
	  calling Variable::set_output_function().  Allow the user to
	  obtain a pointer to the current output function by calling
	  Variable::get_output_function().

2002-08-19 Monday 12:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.21): Obey the indentation rules.

2002-08-18 Sunday 22:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.88): We know nnc_limitedh79widening3 should
	  fail (for the time being).

2002-08-18 Sunday 22:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: addconstraints4.cc (1.8), addconstraints5.cc (1.9),
	  addconstraints6.cc (1.10), addconstraints7.cc (1.9),
	  addconstraints8.cc (1.9), addconstraints9.cc (1.10),
	  adddimensions1.cc (1.11), adddimensions2.cc (1.7),
	  adddimensions3.cc (1.9), adddimensions4.cc (1.7),
	  adddimensions5.cc (1.4), adddimensions6.cc (1.4),
	  adddimensions7.cc (1.4), addgenerators3.cc (1.9),
	  addgenerators4.cc (1.9), addgenerators5.cc (1.9),
	  addgenerators6.cc (1.9), addgenerators7.cc (1.5), affineimage1.cc
	  (1.9), affineimage2.cc (1.8), affinepreimage1.cc (1.8),
	  affinepreimage2.cc (1.8), affinepreimage3.cc (1.8),
	  affinepreimage4.cc (1.9), bounded1.cc (1.6), boundingbox1.cc
	  (1.19), boundingbox2.cc (1.10), concatenate2.cc (1.4),
	  concatenate3.cc (1.4), intersection3.cc (1.4), intersection4.cc
	  (1.4), intersection5.cc (1.4), intersection6.cc (1.4),
	  limitedh79widening1.cc (1.4), limitedh79widening2.cc (1.4),
	  limitedh79widening3.cc (1.2), polydifference1.cc (1.4),
	  polydifference2.cc (1.6), polyhull1.cc (1.4), polyhull2.cc (1.4),
	  polyhull3.cc (1.4), relations1.cc (1.6), relations2.cc (1.7),
	  relations3.cc (1.7), relations4.cc (1.7), relations5.cc (1.7),
	  relations6.cc (1.6), relations7.cc (1.6), relations8.cc (1.6),
	  relations9.cc (1.7), removedim4.cc (1.9), removedim5.cc (1.7),
	  removedim6.cc (1.9), removedim7.cc (1.4), timeelapse1.cc (1.5),
	  timeelapse2.cc (1.5), timeelapse3.cc (1.5), timeelapse4.cc (1.5),
	  timeelapse5.cc (1.5), universe1.cc (1.6), universe2.cc (1.7),
	  universe3.cc (1.7), universe4.cc (1.7), universe5.cc (1.8),
	  universe6.cc (1.5): Comments corrected.

2002-08-18 Sunday 18:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.14): Adjusted new constructors to
	  produce the new epsilon representations.

2002-08-18 Sunday 16:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.87), limitedh79widening3.cc (1.1): New
	  test showing an incongruence in the behavior of the limited
	  widening operations in C and NNC polyhedra, respectively.

2002-08-17 Saturday 18:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.41): Properly terminate messages.

2002-08-17 Saturday 18:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.15), PowerSet.inlines.hh (1.18): Define
	  `reverse_iterator' and `const_reverse_iterator'.  New methods
	  rbegin() and rend().	New method definitely_contains(const CS&).
	  First prototype of method limited_H79_widening_assign(const
	  PowerSet&, ConSys&).

2002-08-17 Saturday 18:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.13), Determinate.inlines.hh (1.15):
	  New method is_definitely_equivalent_to(const Determinate&).

2002-08-17 Saturday 17:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.inlines.hh (1.14), PowerSet.inlines.hh (1.17):
	  PowerSet<CS>::omega_reduction() properly implemented.
	  operator<<(std::ostream&, const Determinate<PH>&) implemented so
	  as to obtain something readable.

2002-08-17 Saturday 13:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS, config.h.in, configure.ac, Watchdog/Watchdog.defs.hh,
	  Watchdog/Watchdog.inlines.hh, Watchdog/Watchdog.types.hh,
	  Watchdog/pwl_header.top, interfaces/C/ppl_c.cc,
	  interfaces/C/ppl_c.h, interfaces/Prolog/track_allocation.hh,
	  src/AskTell.defs.hh, src/AskTell.inlines.hh,
	  src/AskTell.types.hh, src/BoundingBox.defs.hh,
	  src/BoundingBox.inlines.hh, src/BoundingBox.types.hh,
	  src/C_Polyhedron.defs.hh, src/C_Polyhedron.inlines.hh,
	  src/C_Polyhedron.types.hh, src/ConSys.defs.hh,
	  src/ConSys.inlines.hh, src/ConSys.types.hh, src/Constraint.cc,
	  src/Constraint.defs.hh, src/Constraint.inlines.hh,
	  src/Constraint.types.hh, src/Determinate.defs.hh,
	  src/Determinate.inlines.hh, src/Determinate.types.hh,
	  src/GenSys.defs.hh, src/GenSys.inlines.hh, src/GenSys.types.hh,
	  src/Generator.cc, src/Generator.defs.hh,
	  src/Generator.inlines.hh, src/Generator.types.hh,
	  src/Init.defs.hh, src/Init.inlines.hh, src/Init.types.hh,
	  src/Integer.defs.hh, src/Integer.inlines.hh,
	  src/Integer.types.hh, src/Interval.defs.hh,
	  src/Interval.inlines.hh, src/Interval.types.hh,
	  src/LCompare.defs.hh, src/LCompare.inlines.hh,
	  src/LCompare.types.hh, src/LinExpression.defs.hh,
	  src/LinExpression.inlines.hh, src/LinExpression.types.hh,
	  src/Matrix.defs.hh, src/Matrix.inlines.hh, src/Matrix.types.hh,
	  src/NNC_Polyhedron.defs.hh, src/NNC_Polyhedron.inlines.hh,
	  src/NNC_Polyhedron.types.hh, src/Poly_Con_Relation.defs.hh,
	  src/Poly_Con_Relation.inlines.hh, src/Poly_Con_Relation.types.hh,
	  src/Poly_Gen_Relation.defs.hh, src/Poly_Gen_Relation.inlines.hh,
	  src/Poly_Gen_Relation.types.hh, src/Polyhedron.cc,
	  src/Polyhedron.defs.hh, src/Polyhedron.inlines.hh,
	  src/Polyhedron.types.hh, src/PowerSet.defs.hh,
	  src/PowerSet.inlines.hh, src/PowerSet.types.hh, src/Row.defs.hh,
	  src/Row.inlines.hh, src/Row.types.hh, src/SatMatrix.defs.hh,
	  src/SatMatrix.inlines.hh, src/SatMatrix.types.hh,
	  src/SatRow.defs.hh, src/SatRow.inlines.hh, src/SatRow.types.hh,
	  src/Status.defs.hh, src/Status.inlines.hh, src/Status.types.hh,
	  src/Topology.hh, src/Variable.defs.hh, src/Variable.inlines.hh,
	  src/Variable.types.hh, src/globals.hh, src/initializer.hh,
	  src/ppl_header.top, tests/ehandlers.hh, tests/mc91.cc,
	  tests/print.hh, tests/timings.hh
	  (alt_nnc.[2,1,1,1,1,1,1,2,2,1,1,1,1,1,1,1,1,1,1,3,2,1,3,3,2,1,3,3,1,3,1,1,4,4,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,13,4,4,1,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1]):
	  Merge changes from the trunk between tags `merge_to_alt_nnc' and
	  `second_merge_to_alt_nnc'.

2002-08-17 Saturday 13:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PowerSet.inlines.hh (1.16):
	  PowerSet<CS>::concatenate_assign() fixed.

2002-08-17 Saturday 11:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.12): In method
	  add_dimensions_and_project(), now adding the minus_epsilon_ray
	  instead of the zero_dim_closure_point.

2002-08-17 Saturday 10:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh, Polyhedron.inlines.hh (alt_nnc.[3,3]):
	  Method shuffle_dimensions(...) implemented in tha alt_nnc branch
	  too.

2002-08-16 Friday 22:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.31), interfaces/C/ppl_c.cc (1.43), interfaces/C/ppl_c.h
	  (1.43): The functions taking non-const arguments named
	  ppl_new_<T>_from_<S> have been renamed ppl_new_<T>_recycle_<S>,
	  where <T> is either "C" or "NNC", and <S> is either "ConSys" or
	  "GenSys".  The old names have been given to the new const
	  functions.

2002-08-16 Friday 22:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.defs.hh (1.12), src/Determinate.inlines.hh
	  (1.13), src/PowerSet.defs.hh (1.14), src/PowerSet.inlines.hh
	  (1.15), tests/mc91.cc (1.6): Another bit of Determinate and
	  PowerSet implementation written.

2002-08-16 Friday 22:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.30): Updated.

2002-08-16 Friday 22:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.cc (1.30), Generator.cc (1.37): Exception
	  messages improved.

2002-08-16 Friday 22:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.15), C_Polyhedron.inlines.hh
	  (1.10), NNC_Polyhedron.defs.hh (1.18), NNC_Polyhedron.inlines.hh
	  (1.12), Polyhedron.cc (1.204), Polyhedron.defs.hh (1.141): New
	  constructors to build polyhedra from read-only constraint and
	  generator systems: C_Polyhedron(const ConSys&),
	  C_Polyhedron(const GenSys&), NNC_Polyhedron(const ConSys&), and
	  NNC_Polyhedron(const GenSys&).  Some comments improved.  Poorly
	  chosen variable name changed.  Exception messages improved.

2002-08-16 Friday 16:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Determinate.defs.hh, Determinate.inlines.hh
	  (alt_nnc.[2,2]): Chnages needed to let China compile (taken from
	  the main trunk).

2002-08-16 Friday 16:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.11): Widening operators now should
	  work with the NER.

2002-08-16 Friday 10:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.10): Corrected a comment.

2002-08-16 Friday 10:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (alt_nnc.6): Corrected method
	  adjust_topology_and_dimension(), which could have introduced an
	  illegal (all zero's) ray when mapping a NNC to a C gensys.

2002-08-16 Friday 10:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/C_Polyhedron.cc (alt_nnc.1): Constructor
	  C_Polyhedron::C_Polyhedron(const NNC_Polyhedron& y) now is
	  implemented using generators (using constraints is not safe wrt
	  NER).

2002-08-16 Friday 10:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.15), configure.ac (1.58),
	  Watchdog/Watchdog.defs.hh (1.6), Watchdog/Watchdog.inlines.hh
	  (1.5), Watchdog/Watchdog.types.hh (1.2), Watchdog/pwl_header.top
	  (1.2), interfaces/C/ppl_c.h (1.42),
	  interfaces/Prolog/track_allocation.hh (1.7), src/AskTell.defs.hh
	  (1.7), src/AskTell.inlines.hh (1.8), src/AskTell.types.hh (1.3),
	  src/BoundingBox.defs.hh (1.4), src/BoundingBox.inlines.hh (1.5),
	  src/BoundingBox.types.hh (1.4), src/C_Polyhedron.defs.hh (1.14),
	  src/C_Polyhedron.inlines.hh (1.9), src/C_Polyhedron.types.hh
	  (1.5), src/ConSys.defs.hh (1.63), src/ConSys.inlines.hh (1.24),
	  src/ConSys.types.hh (1.5), src/Constraint.defs.hh (1.68),
	  src/Constraint.inlines.hh (1.40), src/Constraint.types.hh (1.5),
	  src/Determinate.defs.hh (1.11), src/Determinate.inlines.hh
	  (1.12), src/Determinate.types.hh (1.3), src/GenSys.defs.hh
	  (1.77), src/GenSys.inlines.hh (1.26), src/GenSys.types.hh (1.5),
	  src/Generator.defs.hh (1.73), src/Generator.inlines.hh (1.37),
	  src/Generator.types.hh (1.5), src/Init.defs.hh (1.5),
	  src/Init.inlines.hh (1.4), src/Init.types.hh (1.4),
	  src/Integer.defs.hh (1.7), src/Integer.inlines.hh (1.6),
	  src/Integer.types.hh (1.6), src/Interval.defs.hh (1.7),
	  src/Interval.inlines.hh (1.5), src/Interval.types.hh (1.4),
	  src/LCompare.defs.hh (1.3), src/LCompare.inlines.hh (1.3),
	  src/LCompare.types.hh (1.3), src/LinExpression.defs.hh (1.50),
	  src/LinExpression.inlines.hh (1.22), src/LinExpression.types.hh
	  (1.5), src/Matrix.defs.hh (1.32), src/Matrix.inlines.hh (1.26),
	  src/Matrix.types.hh (1.5), src/NNC_Polyhedron.defs.hh (1.17),
	  src/NNC_Polyhedron.inlines.hh (1.11), src/NNC_Polyhedron.types.hh
	  (1.5), src/Poly_Con_Relation.defs.hh (1.12),
	  src/Poly_Con_Relation.inlines.hh (1.8),
	  src/Poly_Con_Relation.types.hh (1.4),
	  src/Poly_Gen_Relation.defs.hh (1.11),
	  src/Poly_Gen_Relation.inlines.hh (1.8),
	  src/Poly_Gen_Relation.types.hh (1.4), src/Polyhedron.defs.hh
	  (1.140), src/Polyhedron.inlines.hh (1.44),
	  src/Polyhedron.types.hh (1.6), src/PowerSet.defs.hh (1.13),
	  src/PowerSet.inlines.hh (1.14), src/PowerSet.types.hh (1.3),
	  src/Row.defs.hh (1.53), src/Row.inlines.hh (1.29),
	  src/Row.types.hh (1.5), src/SatMatrix.defs.hh (1.22),
	  src/SatMatrix.inlines.hh (1.15), src/SatMatrix.types.hh (1.5),
	  src/SatRow.defs.hh (1.18), src/SatRow.inlines.hh (1.18),
	  src/SatRow.types.hh (1.5), src/Status.defs.hh (1.20),
	  src/Status.inlines.hh (1.10), src/Status.types.hh (1.5),
	  src/Topology.hh (1.6), src/Variable.defs.hh (1.22),
	  src/Variable.inlines.hh (1.11), src/Variable.types.hh (1.5),
	  src/globals.hh (1.20), src/initializer.hh (1.3),
	  src/ppl_header.top (1.4), tests/ehandlers.hh (1.5),
	  tests/print.hh (1.11), tests/timings.hh (1.2): According to the
	  C++ standard (Section 17.4), every name that starts with an
	  underscore is reserved to the implementation.  All the multiple
	  inclusion guards have been renamed (some missing ones have been
	  added).

2002-08-15 Thursday 11:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, GenSys.defs.hh, Generator.cc, Generator.defs.hh
	  (alt_nnc.[5,2,3,3]): Removed useless methods
	  Generator::is_matching_closure_point() and
	  GenSys::add_corresponding_points().

2002-08-15 Thursday 11:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.9): Corrected trivial errors in
	  is_topologically_closed() and topological_closure_assign().

2002-08-15 Thursday 11:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.10), Determinate.inlines.hh (1.11):
	  Implemented the functionality required for testing with China.

2002-08-15 Thursday 11:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.203), Polyhedron.defs.hh (1.139),
	  Polyhedron.inlines.hh (1.43): Added template <typename
	  PartialFunction> void Polyhedron::shuffle_dimensions(const
	  PartialFunction& pfunc).

2002-08-14 Wednesday 18:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.8): Comments of
	  Polyhedron::concatenate_assign() improved.

2002-08-14 Wednesday 18:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.202): Polyhedron::concatenate_assign()
	  improved.

2002-08-14 Wednesday 18:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.7): Rewritten methods
	  is_topologically_closed() and topological_closure_assign().

2002-08-14 Wednesday 16:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.6): Some improvements to
	  concatenate_assign().

2002-08-14 Wednesday 16:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (alt_nnc.4): Corrected method has_points(), which
	  was returning true even when finding the minus_epsilon ray.

2002-08-14 Wednesday 15:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.41): Documentation of
	  ppl_Polyhedron_concatenate_assign() corrected.

2002-08-14 Wednesday 14:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/hypercubes.cc (alt_nnc.1): Put under CVS control. It is not
	  (yet) built and executed by `make check', because we should find
	  the right performance tradeoff.

2002-08-14 Wednesday 14:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS, interfaces/C/ppl_c.cc, interfaces/C/ppl_c.h,
	  interfaces/Prolog/ppl_prolog.icc,
	  interfaces/Prolog/Ciao/ppl_ciao.pl,
	  interfaces/Prolog/GNU/ppl_gprolog.pl,
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc,
	  interfaces/Prolog/SWI/ppl_swiprolog.cc,
	  interfaces/Prolog/XSB/ppl_xsb.H,
	  interfaces/Prolog/XSB/ppl_xsb.cc,
	  interfaces/Prolog/XSB/xsb_clpq.P,
	  interfaces/Prolog/XSB/xsb_clpq2.P,
	  interfaces/Prolog/YAP/ppl_yap.cc, src/ConSys.cc,
	  src/Determinate.defs.hh, src/Determinate.inlines.hh,
	  src/GenSys.cc, src/Polyhedron.cc, src/Polyhedron.defs.hh,
	  src/PowerSet.defs.hh, src/PowerSet.inlines.hh, tests/Makefile.am,
	  tests/NNCinclusion1.cc, tests/NNCminimize1.cc,
	  tests/NNCminimize2.cc, tests/NNCminimize3.cc,
	  tests/NNCminimize4.cc, tests/NNCminimize5.cc,
	  tests/NNCminimize6.cc, tests/addconstraints1.cc,
	  tests/addconstraints10.cc, tests/addconstraints11.cc,
	  tests/addconstraints2.cc, tests/addconstraints3.cc,
	  tests/addconstraints4.cc, tests/addconstraints5.cc,
	  tests/addconstraints6.cc, tests/addconstraints7.cc,
	  tests/addconstraints8.cc, tests/addconstraints9.cc,
	  tests/adddimensions1.cc, tests/adddimensions2.cc,
	  tests/adddimensions3.cc, tests/adddimensions4.cc,
	  tests/adddimensions5.cc, tests/adddimensions6.cc,
	  tests/adddimensions7.cc, tests/addgenerators1.cc,
	  tests/addgenerators2.cc, tests/addgenerators3.cc,
	  tests/addgenerators4.cc, tests/addgenerators5.cc,
	  tests/addgenerators6.cc, tests/addgenerators7.cc,
	  tests/addgenerators8.cc, tests/affineimage1.cc,
	  tests/affineimage2.cc, tests/affinepreimage1.cc,
	  tests/affinepreimage2.cc, tests/affinepreimage3.cc,
	  tests/affinepreimage4.cc, tests/affinetrans.cc, tests/append1.cc,
	  tests/append2.cc, tests/bounded1.cc, tests/boundingbox1.cc,
	  tests/boundingbox2.cc, tests/concatenate1.cc,
	  tests/concatenate2.cc, tests/concatenate3.cc, tests/empty1.cc,
	  tests/exceptions1.cc, tests/exceptions2.cc, tests/generators1.cc,
	  tests/generators2.cc, tests/h79widening1.cc,
	  tests/h79widening2.cc, tests/h79widening3.cc,
	  tests/inclusion1.cc, tests/inters1.cc, tests/inters2.cc,
	  tests/inters3.cc, tests/inters4.cc, tests/inters5.cc,
	  tests/inters6.cc, tests/inters7.cc, tests/intersection1.cc,
	  tests/intersection2.cc, tests/intersection3.cc,
	  tests/intersection4.cc, tests/intersection5.cc,
	  tests/intersection6.cc, tests/intersection7.cc,
	  tests/limitedh79widening1.cc, tests/limitedh79widening2.cc,
	  tests/mc91.cc, tests/memory1.cc, tests/onepoint.cc,
	  tests/permute.cc, tests/polydifference1.cc,
	  tests/polydifference2.cc, tests/polyhull1.cc, tests/polyhull2.cc,
	  tests/polyhull3.cc, tests/polyhull4.cc, tests/ppl_test.hh,
	  tests/randphull1.cc, tests/relations1.cc, tests/relations2.cc,
	  tests/relations3.cc, tests/relations4.cc, tests/relations5.cc,
	  tests/relations6.cc, tests/relations7.cc, tests/relations8.cc,
	  tests/relations9.cc, tests/removedim1.cc, tests/removedim2.cc,
	  tests/removedim3.cc, tests/removedim4.cc, tests/removedim5.cc,
	  tests/removedim6.cc, tests/removedim7.cc, tests/smm1.cc,
	  tests/timeelapse1.cc, tests/timeelapse2.cc, tests/timeelapse3.cc,
	  tests/timeelapse4.cc, tests/timeelapse5.cc, tests/universe1.cc,
	  tests/universe2.cc, tests/universe3.cc, tests/universe4.cc,
	  tests/universe5.cc, tests/universe6.cc, tests/watchdog1.cc
	  (alt_nnc.[1,1,1,1,1,1,1,1,1,1,1,1,1,4,1,1,3,5,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]):
	  Merge changes from the trunk between tags `alt_nnc_root' and
	  `merge_to_alt_nnc'.

2002-08-14 Wednesday 14:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: NNCinclusion1.cc (1.4), NNCminimize1.cc (1.6),
	  NNCminimize2.cc (1.6), NNCminimize3.cc (1.6), NNCminimize4.cc
	  (1.8), NNCminimize5.cc (1.4), NNCminimize6.cc (1.6),
	  addconstraints1.cc (1.8), addconstraints3.cc (1.5),
	  addconstraints4.cc (1.7), addconstraints5.cc (1.8),
	  addconstraints6.cc (1.9), addconstraints7.cc (1.8),
	  addconstraints8.cc (1.8), addconstraints9.cc (1.9),
	  adddimensions1.cc (1.10), adddimensions2.cc (1.6),
	  adddimensions3.cc (1.8), adddimensions4.cc (1.6),
	  adddimensions5.cc (1.3), adddimensions6.cc (1.3),
	  adddimensions7.cc (1.3), addgenerators1.cc (1.9),
	  addgenerators2.cc (1.9), addgenerators3.cc (1.8),
	  addgenerators4.cc (1.8), addgenerators5.cc (1.8),
	  addgenerators6.cc (1.8), addgenerators7.cc (1.4),
	  addgenerators8.cc (1.4), affineimage1.cc (1.8), affineimage2.cc
	  (1.7), affinepreimage1.cc (1.7), affinepreimage2.cc (1.7),
	  affinepreimage3.cc (1.7), affinepreimage4.cc (1.8),
	  affinetrans.cc (1.11), append1.cc (1.13), append2.cc (1.14),
	  bounded1.cc (1.5), boundingbox1.cc (1.18), boundingbox2.cc (1.9),
	  concatenate1.cc (1.3), concatenate2.cc (1.3), concatenate3.cc
	  (1.3), empty1.cc (1.9), exceptions1.cc (1.13), exceptions2.cc
	  (1.10), generators1.cc (1.8), generators2.cc (1.5),
	  h79widening1.cc (1.3), h79widening2.cc (1.3), h79widening3.cc
	  (1.3), inclusion1.cc (1.4), intersection1.cc (1.3),
	  intersection2.cc (1.3), intersection3.cc (1.3), intersection4.cc
	  (1.3), intersection5.cc (1.3), intersection6.cc (1.3),
	  intersection7.cc (1.3), limitedh79widening1.cc (1.3),
	  limitedh79widening2.cc (1.3), mc91.cc (1.5), memory1.cc (1.7),
	  onepoint.cc (1.7), permute.cc (1.20), polydifference1.cc (1.3),
	  polydifference2.cc (1.5), polyhull1.cc (1.3), polyhull2.cc (1.3),
	  polyhull3.cc (1.3), polyhull4.cc (1.3), randphull1.cc (1.4),
	  relations1.cc (1.5), relations2.cc (1.6), relations3.cc (1.6),
	  relations4.cc (1.6), relations5.cc (1.6), relations6.cc (1.5),
	  relations7.cc (1.5), relations8.cc (1.5), relations9.cc (1.6),
	  removedim1.cc (1.7), removedim2.cc (1.11), removedim3.cc (1.7),
	  removedim4.cc (1.8), removedim5.cc (1.6), removedim6.cc (1.8),
	  removedim7.cc (1.3), smm1.cc (1.7), timeelapse1.cc (1.4),
	  timeelapse2.cc (1.4), timeelapse3.cc (1.4), timeelapse4.cc (1.4),
	  timeelapse5.cc (1.4), universe1.cc (1.5), universe2.cc (1.6),
	  universe3.cc (1.6), universe4.cc (1.6), universe5.cc (1.7),
	  universe6.cc (1.4), watchdog1.cc (1.10): Minor improvements.

2002-08-14 Wednesday 12:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.86): The test nnc_polydifference1 must fail.

2002-08-14 Wednesday 12:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, Generator.cc, Generator.defs.hh
	  (alt_nnc.[2,2,2]): The skip_forward() method now only skips the
	  minus_epsilon_ray.

2002-08-14 Wednesday 12:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (alt_nnc.3): In the skip_forward() method, avoid
	  useless computations for necessarily closed constraint systems.

2002-08-14 Wednesday 12:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.85), NNCinclusion1.cc (1.3),
	  NNCminimize1.cc (1.5), NNCminimize2.cc (1.5), NNCminimize3.cc
	  (1.5), NNCminimize4.cc (1.7), NNCminimize5.cc (1.3),
	  NNCminimize6.cc (1.5), addconstraints1.cc (1.7),
	  addconstraints3.cc (1.4), addconstraints4.cc (1.6),
	  addconstraints5.cc (1.7), addconstraints6.cc (1.8),
	  addconstraints7.cc (1.7), addconstraints8.cc (1.7),
	  addconstraints9.cc (1.8), adddimensions1.cc (1.9),
	  adddimensions2.cc (1.5), adddimensions3.cc (1.7),
	  adddimensions4.cc (1.5), adddimensions5.cc (1.2),
	  adddimensions6.cc (1.2), adddimensions7.cc (1.2),
	  addgenerators1.cc (1.8), addgenerators2.cc (1.8),
	  addgenerators3.cc (1.7), addgenerators4.cc (1.7),
	  addgenerators5.cc (1.7), addgenerators6.cc (1.7),
	  addgenerators7.cc (1.3), addgenerators8.cc (1.3), affineimage1.cc
	  (1.7), affineimage2.cc (1.6), affinepreimage1.cc (1.6),
	  affinepreimage2.cc (1.6), affinepreimage3.cc (1.6),
	  affinepreimage4.cc (1.7), affinetrans.cc (1.10), append1.cc
	  (1.12), append2.cc (1.13), bounded1.cc (1.4), boundingbox1.cc
	  (1.17), boundingbox2.cc (1.8), concatenate1.cc (1.2),
	  concatenate2.cc (1.2), concatenate3.cc (1.2), empty1.cc (1.8),
	  exceptions1.cc (1.12), exceptions2.cc (1.9), generators1.cc
	  (1.7), generators2.cc (1.4), h79widening1.cc (1.2),
	  h79widening2.cc (1.2), h79widening3.cc (1.2), inclusion1.cc
	  (1.3), intersection1.cc (1.2), intersection2.cc (1.2),
	  intersection3.cc (1.2), intersection4.cc (1.2), intersection5.cc
	  (1.2), intersection6.cc (1.2), intersection7.cc (1.2),
	  limitedh79widening1.cc (1.2), limitedh79widening2.cc (1.2),
	  mc91.cc (1.4), memory1.cc (1.6), onepoint.cc (1.6), permute.cc
	  (1.19), polydifference1.cc (1.2), polydifference2.cc (1.4),
	  polyhull1.cc (1.2), polyhull2.cc (1.2), polyhull3.cc (1.2),
	  polyhull4.cc (1.2), ppl_test.hh (1.1), randphull1.cc (1.3),
	  relations1.cc (1.4), relations2.cc (1.5), relations3.cc (1.5),
	  relations4.cc (1.5), relations5.cc (1.5), relations6.cc (1.4),
	  relations7.cc (1.4), relations8.cc (1.4), relations9.cc (1.5),
	  removedim1.cc (1.6), removedim2.cc (1.10), removedim3.cc (1.6),
	  removedim4.cc (1.7), removedim5.cc (1.5), removedim6.cc (1.7),
	  removedim7.cc (1.2), smm1.cc (1.6), timeelapse1.cc (1.3),
	  timeelapse2.cc (1.3), timeelapse3.cc (1.3), timeelapse4.cc (1.3),
	  timeelapse5.cc (1.3), universe1.cc (1.4), universe2.cc (1.5),
	  universe3.cc (1.5), universe4.cc (1.5), universe5.cc (1.6),
	  universe6.cc (1.3), watchdog1.cc (1.9): Most of the test programs
	  are now used to test both closed and not necessarily closed
	  polyhedra.

2002-08-14 Wednesday 11:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.defs.hh, ConSys.inlines.hh,
	  Constraint.cc, Constraint.defs.hh (alt_nnc.[2,2,1,2,2]): Now the
	  iterators on constraint systems do skip the next constraint when
	  the current one is a strict inequality and the next one is a
	  non-strict inequality matching the current one (we still skip
	  trivial-true constraints).

2002-08-14 Wednesday 08:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.29): Updated.

2002-08-14 Wednesday 08:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.201): Polyhedron::concatenate_assign()
	  improved.

2002-08-13 Tuesday 22:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.84), inters1.cc (1.11), inters2.cc (1.14),
	  inters3.cc (1.7), inters4.cc (1.6), inters5.cc (1.8), inters6.cc
	  (1.7), inters7.cc (1.4), intersection1.cc (1.1), intersection2.cc
	  (1.1), intersection3.cc (1.1), intersection4.cc (1.1),
	  intersection5.cc (1.1), intersection6.cc (1.1), intersection7.cc
	  (1.1): Renamed intersN.cc to intersectionN.cc, for N = 1, ..., 7.

2002-08-13 Tuesday 21:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: xsb_clpq.P (1.5), xsb_clpq2.P (1.3):
	  Import as little as possible.

2002-08-13 Tuesday 21:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.4): add_constraints_and_minimize()
	  should now be ok for the new NNC repr.  Added a couple of FIXME's
	  to mark methods that still need to be adjusted.

2002-08-13 Tuesday 21:03  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, GenSys.defs.hh (alt_nnc.[1,1]): Removed method
	  add_corresponding_closure_points().

2002-08-13 Tuesday 18:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.42), interfaces/C/ppl_c.h (1.40),
	  interfaces/Prolog/ppl_prolog.icc (1.62),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.21),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.17),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.25),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.49),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.2),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.7),
	  interfaces/Prolog/XSB/xsb_clpq.P (1.4),
	  interfaces/Prolog/XSB/xsb_clpq2.P (1.2),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.42), src/Determinate.defs.hh
	  (1.9), src/Determinate.inlines.hh (1.10), src/Polyhedron.cc
	  (1.200), src/Polyhedron.defs.hh (1.138), src/PowerSet.defs.hh
	  (1.12), src/PowerSet.inlines.hh (1.13), tests/Makefile.am (1.83),
	  tests/addconstraints10.cc (1.6), tests/addconstraints11.cc (1.7),
	  tests/addconstraints2.cc (1.13), tests/concatenate1.cc (1.1),
	  tests/concatenate2.cc (1.1), tests/concatenate3.cc (1.1),
	  tests/exceptions2.cc (1.8): The method
	  Polyhedron::add_dimensions_and_constraints(ConSys&) has gone.  A
	  similar functionality is provided by the new method
	  Polyhedron::concatenate_assign(const Polyhedron&).

2002-08-13 Tuesday 18:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (alt_nnc.2): Fixed method	template
	  <typename Box>   Polyhedron::Polyhedron(Topology topol, const
	  Box& box) to work correctly with the new NNC representation.

2002-08-13 Tuesday 18:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/boundingbox2.cc (alt_nnc.1): Some strange formatting fixed.

2002-08-13 Tuesday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.8), Determinate.inlines.hh (1.9):
	  Default constructor replaced with a generalized constructor.	New
	  method Determinate::concatenate_assign(const Determinate& y).

2002-08-13 Tuesday 16:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.3): Most methods now correctly use the
	  new NNC representation (notable exceptions: the wideinings and
	  the boundingbox operators).

2002-08-13 Tuesday 16:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/minimize.cc (alt_nnc.1): When con_to_gen is false, no longer
	  checking for the presence of the positivity constraint (C) or the
	  presence of eps_geq_zero (NNC).

2002-08-13 Tuesday 16:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc, Generator.defs.hh, Generator.inlines.hh
	  (alt_nnc.[1,1,1]): Added method for getting the
	  minus_epsilon_ray, needed for the new NNC representation;
	  adjusted the OK() method so that it will no longer complain when
	  finding a ray with a non-zero epsilon coefficient.

2002-08-13 Tuesday 16:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.defs.hh (alt_nnc.[1,1]): Added method
	  add_corresponding_nonstrict_inequalities().

2002-08-13 Tuesday 14:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.11), PowerSet.inlines.hh (1.12): Added
	  a `space_dim' private member and its usual public accessor:
	  space_dimension().

2002-08-13 Tuesday 14:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.7), Determinate.inlines.hh (1.8):
	  Method space_dimension() added.  Added template <typename PH>
	  bool operator==(const Determinate<PH>& x, const Determinate<PH>&
	  y) and template <typename PH> bool operator!=(const
	  Determinate<PH>& x, const Determinate<PH>& y).  Added several
	  assertions.  Default constructor made public (it was left private
	  by mistake).	Prepare for some cleanup.

2002-08-13 Tuesday 11:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (alt_nnc.2): Started converting
	  H-representations into P-representations.  The build is
	  (obviously) broken.

2002-08-13 Tuesday 10:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc, Constraint.defs.hh, Constraint.inlines.hh,
	  Polyhedron.cc, Polyhedron.defs.hh, Polyhedron.inlines.hh
	  (alt_nnc.[1,1,1,1,1,1]): Getting rid of the epsilon_geq_zero()
	  constraint.  Added the static function
	  Polyhedron::add_low_level_constraints(ConSys&) to centralize the
	  issues related to the positivity and the epsilon_leq_one()
	  low-level constraints.

2002-08-13 Tuesday 10:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.41), GenSys.cc (1.61): In methods
	  ConSys::insert() and GenSys::insert(), when the systems are empty
	  and NNC, computing the new size of the constraint/generators in a
	  cleaner way.

2002-08-12 Monday 20:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.60): Patched the method insert(const
	  Generator&), which was doing nasty things when trying to insert a
	  generator into an empty generator system that was declared to be
	  NNC.

2002-08-12 Monday 20:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/addgenerators8.cc (1.2): No longer NOISY.

2002-08-12 Monday 20:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.199): Corrected a bug in add_generator(const
	  Generator&) whereby we were not adding the corresponding closure
	  point when adding a point to an empty NNC polyhedron.

2002-08-12 Monday 20:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.137): Removed a /*! that was inside the
	  scope of another /*!.

2002-08-12 Monday 20:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.82), addgenerators8.cc (1.1): The new test
	  addgenerators8 shows a bug when trying to insert a point into an
	  empty NNC polyhedron using add_generator(const Generator&).

2002-08-12 Monday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.6), Determinate.inlines.hh (1.7),
	  PowerSet.defs.hh (1.10), PowerSet.inlines.hh (1.11): Classes
	  Determinate and PowerSet equipped with initial implementations of
	  methods add_constraint(), add_constraints(), and
	  add_dimensions_and_constraints().

2002-08-12 Monday 09:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.136): The documentation of
	  Polyhedron::add_dimensions_and_constraints() has been made
	  consistent with that of the other methods.

2002-08-12 Monday 08:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.22), interfaces/Prolog/expected2
	  (1.6), interfaces/Prolog/XSB/expected2 (1.2), src/ConSys.cc
	  (1.40), src/Constraint.cc (1.29), src/Constraint.inlines.hh
	  (1.39), src/GenSys.cc (1.59), src/Generator.cc (1.36),
	  src/Generator.inlines.hh (1.36), src/Matrix.cc (1.40),
	  src/Matrix.defs.hh (1.31), src/Polyhedron.cc (1.198),
	  src/Polyhedron.inlines.hh (1.42), src/minimize.cc (1.22): Avoid
	  using LaTeX commands in ordinary C++ comments.

2002-08-12 Monday 08:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.197): Properly comment a couple of
	  preprocessor directives.

2002-08-11 Sunday 17:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.61), src/C_Polyhedron.defs.hh
	  (1.13), src/C_Polyhedron.inlines.hh (1.8),
	  src/NNC_Polyhedron.defs.hh (1.16), src/NNC_Polyhedron.inlines.hh
	  (1.10), src/Polyhedron.defs.hh (1.135), src/Polyhedron.inlines.hh
	  (1.41), src/PowerSet.defs.hh (1.9), src/PowerSet.inlines.hh
	  (1.10): The syntax `template <class T>' is an anachronism: use
	  `template <typename T>' instead.

2002-08-11 Sunday 16:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.types.hh (1.3), C_Polyhedron.types.hh (1.4),
	  ConSys.types.hh (1.4), Constraint.types.hh (1.4), GenSys.types.hh
	  (1.4), Generator.types.hh (1.4), Init.types.hh (1.3),
	  Integer.types.hh (1.5), Interval.types.hh (1.3),
	  LinExpression.types.hh (1.4), Matrix.types.hh (1.4),
	  NNC_Polyhedron.types.hh (1.4), Poly_Con_Relation.types.hh (1.3),
	  Poly_Gen_Relation.types.hh (1.3), Polyhedron.types.hh (1.5),
	  Row.types.hh (1.4), SatMatrix.types.hh (1.4), SatRow.types.hh
	  (1.4), Status.types.hh (1.4), Variable.types.hh (1.4): Obey our
	  standard about namespace-level indentation.

2002-08-11 Sunday 16:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.6), AskTell.inlines.hh (1.7),
	  AskTell.types.hh (1.2), BoundingBox.defs.hh (1.3),
	  BoundingBox.inlines.hh (1.4), BoundingBox.types.hh (1.2),
	  C_Polyhedron.defs.hh (1.12), C_Polyhedron.inlines.hh (1.7),
	  C_Polyhedron.types.hh (1.3), ConSys.defs.hh (1.62),
	  ConSys.inlines.hh (1.23), ConSys.types.hh (1.3),
	  Constraint.defs.hh (1.67), Constraint.inlines.hh (1.38),
	  Constraint.types.hh (1.3), Determinate.defs.hh (1.5),
	  Determinate.inlines.hh (1.6), Determinate.types.hh (1.2),
	  GenSys.defs.hh (1.76), GenSys.inlines.hh (1.25), GenSys.types.hh
	  (1.3), Generator.defs.hh (1.72), Generator.inlines.hh (1.35),
	  Generator.types.hh (1.3), Init.defs.hh (1.4), Init.inlines.hh
	  (1.3), Init.types.hh (1.2), Integer.defs.hh (1.6),
	  Integer.inlines.hh (1.5), Integer.types.hh (1.4),
	  Interval.defs.hh (1.6), Interval.types.hh (1.2), LCompare.defs.hh
	  (1.2), LCompare.inlines.hh (1.2), LCompare.types.hh (1.2),
	  LinExpression.defs.hh (1.49), LinExpression.inlines.hh (1.21),
	  LinExpression.types.hh (1.3), Matrix.defs.hh (1.30),
	  Matrix.inlines.hh (1.25), Matrix.types.hh (1.3),
	  NNC_Polyhedron.defs.hh (1.15), NNC_Polyhedron.inlines.hh (1.9),
	  NNC_Polyhedron.types.hh (1.3), Poly_Con_Relation.defs.hh (1.11),
	  Poly_Con_Relation.inlines.hh (1.7), Poly_Con_Relation.types.hh
	  (1.2), Poly_Gen_Relation.defs.hh (1.10),
	  Poly_Gen_Relation.inlines.hh (1.7), Poly_Gen_Relation.types.hh
	  (1.2), Polyhedron.defs.hh (1.134), Polyhedron.inlines.hh (1.40),
	  Polyhedron.types.hh (1.4), PowerSet.defs.hh (1.8),
	  PowerSet.inlines.hh (1.9), PowerSet.types.hh (1.2), Row.defs.hh
	  (1.52), Row.inlines.hh (1.28), Row.types.hh (1.3),
	  SatMatrix.defs.hh (1.21), SatMatrix.inlines.hh (1.14),
	  SatMatrix.types.hh (1.3), SatRow.defs.hh (1.17),
	  SatRow.inlines.hh (1.17), SatRow.types.hh (1.3), Status.defs.hh
	  (1.19), Status.inlines.hh (1.9), Status.types.hh (1.3),
	  Variable.defs.hh (1.21), Variable.inlines.hh (1.10),
	  Variable.types.hh (1.3): Multiple inclusion guards properly
	  commented.

2002-08-11 Sunday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/: C/ppl_c.h (1.39), Prolog/XSB/ppl_xsb.cc (1.6),
	  Prolog/YAP/ppl_yap.cc (1.41): Comment the closing brace of
	  `extern "C"' blocks.

2002-08-11 Sunday 15:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.61), Constraint.defs.hh (1.66),
	  GenSys.defs.hh (1.75), Generator.defs.hh (1.71), Integer.defs.hh
	  (1.5), Interval.defs.hh (1.5), LinExpression.defs.hh (1.48),
	  Matrix.defs.hh (1.29), Poly_Con_Relation.defs.hh (1.10),
	  Poly_Gen_Relation.defs.hh (1.9), Polyhedron.defs.hh (1.133),
	  Row.defs.hh (1.51), SatMatrix.defs.hh (1.20), SatRow.defs.hh
	  (1.16), Status.defs.hh (1.18), Variable.defs.hh (1.20):
	  Namespace-level indentation fixed.

2002-08-11 Sunday 15:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* STANDARDS (1.5): Add rules concerning block closures and
	  namespace indentation.

2002-08-11 Sunday 11:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.4), Determinate.inlines.hh (1.5),
	  PowerSet.defs.hh (1.7), PowerSet.inlines.hh (1.8): Added methods
	  add_dimensions_and_project(), add_dimensions_and_embed(),
	  remove_dimensions(), and remove_higher_dimensions().

2002-08-10 Saturday 19:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.57), interfaces/C/Makefile.am (1.11),
	  src/Makefile.am (1.48): Bump version numbers.

2002-08-10 Saturday 19:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/.cvsignore (1.2): For those building in the sources
	  directory.

2002-08-10 Saturday 14:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.9): Allow building in any
	  directory (included the one containing the sources).

2002-08-09 Friday 21:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.8): Distribute also expected
	  and expected2.

2002-08-09 Friday 21:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: Makefile.am (1.19), devref-browse.doxyconf-latex.in (1.21),
	  devref-print.doxyconf-latex.in (1.21), devref.doxyconf-html.in
	  (1.22), user-browse.doxyconf-latex.in (1.13),
	  user-print.doxyconf-latex.in (1.13), user.doxyconf-html.in
	  (1.15): Transition to Doxygen 1.2.17 completed.

2002-08-08 Thursday 08:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/.cvsignore (1.6): Ignore also the newly added tests.

2002-08-07 Wednesday 23:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: .cvsignore (1.2), Makefile.am (1.7):
	  Support building in the sources' directory.

2002-08-07 Wednesday 22:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: Makefile.am (1.6), expected2 (1.1): XSB
	  interface now fully operational.

2002-08-07 Wednesday 19:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: Makefile.am (1.5), expected (1.1),
	  ppl_xsb.cc (1.5), xsb_clpq.P (1.3), xsb_clpq2.P (1.1): Bug fixed.
	  Tests with clpq.pl now working.

2002-08-07 Wednesday 18:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.4): Improve the `make check'
	  mechanism.

2002-08-07 Wednesday 17:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/Makefile.am (1.3): MOSTLYCLEANFILES
	  integrated.

2002-08-07 Wednesday 11:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/xsb_clpq.P (1.2): Unneeded parentheses
	  removed.

2002-08-07 Wednesday 11:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/: Makefile.am (1.2), xsb_clpq.P (1.1):
	  Towards a working XSB interface.

2002-08-06 Tuesday 19:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.38): Better comment for the closing
	  #endif of the multiple inclusion guard.

2002-08-06 Tuesday 19:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.4): Wrong initializations
	  fixed.

2002-08-06 Tuesday 18:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.3): Try to get around bugs in
	  XSB 2.5 foreign language interface (several foreign language
	  interface functions do not properly dereference their arguments).

2002-08-05 Monday 17:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.5), AskTell.inlines.hh (1.6),
	  PowerSet.inlines.hh (1.7): Some cleaning.

2002-08-04 Sunday 18:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.4), AskTell.inlines.hh (1.5),
	  Determinate.defs.hh (1.3), Determinate.inlines.hh (1.4),
	  PowerSet.defs.hh (1.6), PowerSet.inlines.hh (1.6): All the
	  entails() functions became definitely_entails() methods.  More
	  cleaning.

2002-08-04 Sunday 14:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.3), AskTell.inlines.hh (1.4),
	  PowerSet.defs.hh (1.5), PowerSet.inlines.hh (1.5): More cleaning.

2002-08-04 Sunday 13:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/AskTell.inlines.hh (1.3), src/Determinate.defs.hh (1.2),
	  src/Determinate.inlines.hh (1.3), src/PowerSet.defs.hh (1.4),
	  src/PowerSet.inlines.hh (1.4), tests/mc91.cc (1.3):
	  CS::operator*=() renamed CS::meet_assign().  CS::operator+=()
	  renamed CS::upper_bound_assign().

2002-08-04 Sunday 13:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.47), PowerSet.defs.hh (1.3),
	  PowerSet.inlines.hh (1.3): Use the new classes also for the
	  documentation.  The PowerSet construction is now implemented
	  using a sequence.  PowerSet::omega_reduction() reimplemented.

2002-08-03 Saturday 21:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.2), PowerSet.inlines.hh (1.2): Complete
	  redesign started.

2002-08-02 Friday 11:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/AskTell.defs.hh (1.2), src/AskTell.inlines.hh (1.2),
	  tests/mc91.cc (1.2): Move all code to AskTell.inlines.hh.  Minor
	  improvements.

2002-08-02 Friday 10:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.11), exceptions2.cc (1.7), print.hh
	  (1.10), randphull1.cc (1.2): Include <iostream>.

2002-08-02 Friday 09:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.56): Check whether the Mercury compiler is
	  installed.

2002-08-01 Thursday 18:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.81), mc91.cc (1.1): Test the constraint
	  systems' constructions with McCarthy's 91 function.

2002-08-01 Thursday 17:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.46): Activate the new constraint systems'
	  files.

2002-08-01 Thursday 17:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Determinate.inlines.hh (1.2): Inclusion guard comment fixed.

2002-08-01 Thursday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PowerSet.defs.hh (1.1), PowerSet.inlines.hh (1.1),
	  PowerSet.types.hh (1.1): Initial implementation for the class
	  `PowerSet': the powerset construction on constraint systems.

2002-08-01 Thursday 17:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: AskTell.defs.hh (1.1), AskTell.inlines.hh (1.1),
	  AskTell.types.hh (1.1): Initial implementation for the class
	  `AskTell': the ask and tell construction on constraint systems.

2002-08-01 Thursday 16:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: LCompare.defs.hh (1.1), LCompare.inlines.hh (1.1),
	  LCompare.types.hh (1.1): Initial implementation for the class
	  `LCompare': a function object for lexical comparison.

2002-08-01 Thursday 16:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Determinate.defs.hh (1.1), Determinate.inlines.hh (1.1),
	  Determinate.types.hh (1.1): Initial implementation for the class
	  `Determinate': it wraps a polyhedron class into a determinate
	  constraint system interface.

2002-07-30 Tuesday 11:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_4-branch.3): Update version.

2002-07-30 Tuesday 11:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog, ChangeLog (ppl-0_4-branch.[2,4]): Mark
	  ChangeLog.

2002-07-30 Tuesday 09:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_4-branch.3): Updated.

2002-07-29 Monday 20:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* COPYING (1.2), INSTALL (1.4), config.guess (1.12), config.sub
	  (1.11), depcomp (1.3), install-sh (1.3), missing (1.5),
	  mkinstalldirs (1.4): Updated to the respective latest versions.

2002-07-29 Monday 10:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.196): Added an assertions to
	  add_constraints(ConSys& cs).	Also added a test for emptyness, to
	  avoid adding constraints to a polyhedron already known to be
	  empty.

2002-07-29 Monday 07:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (1.21): Comment removed.

2002-07-29 Monday 07:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (ppl-0_4-branch.1): Comment
	  removed.

2002-07-29 Monday 07:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_4-branch.3): Mention the fixes to
	  Polyhedron::check_universe() and
	  NNC_Polyhedron::NNC_Polyhedron(ConSys& cs).

2002-07-29 Monday 01:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc, src/GenSys.cc, tests/universe6.cc,
	  src/Polyhedron.cc (ppl-0_4-branch.[1,1,1,2]): The following
	  corrections made on HEAD are now reported in the ppl-0_4-branch:
	  - fixed a bug in ConSys/GenSys.adjust_topology_and_dimension()  -
	  fixed a bug in Polyhedron::check_universe().

2002-07-29 Monday 00:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.195): Fixed a bug in check_universe(), which
	  was returning the wrong result when called by a zero-dim universe
	  polyhedron.

2002-07-29 Monday 00:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.39), GenSys.cc (1.58): Methods
	  adjust_topology_and_dimension() now behave properly even on
	  constraint/generator systems having no rows.

2002-07-29 Monday 00:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/universe6.cc (1.2): Added a new test, showing two bugs:  -
	  the first bug has to do with an invariant that was not fullfilled
	  when creating an NNC polyehdron starting from an empty
	  constraint system;	this bug was only visible when compiling
	  with assertions turned on.   - the second bug was due to the fact
	  that check_universe() returns     the wrong result when applied
	  to a zero-dim-universe polyhedron.

2002-07-28 Sunday 20:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/.cvsignore (1.1): Put under CVS control.

2002-07-28 Sunday 20:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/pl_check.pl (1.20): Properly initialize and
	  finalize the library.

2002-07-28 Sunday 19:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.13),
	  GNU/ppl_gprolog_sd.cc (1.8), SICStus/ppl_sicstus_sd.cc (1.24),
	  SWI/ppl_swiprolog.cc (1.48), YAP/ppl_yap.cc (1.40): Fixed some
	  comments and assertions.

2002-07-28 Sunday 19:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/XSB/ppl_xsb.cc (1.2): Several bugs fixed.

2002-07-28 Sunday 12:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_4-branch.2): Updated.

2002-07-28 Sunday 11:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (ppl-0_4-branch.1): Updated for version 0.4.1.

2002-07-28 Sunday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_4-branch.2): Add news for version 0.4.1.

2002-07-28 Sunday 11:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_4-branch.2): Bump version number.

2002-07-28 Sunday 11:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Integer.types.hh, Makefile.am (ppl-0_4-branch.[1,1]):
	  Document the fact that Parma_Polyhedra_Library::Integer is a
	  synonym for GMP's mpz_class.

2002-07-24 Wednesday 14:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/Makefile.am (1.8): Ciao Prolog library
	  renamed.

2002-07-24 Wednesday 14:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Integer.types.hh (1.3), Makefile.am (1.45): Document the
	  fact that Parma_Polyhedra_Library::Integer is a synonym for GMP's
	  mpz_class.

2002-07-23 Tuesday 18:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.70): Corrected doxygen comments to
	  shorthands functions line, ray, point.

2002-07-23 Tuesday 18:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.88): Small correction in the example of
	  the use of an extended generator system.

2002-07-22 Monday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.12),
	  GNU/ppl_gprolog_sd.cc (1.7), SICStus/ppl_sicstus_sd.cc (1.23),
	  SWI/ppl_swiprolog.cc (1.47), YAP/ppl_yap.cc (1.39): Comments
	  fixed.  Avoid macros with unused parameters.

2002-07-22 Monday 15:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.55), interfaces/Prolog/Makefile.am (1.19),
	  interfaces/Prolog/XSB/Makefile.am (1.1),
	  interfaces/Prolog/XSB/ppl_xsb.H (1.1),
	  interfaces/Prolog/XSB/ppl_xsb.cc (1.1): New Prolog interface.

2002-07-22 Monday 14:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc, tests/Makefile.am, tests/polydifference2.cc
	  (ppl-0_4-branch.[1,1,1]): The corrections of the bug identified
	  in revisions 1.193 and 1.194 of the HEAD branch are now reported
	  in the ppl-0_4-branch.  The same for the test that outlighted the
	  bug.

2002-07-10 Wednesday 12:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/polydifference2.cc (1.3): Don't be noisy.

2002-07-10 Wednesday 12:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.194): Corrected a bug in
	  poly_difference_assign(const Polyhedron& y).	No longer ignoring
	  the equality constraints of `y' (the bug was affecting both C and
	  NNC computations).

2002-07-10 Wednesday 12:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/polydifference2.cc (1.2): Output improved.

2002-07-10 Wednesday 11:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.193): Corrected a bug in
	  Polyhedron::operator=(...).  When assigning to *this a polyhedron
	  declared to be empty, we now call set_empty() to also clear the
	  constraint and generator systems, therefore enforcing the
	  corresponding invariant.

2002-07-10 Wednesday 11:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.80), polydifference2.cc (1.1): Added a new
	  test showing two bugs:  - the assignment operator on Polyhedron
	  breaks the invariant saying that    an empty polyhedron has a
	  constraint system with either no rows or    a single
	  unsatisfiable constraint;  - the current implementation of
	  poly_difference_assign() is wrong in	  that it disregards
	  equality constraints.

2002-07-03 Wednesday 15:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: fake_main.pl (1.1), ppl_ciao.pl (1.20):
	  Wrong declarations fixed (thanks to Jose Morales).  The file
	  fake_main.pl is a kludge to convince ciaoc to produce object code
	  (the `-c' option is broken in Ciao Prolog 1.8 #2).  Missing
	  predicate declarations have been added.

2002-07-02 Tuesday 22:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.19): Some bugs have been
	  fixed.

2002-07-02 Tuesday 22:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.54): Version bumped: we are now in the 0.5 era.

2002-07-02 Tuesday 22:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.53), interfaces/Prolog/Makefile.am (1.18): The
	  Ciao Prolog interface has been re-enabled.

2002-07-02 Tuesday 21:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.52), Watchdog/configure.ac (1.9): Shared
	  libraries are again turned off by default.

2002-07-02 Tuesday 21:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_4-branch.1), NEWS (1.28): Cut and paste error fixed.

2002-07-01 Monday 18:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_4-branch.1): Update version.

2002-07-01 Monday 18:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog, ChangeLog (ppl-0_4-branch.[1,1]): Mark
	  ChangeLog.

2002-07-01 Monday 18:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.9): Updated.

2002-07-01 Monday 16:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.11), config.sub (1.10), ltmain.sh (1.5): Updated.

2002-07-01 Monday 08:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.27): Updated.

2002-06-30 Sunday 22:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* STANDARDS (1.4): Use the same form of headings.

2002-06-30 Sunday 22:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.12): Mention the support for NNC polyhedra.  Updated
	  for PPL 0.4.	Organization of source distributions updated.

2002-06-30 Sunday 22:08  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/GNU/ppl_gprolog.pl (1.16): Bug fixed in
	  limited_H79_widening_assign.

2002-06-30 Sunday 21:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.15): Mention not necessarily closed convex
	  polyhedra in the main %description.

2002-06-30 Sunday 20:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: check_script (1.3), expected (1.2): Test
	  ack.clpq with the easier query `?- ack(2, 1, Z).'.

2002-06-30 Sunday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.defs.hh (1.5), Watchdog.inlines.hh (1.4):
	  Implementation of inline functions moved to Watchdog.inlines.hh.

2002-06-30 Sunday 17:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/ChangeLog (1.2): This file will no longer be empty.

2002-06-30 Sunday 15:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.51), Watchdog/configure.ac (1.8): Invocations to
	  AC_PROG_* macros repositioned.

2002-06-30 Sunday 15:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.defs.hh (1.69): Friend declaration split
	  differently.

2002-06-30 Sunday 15:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.defs.hh (1.4), Watchdog.inlines.hh (1.3): Use
	  methods instead of friends for binary operators over Time.

2002-06-30 Sunday 12:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/.cvsignore (1.4), SICStus/.cvsignore
	  (1.4), SWI/.cvsignore (1.4), YAP/.cvsignore (1.4): Added files to
	  be ignored.

2002-06-30 Sunday 12:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/.cvsignore (1.3), GNU/.cvsignore (1.3),
	  SICStus/.cvsignore (1.3), YAP/.cvsignore (1.3): For those
	  building in the sources' directory.

2002-06-30 Sunday 10:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.50): Make building shared libraries the default.

2002-06-29 Saturday 21:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.60), ppl_prolog.icc
	  (1.60), Ciao/ppl_ciao.pl (1.18), GNU/ppl_gprolog.pl (1.15),
	  SICStus/ppl_sicstus_sd.cc (1.22), SWI/ppl_swiprolog.cc (1.46),
	  YAP/ppl_yap.cc (1.38): Added documentation for Prolog interface
	  predicates bounds from above/below and moved definitions to
	  follow that of is_bounded.

2002-06-29 Saturday 14:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.19), ppl_prolog.icc (1.59),
	  Ciao/ppl_ciao.pl (1.17), GNU/ppl_gprolog.pl (1.14),
	  SICStus/ppl_sicstus_sd.cc (1.21), SWI/ppl_swiprolog.cc (1.45),
	  YAP/ppl_yap.cc (1.37): Predicates for bounds_from_above/below
	  added to Prolog interface.

2002-06-29 Saturday 08:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.41), ppl_c.h (1.37): Added
	  ppl_Polyhedron_bounds_from_above() and
	  ppl_Polyhedron_bounds_from_below().

2002-06-29 Saturday 08:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.192), Polyhedron.defs.hh (1.132),
	  Polyhedron.inlines.hh (1.39): Added bool bounds_from_above(const
	  LinExpression&) const and bool bounds_from_below(const
	  LinExpression&) const: both are implemented in terms of the new
	  bool bounds(const LinExpression& expr, bool from_above) const.

2002-06-28 Friday 22:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.191): Polyhedron::is_bounded() improved.

2002-06-28 Friday 22:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: clpq2.pl (1.21), expected2 (1.5): Undo the
	  changes corresponding to the last two commits of clpq2.pl and to
	  the last commit of expected2.

2002-06-28 Friday 17:06  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq2.pl (1.20), expected2 (1.4): Updated the
	  expected2 file to match current clpq2.pl clpq2.pl has a minor bug
	  fixed when writing equality bindings that were not included as
	  constraints (this does not affect the results of the
	  check_script2).

2002-06-28 Friday 09:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: memory1.cc (1.5), timings.cc (1.2): Improved error
	  handling.

2002-06-28 Friday 09:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/memory1.cc (1.4): Cleaned and improved error handling.

2002-06-27 Thursday 09:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.defs.hh (1.60), src/ConSys.inlines.hh (1.22),
	  src/GenSys.defs.hh (1.74), src/GenSys.inlines.hh (1.24),
	  tests/NNCminimize1.cc (1.4), tests/NNCminimize2.cc (1.4),
	  tests/NNCminimize3.cc (1.4), tests/NNCminimize4.cc (1.6): Added
	  public method clear() to ConSys and GenSys.  Added a FIXME
	  comment to NNCminimize* tests.

2002-06-27 Thursday 09:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.59), ConSys.inlines.hh (1.21),
	  Constraint.defs.hh (1.65), Constraint.inlines.hh (1.37),
	  GenSys.defs.hh (1.73), GenSys.inlines.hh (1.23),
	  Generator.defs.hh (1.68), Generator.inlines.hh (1.34),
	  LinExpression.defs.hh (1.47), LinExpression.inlines.hh (1.20):
	  Added several versions of swap() to cope with the private
	  inheritance problems caused by the departure of PPL_HIDDEN.

2002-06-27 Thursday 08:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.inlines.hh (1.33): Avoid redefinition of default
	  arguments.

2002-06-26 Wednesday 19:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.57), GenSys.defs.hh (1.72): Added
	  std::ostream& operator<<(std::ostream&, const GenSys&) and
	  std::istream& operator>>(std::istream&, GenSys&).

2002-06-26 Wednesday 19:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.38), ConSys.defs.hh (1.58), Matrix.cc (1.39):
	  Added std::ostream& operator<<(std::ostream&, const ConSys&) and
	  std::istream& operator>>(std::istream&, ConSys&).

2002-06-26 Wednesday 18:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in (1.20),
	  doc/devref-print.doxyconf-latex.in (1.20),
	  doc/devref.doxyconf-html.in (1.21), interfaces/C/Makefile.am
	  (1.10), interfaces/C/ppl_c.cc (1.40),
	  interfaces/Prolog/Ciao/Makefile.am (1.7),
	  interfaces/Prolog/GNU/Makefile.am (1.23),
	  interfaces/Prolog/SICStus/Makefile.am (1.28),
	  interfaces/Prolog/SWI/Makefile.am (1.25),
	  interfaces/Prolog/YAP/Makefile.am (1.15), src/ConSys.defs.hh
	  (1.57), src/Constraint.defs.hh (1.64), src/GenSys.defs.hh (1.71),
	  src/Generator.defs.hh (1.67), src/LinExpression.defs.hh (1.46),
	  src/Makefile.am (1.44), src/Poly_Con_Relation.defs.hh (1.9),
	  src/Poly_Gen_Relation.defs.hh (1.8), src/ppl_filter_doxygen.sed
	  (1.3), src/ppl_filter_install.sed (1.3): PPL_HIDDEN has gone.

2002-06-26 Wednesday 18:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: ConSys.defs.hh (1.56), Constraint.defs.hh (1.63),
	  GenSys.defs.hh (1.70): Minor improvements to comments (just
	  English).

2002-06-26 Wednesday 18:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.defs.hh (1.66), Generator.inlines.hh (1.32),
	  Makefile.am (1.43): Added new shorthand non-member functions for
	  creting generators: Generator line(const LinExpression&),
	  Generator ray(const LinExpression&), Generator point(const
	  LinExpression&, const Integer&), Generator closure_point(const
	  LinExpression&, const Integer&).

2002-06-26 Wednesday 18:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/: C/ppl_c.cc (1.39), Prolog/ppl_prolog.icc (1.58): Use
	  the new static members of Generator to construct generatos.

2002-06-26 Wednesday 15:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.defs.hh (1.45): Removed spurious duplicated
	  declaration (was already commented out).

2002-06-26 Wednesday 15:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.40), Row.defs.hh (1.50), globals.cc (1.8),
	  globals.hh (1.19): const Integer& operator*(const Constraint&,
	  const Generator&) and const Integer& reduced_scalar_product(const
	  Constraint&, const Generator&) moved from Row.* to globals.*.

2002-06-26 Wednesday 14:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.62), Generator.cc (1.35),
	  Generator.defs.hh (1.65), LinExpression.defs.hh (1.44),
	  Makefile.am (1.42), Polyhedron.cc (1.190), Row.cc (1.39),
	  Row.defs.hh (1.49): Started getting rid of preprocessing flag
	  PPL_HIDDEN (work still in progress - build broken).

2002-06-26 Wednesday 14:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.55), GenSys.defs.hh (1.69): Input and
	  output operator for Polyhedron made friends of ConSys and GenSys.

2002-06-26 Wednesday 14:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (1.37): Comment alignment fixed.

2002-06-26 Wednesday 08:59  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.87): Improved and corrected affine image
	  paragraph.

2002-06-25 Tuesday 16:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.86): More improvements to paragraph on
	  affine image operations.

2002-06-25 Tuesday 16:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.85): For uniformity, using \cQ instead of
	  \cP' in the section about widening.

2002-06-25 Tuesday 16:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.84): Improved the section about
	  addition/removal of space dimensions.

2002-06-25 Tuesday 16:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.131): The documentation for the swap
	  function on Polyhedron objects now appears in the user manuals
	  too.

2002-06-25 Tuesday 15:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.types.hh (1.3): Added comments to `namespace std'.

2002-06-25 Tuesday 15:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.83): Added more on an affine preimage.

2002-06-25 Tuesday 15:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/.cvsignore (1.3), src/.cvsignore (1.6), tests/.cvsignore
	  (1.5): For those building in the sources' directory.

2002-06-25 Tuesday 15:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.82): Added formal definition of the
	  time-elapse operator.

2002-06-25 Tuesday 14:16  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.81): Changed rows and columns round in the
	  affine paragraph.

2002-06-25 Tuesday 14:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.80), src/Polyhedron.defs.hh (1.130):
	  Adding some references to the introduction to the documentation
	  of operators.

2002-06-25 Tuesday 14:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.19),
	  devref-print.doxyconf-latex.in (1.19), devref.doxyconf-html.in
	  (1.20): No longer including the second part of the introduction
	  in the devref's manuals, since it is not up-to-date.

2002-06-25 Tuesday 13:50  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.79): Examples added to explanation of
	  affine image operator.

2002-06-25 Tuesday 13:26  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.78): Started explaining the affine
	  operators.

2002-06-25 Tuesday 12:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.77), src/Polyhedron.defs.hh (1.129): In
	  the widening and poly-difference comments, using the \anchor
	  doxygen command to link to a specific paragraph of the
	  introduction.

2002-06-25 Tuesday 11:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.128): A few docuemntation errors
	  corrected.  Added a note about methods ending in _and_minimize(),
	  to explain the menaing of their return value. From all of their
	  brief doxygen comments, moved the corresponding sentence on their
	  return value, which is now placed in the detailed doxygen
	  comment, using the \return command.

2002-06-25 Tuesday 11:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.76): Renamed variables in example in
	  paragraph wrt adding dimensions.

2002-06-25 Tuesday 11:08  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.19): Improved version of clpq2.pl:
	  - Code formatting corrected;    - Unused predicate
	  definitions removed;	       - Predicates renamed to match
	  functionality;    - Much more efficient as it projects unwanted
	  dimensions away;  - Allows input variables to bind to Herbrand
	  terms;     - Allows integer expressions as input (eg fib(2,
	  X+1)).

2002-06-25 Tuesday 10:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.75): Added paragraphs on adding and
	  removing dimensions.

2002-06-25 Tuesday 08:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.18): More tidying of the tests.

2002-06-25 Tuesday 08:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.49): Version number bumped.

2002-06-25 Tuesday 08:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: ConSys.cc (1.36), Generator.defs.hh (1.64), Polyhedron.cc
	  (1.189), Polyhedron.defs.hh (1.127), conversion.cc (1.29): In all
	  files, changed reference to Introduction to the relevant section.
	  In Polyhedron.defs.hh:   - A few minor changes to English
	  expressions.	 - An x_1 changed to y.

2002-06-25 Tuesday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.26), doc/definitions.dox (1.74), interfaces/C/ppl_c.cc
	  (1.38), interfaces/C/ppl_c.h (1.36),
	  interfaces/Prolog/Prolog_interface.dox (1.59),
	  interfaces/Prolog/pl_check.pl (1.17),
	  interfaces/Prolog/ppl_prolog.icc (1.57),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.16),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.13),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.20),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.44),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.36), src/Polyhedron.cc
	  (1.188), src/Polyhedron.defs.hh (1.126), tests/.cvsignore (1.4),
	  tests/Makefile.am (1.79), tests/exceptions1.cc (1.10),
	  tests/h79widening1.cc (1.1), tests/h79widening2.cc (1.1),
	  tests/h79widening3.cc (1.1), tests/limitedh79widening1.cc (1.1),
	  tests/limitedh79widening2.cc (1.1), tests/limitedwideningcc921.cc
	  (1.2), tests/limitedwideningcc922.cc (1.2), tests/permute.cc
	  (1.18), tests/wideningcc921.cc (1.3), tests/wideningcc922.cc
	  (1.3), tests/wideningcc923.cc (1.2): The widening is now called
	  H79 not to confuse the user.

2002-06-25 Tuesday 06:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.14): %files section for gprolog package fixed.

2002-06-24 Monday 23:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.13): %files section fixed for the yap package.

2002-06-24 Monday 22:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/Makefile.am (1.14): Do not forget
	  yap_clpq2.pl.

2002-06-24 Monday 21:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.58): Should now contain
	  all the information need to use the Prolog interface.

2002-06-24 Monday 18:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.187), Polyhedron.defs.hh (1.125): The
	  detailed comments about class Polyhedron improved.  Better
	  marking the start of detailed doxygen sections in the
	  documentation of Polyhedron methods (using /*! ... */ instead of
	  multi-line //!).  Adjusted a couple of old comments saying that
	  the return value of minimize() was `true' when the polyhedron is
	  found to be empty.

2002-06-24 Monday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.22): Added definitions for
	  libppl_gprolog_la_LIBADD and libppl_gprolog_la_LDFLAGS.

2002-06-24 Monday 17:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.12): The %files sections of each package are now
	  complete.

2002-06-24 Monday 17:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.57): Dealt with the
	  issue of initialization and finalization.

2002-06-24 Monday 17:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.21): Install also
	  ppl_gprolog.pl.

2002-06-24 Monday 17:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.56): Reorganization
	  started.

2002-06-24 Monday 15:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* NEWS (1.25), STANDARDS (1.3): Minor spelling/grammar corrections.

2002-06-24 Monday 15:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.124), Polyhedron.inlines.hh (1.38):
	  Adding short doxygen comment to Polyhedron related functions.

2002-06-24 Monday 14:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* STANDARDS (1.2): Sketching the first rules to obtain a somewhat
	  standard Doxygen documentation style.

2002-06-24 Monday 14:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.186): Polyhedron::remove_dimensions() fixed.

2002-06-24 Monday 14:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/removedim6.cc (1.6): This test was carefully written so as
	  to cover a bug in the library: fixed.

2002-06-24 Monday 13:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.18): Final delete_Polyhedron for Q
	  now replaced by cleanup call and by adding polyhedron Q to list
	  of used polyhedra in head of solve_query.

2002-06-24 Monday 13:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.185), Polyhedron.defs.hh (1.123): Going on
	  enforcing new rules on doxygen comments of class Polyhedron.

2002-06-24 Monday 12:51  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.16): Improved layout and
	  comments.  Simplified and renamed some tests while adding others.

2002-06-24 Monday 12:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/configure.ac (1.7): Fixed typo in a comment.

2002-06-24 Monday 12:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.48): Effectively disable the
	  interface/Prolog/Ciao directory.

2002-06-24 Monday 11:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.54), GenSys.defs.hh (1.68),
	  Generator.defs.hh (1.63): Added examples to ConSys and GenSys
	  documentation using strict inequalities and closure points.
	  Improved terminology note point/vertex in Generator.

2002-06-24 Monday 11:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Poly_Con_Relation.defs.hh (1.8): Missing full stop added.

2002-06-24 Monday 08:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.24): Distribute also
	  ppl_swiprolog.pl.

2002-06-24 Monday 00:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.184), Polyhedron.defs.hh (1.122),
	  Polyhedron.inlines.hh (1.37): Started uniformizing doxygen
	  comments of class Polyehdron according to new rules.

2002-06-24 Monday 00:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.inlines.hh (1.20), GenSys.inlines.hh (1.22),
	  LinExpression.inlines.hh (1.19), Row.inlines.hh (1.27),
	  SatMatrix.inlines.hh (1.13), SatRow.inlines.hh (1.16): Relating
	  std::swap functions to the corresponding classes.

2002-06-23 Sunday 22:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.48): Surrounding the   #define
	  EXTRA_NORMALIZATION 0 with   #ifndef EXTRA_NORMALIZATION.

2002-06-23 Sunday 22:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.55), ppl_prolog.icc
	  (1.56), Ciao/ppl_ciao.cc (1.11), GNU/ppl_gprolog_sd.cc (1.6),
	  SICStus/ppl_sicstus_sd.cc (1.19), SWI/Makefile.am (1.23),
	  SWI/ppl_swiprolog.cc (1.43), SWI/ppl_swiprolog.pl (1.1),
	  YAP/Makefile.am (1.13), YAP/ppl_yap.cc (1.35): Avoid unnecessary
	  differences in the implementation of the various Prolog
	  interfaces.  Hook ppl_Prolog_sysdep_deinit() added.

2002-06-23 Sunday 22:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.35), ConSys.defs.hh (1.53), GenSys.cc (1.56),
	  Matrix.cc (1.38), Matrix.defs.hh (1.28), Matrix.inlines.hh
	  (1.24): Fixed doxygen comments in class Matrix.  Changed raw
	  output methods get() and print() to also read/write information
	  about topology. Changed the corresponding methods of ConSys and
	  GenSys so that they no longer output this information.

2002-06-23 Sunday 18:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.28), Generator.cc (1.34): Using flag
	  EXTRA_NORMALIZATION instead of STRONG_NORMALIZATION.

2002-06-23 Sunday 18:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Init.defs.hh (1.3): Added short doxygen comment to class
	  Init.

2002-06-23 Sunday 18:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.183), tests/timeelapse5.cc (1.2):
	  Implementation of time_elapse corrected and cleaned.	The test
	  timeelapse5 corrected according to the new specification.

2002-06-23 Sunday 15:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Makefile.am (1.17): The Ciao-Prolog interface
	  will not be included in PPL 0.4.

2002-06-23 Sunday 15:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/: Makefile.am (1.12), ppl_yap.cc (1.34),
	  yap_clpq.pl (1.5), yap_clpq2.pl (1.1): The YAP interface is now
	  complete and running.

2002-06-22 Saturday 11:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Topology.hh (1.5): Nothing (apart comments) should follow
	  #endif.

2002-06-22 Saturday 08:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/globals.hh (1.18): Long comment for class Throwable improved.
	  Function maybe_abandon() related to class Throwable.

2002-06-22 Saturday 08:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Poly_Con_Relation.defs.hh (1.7), Poly_Gen_Relation.defs.hh
	  (1.7): Comments of *_Relation classes adapted to new doxygen
	  rules.

2002-06-21 Friday 23:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.52), GenSys.defs.hh (1.67),
	  Generator.defs.hh (1.62), Topology.hh (1.4): Adapted doxygen
	  comments of classes ConSys and GenSys to the new style.  Added
	  short description for the enumeration Topology (in the devref
	  manual).

2002-06-21 Friday 22:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.35): No longer use __BEGIN_DECLS and
	  __END_DECLS (so as not to provoke pollution).  Use a brief only
	  description for the opaque pointers.	Undefine
	  PPL_TYPE_DECLARATION as soon as we are done with it.
	  Documentation for all the *_OK() functions improved: they do not
	  always make noise (if the compilation was done with NDEBUG
	  defined, they do not make any noise).

2002-06-21 Friday 21:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/C_Polyhedron.defs.hh (1.11): Alignment fixed in a comment.

2002-06-21 Friday 19:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.27), Constraint.defs.hh (1.61),
	  Constraint.inlines.hh (1.36), Generator.defs.hh (1.61),
	  LinExpression.defs.hh (1.43): Documentation of classes
	  LinExpression, Constraint and Generator adapted to the new
	  doxygen rules.

2002-06-21 Friday 19:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.10), NNC_Polyhedron.defs.hh (1.14):
	  Avoiding repetitions due to REPEAT_BRIEF = YES.

2002-06-21 Friday 19:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.18),
	  devref-print.doxyconf-latex.in (1.18), devref.doxyconf-html.in
	  (1.19), user-browse.doxyconf-latex.in (1.12),
	  user-print.doxyconf-latex.in (1.12), user.doxyconf-html.in
	  (1.14): Changed doxygen configuration files so that brief
	  comments are always repeated at the beginning of long comments
	  (REPEAT_BRIEF = YES).

2002-06-21 Friday 15:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.9), NNC_Polyhedron.defs.hh (1.13):
	  For classes C_Polyhedron and NNC_Polyhedron, adopting the new
	  doxygen standards about brief/long comments.

2002-06-21 Friday 15:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.defs.hh (1.27), Row.inlines.hh (1.26): Non-friend
	  but related functions should have the \relates special doxygen
	  command.

2002-06-21 Friday 15:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/SatRow.cc (1.9): As things are now, doxygen comments to
	  friend functions should not have the \relates special command.

2002-06-21 Friday 09:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.47): Use C to test the presence and usability of
	  <glpk.h>.  Use the new style AC_LANG(LANGUAGE) macro.

2002-06-21 Friday 08:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.20): Additions
	  MOSTLYCLEANFILES.

2002-06-20 Thursday 22:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.54),
	  track_allocation.hh (1.6): Prolog allocation tracking properly
	  reimplemented.

2002-06-20 Thursday 22:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.17): Singleton variable renamed so
	  as to disable the corresponding warning.

2002-06-20 Thursday 22:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.cc (1.2): Do not redefine the default arguments.

2002-06-20 Thursday 21:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.73): A few improvements in the first
	  paragraph of the introduction.  Better explained what a preimage
	  is and some chnages to the paragraph on the DD method.

2002-06-20 Thursday 21:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Row.cc (1.38), Row.defs.hh (1.47), Row.inlines.hh (1.25),
	  SatMatrix.cc (1.17), SatMatrix.defs.hh (1.19),
	  SatMatrix.inlines.hh (1.12), SatRow.cc (1.8), SatRow.defs.hh
	  (1.15), SatRow.inlines.hh (1.15), Status.defs.hh (1.17): Added
	  \relates doxygen commands to match related function declarations
	  and definitions.

2002-06-20 Thursday 13:50  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.72): Reordered the bibliography to be
	  alphabetical.  Changed the syntax in Bounded Polyhedra.  Moved
	  Rational Polyhedra to end of section on representations (it needs
	  the definition of constraint representation).  Comment in
	  Generators Representation wrt this moved to the Rational one.
	  Small change of wording to Points... paragraph.

2002-06-20 Thursday 13:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.53): Corrected the
	  grammar rules for Rational and made other changes related to
	  this.

2002-06-20 Thursday 12:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.37): Functions dealing with closure
	  points and strict inequalities were still commented out: fixed.

2002-06-20 Thursday 12:18  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.52): Improvements to
	  grammar rules.  List_of_Constraints and List_of_Generators now
	  specified formally as Constraint_System and Generator_System.

2002-06-20 Thursday 12:01  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.51): Improved
	  description of "relation with" predicates.

2002-06-20 Thursday 11:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.50): In the grammar
	  rules Numerator and Denominator are non-terminals and should
	  start with capitals.

2002-06-20 Thursday 11:33  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.49): Many improvements,
	  including: Where comments were repeated elswhere (ie
	  compatibility rules) they have been removed.	Where possible,
	  references to relevant sections in the introduction have been
	  made.  Grammar rule for Relation added.

2002-06-20 Thursday 11:28  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.71): Improved the paragraph on topological
	  compatibility.

2002-06-20 Thursday 09:58  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.16): Cleaned up previous changes.

2002-06-20 Thursday 08:59  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.15): Revised the way unwanted
	  polyhedron are removed.  It has not been checked yet for leaks.

2002-06-20 Thursday 08:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.14): PPL is the right acronym in
	  normal text.

2002-06-20 Thursday 08:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/expected2 (1.3): Corrected with the right
	  results.

2002-06-20 Thursday 07:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.13): Bug fixed and I hope the
	  variable ordering is now stable so that the constraints are
	  presented uniformly in all Prologs.

2002-06-19 Wednesday 23:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.60), Generator.defs.hh (1.60),
	  Generator.inlines.hh (1.31), Variable.defs.hh (1.19): Using the
	  \relates doxygen special command to have non-member and
	  non-friend functions listed in the related classes.

2002-06-19 Wednesday 22:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.55), track_allocation.hh
	  (1.5): Leave the responsibility of TRACK_ALLOCATION to
	  track_allocation.hh.

2002-06-19 Wednesday 22:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.12): A couple of trivial formatting
	  changes.

2002-06-19 Wednesday 20:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.20), STANDARDS (1.1): The `STANDARDS' file will
	  contain a description of our coding standards.

2002-06-19 Wednesday 20:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: clpq.pl (1.12), clpq2.pl (1.11): Use a
	  uniform coding style.

2002-06-19 Wednesday 18:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.19): Use the 2nd CLP(Q)
	  interpreter for regression testing.

2002-06-19 Wednesday 18:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.22): Fixed the dependencies
	  of the `check-local' target.

2002-06-19 Wednesday 18:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.10): Fixed calls meant to be to
	  ppl_delete_Polyhedron/1.

2002-06-19 Wednesday 18:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: expected2 (1.2), check_script2 (1.2):
	  Trailing blank line removed.

2002-06-19 Wednesday 17:27  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.48): Many ongoing
	  changes.

2002-06-19 Wednesday 16:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Makefile.am (1.16): Distributes also
	  check_script2 and expected2.

2002-06-19 Wednesday 16:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.47): Corrected a typo
	  in the first paragraph about the SICStus Prolog interface.

2002-06-19 Wednesday 16:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.34): Corrected a typo in the
	  documentation of PPL_CONSTRAINT_TYPE_GREATER_THAN.

2002-06-19 Wednesday 16:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Variable.defs.hh (1.18): Adjusted comment about the
	  constructor.

2002-06-19 Wednesday 16:01  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.70): Improvements to the space dimension
	  and the relation with paragraphs.

2002-06-19 Wednesday 15:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.121), globals.hh (1.17): Added a
	  short description for class Throwable.  Corrected a typo in
	  comment for remove_dimensions.

2002-06-19 Wednesday 15:18  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.69): Bounding box paragraph improved a
	  little.

2002-06-19 Wednesday 14:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.68): Corrected spurious uses of the macro
	  \mathord.  Some improvements in the paragraph on bounding boxes:
	  the standard notation for the i-th vector of the canonical base
	  is \vect{e}_i.

2002-06-19 Wednesday 14:48  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.67): Changes to relation-wirh and widening
	  paragraphs.

2002-06-19 Wednesday 14:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/sp_clpq.pl (1.7): Import append/3 and
	  member/2 from library(lists).

2002-06-19 Wednesday 14:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/clpq2.pl (1.9): Avoid defining append/3 and
	  member/2, since they are defined as built-ins or provided as
	  library predicates by any supported Prolog implementation
	  (SWI-Prolog seems to be annoyed if a user program tries to
	  redefine them).

2002-06-19 Wednesday 14:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.4): Upgraded from the CVS version of libtool.

2002-06-19 Wednesday 14:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.27), sp_clpq.pl (1.6):
	  Use the 2nd CLP(Q) interpreter for regression testing.

2002-06-19 Wednesday 14:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Makefile.am (1.15): Distribute also the tests
	  for strict inequalities.

2002-06-19 Wednesday 14:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.66): Changes in the paragraph on the
	  relation-with operators.

2002-06-19 Wednesday 13:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/Makefile.am (1.18), SWI/Makefile.am
	  (1.21): Use the configured version of libtool.

2002-06-19 Wednesday 11:43  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.46): Changed the
	  description for the assignment predicates.

2002-06-19 Wednesday 11:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.65): A first draft for a paragraph on the
	  relation-with operators.

2002-06-19 Wednesday 10:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.64): Using the macro \nonnegRset in the
	  paragraph defiing extreme rays.

2002-06-19 Wednesday 10:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.63), ppl.sty (1.10): Some improvements
	  in the introduction. Redefined the command \vec following
	  llncs.cls.

2002-06-19 Wednesday 08:03  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.45), pl_check.pl
	  (1.15), ppl_prolog.icc (1.54), Ciao/ppl_ciao.pl (1.15),
	  GNU/ppl_gprolog.pl (1.12), SICStus/ppl_sicstus_sd.cc (1.18),
	  SWI/ppl_swiprolog.cc (1.42), YAP/ppl_yap.cc (1.33): Predicates
	  ppl_Polyhedron_topological_closure_assign and
	  ppl_Polyhedron_is_topologically_closed added.

2002-06-19 Wednesday 08:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.36), interfaces/C/ppl_c.h (1.33),
	  src/Polyhedron.defs.hh (1.120): Added topological closure test
	  and assignment to the C interface.

2002-06-19 Wednesday 07:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/schedule.clpq (1.3): Use a uniform syntax.

2002-06-19 Wednesday 07:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/Makefile.am (1.11): Checking mechanism
	  fixed (but still commented out).

2002-06-19 Wednesday 07:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: check_script2 (1.1), expected2 (1.1),
	  SWI/Makefile.am (1.20): Test also with clpq2.pl.

2002-06-19 Wednesday 07:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: clpq.pl (1.11), clpq2.pl (1.8): Improved the
	  query for more solutions.

2002-06-18 Tuesday 18:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.14): Use
	  use_foreign_library/1 instead of use_foreign_source/1.

2002-06-18 Tuesday 17:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.53): Indentation fixed.

2002-06-18 Tuesday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/ppl_ciao.pl (1.13): Declarations
	  completed.

2002-06-18 Tuesday 17:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.62): Corrected a typo in the definition of
	  closed polyhedra.  Improved the paragraph on dimension
	  compatibility to make it independent from th epolyhedra topology.

2002-06-18 Tuesday 15:51  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.7): Just a little more robust in
	  that it fails if there are variables in non-integer positions in
	  a query rather than crashing.

2002-06-18 Tuesday 15:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.14): Tidied the tests on
	  bounding boxes.

2002-06-18 Tuesday 14:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.44), pl_check.pl
	  (1.13), ppl_prolog.icc (1.52), Ciao/ppl_ciao.pl (1.12),
	  GNU/ppl_gprolog.pl (1.11), SICStus/ppl_sicstus_sd.cc (1.17),
	  SWI/ppl_swiprolog.cc (1.41), YAP/ppl_yap.cc (1.32):
	  ppl_new_Polyhedron_from_ConSys and ppl_new_Polyhedron_from_GenSys
	  renamed ppl_new_Polyhedron_from_constraints and
	  ppl_new_Polyhedron_from_generators, respectively.

2002-06-18 Tuesday 12:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.61): Added a preamble based on the ppl
	  home web page.

2002-06-18 Tuesday 12:02  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.60): Reorganised the introductory
	  sections.

2002-06-18 Tuesday 11:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.inlines.hh (1.35): Corrected a trivial bug just
	  introduced in   Constraint operator>(const LinExpression& e1,
	  const LinExpression& e2).

2002-06-18 Tuesday 10:48  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/schedule.clpq (1.2): Improved layout.

2002-06-18 Tuesday 10:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq2.pl (1.6), schedule.clpq (1.1): clpq2.pl
	  now allows Herbrand terms as arguments including lists.
	  schedule.clpq tests the strict inequalities in clpq2.pl

2002-06-18 Tuesday 10:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.inlines.hh (1.34): Avoiding the creation of
	  temporaries in   Constraint operator>(const LinExpression& e1,
	  const LinExpression& e2)   Constraint operator>(const Integer& n,
	  const LinExpression& e)   Constraint operator>(const
	  LinExpression& e, const Integer& n).

2002-06-18 Tuesday 08:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.59): Paragraph for widening improved.
	  Paragraph for time-elapse added (just a reference to the 1997
	  Halbwachs paper).

2002-06-18 Tuesday 07:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.31): Code for testing YAP
	  exceptions temporarily included.

2002-06-18 Tuesday 00:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.182), Polyhedron.defs.hh (1.119): Private
	  methods strongly_minimize* now return a boolean which is false if
	  the result is an empty polyhedron (this is consistent with the
	  behavior of private method minimize()).  Patched method
	  widening_CC92_assign() to also work for NNC polyhedra.

2002-06-17 Monday 23:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/: Makefile.am (1.10), ppl_yap.pl (1.5),
	  yap_clpq.pl (1.4): Some progress in the support for YAP.

2002-06-17 Monday 22:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.37), Row.defs.hh (1.46), Row.inlines.hh (1.24):
	  The NDEBUG symbol no longer changes data layout.  Now, to obtain
	  a version of Row where each object remembers its own capacity,
	  the macro EXTRA_ROW_DEBUG must evaluate to true (whether this
	  capacity is tested in run-time assertions or not depends, as
	  usual, on the NDEBUG macro not being or being defined).

2002-06-17 Monday 18:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.78), wideningcc921.cc (1.2),
	  wideningcc922.cc (1.2), wideningcc923.cc (1.1): Added a new tests
	  showing a bug in the current implementation of
	  widening_CC92_assign, when the arguments are NNC polyhedra.
	  Corrected the output of the other widening tests.

2002-06-17 Monday 18:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.inlines.hh (1.33), LinExpression.cc (1.12),
	  LinExpression.defs.hh (1.42), LinExpression.inlines.hh (1.18):
	  Added LinExpression& operator-=(LinExpression& e1, const
	  LinExpression& e2), LinExpression& operator-=(LinExpression& e,
	  const Variable& v), and LinExpression& operator-=(LinExpression&
	  e, const Integer& n).  Useless creation of a temporary avoided
	  thanks to the second of those.

2002-06-17 Monday 17:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.58),
	  interfaces/Prolog/Prolog_interface.dox (1.43): Added the
	  condition that the CC92-widening requires the polyhedra to have
	  the same topology.

2002-06-17 Monday 17:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.23): We now have complete support for bounding boxes.
	  List a couple of pending efficiency issues.

2002-06-17 Monday 17:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.57), interfaces/C/ppl_c.h (1.32),
	  interfaces/Prolog/Prolog_interface.dox (1.42), src/Polyhedron.cc
	  (1.181), src/Polyhedron.defs.hh (1.118): Added a draft paragraph
	  about widening (and CC92-widening) to definitions.dox.  Replaced
	  "widening" by CC92-widening" in the comments about the widening
	  operators.

2002-06-17 Monday 16:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.55), Polyhedron.cc (1.180): All the FIXME's in
	  Polyhedron.cc and GenSys.cc transformed into TODO's, since they
	  were just place-holders for possible performance improvements.

2002-06-17 Monday 16:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.35), ppl_c.h (1.31): Added interfaces
	  function for the copy constructors of classes Constraint and
	  Generators and for the constructors of a LinExpression from a
	  Constraint/Generator.

2002-06-17 Monday 15:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog.pl (1.10): The two widening
	  predicates have been renamed.

2002-06-17 Monday 15:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.24), interfaces/C/ppl_c.cc (1.34), interfaces/C/ppl_c.h
	  (1.30), interfaces/Prolog/Prolog_interface.dox (1.41),
	  interfaces/Prolog/pl_check.pl (1.12),
	  interfaces/Prolog/ppl_prolog.icc (1.51),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.11),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.16),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.40),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.30), src/Polyhedron.cc
	  (1.179), src/Polyhedron.defs.hh (1.117), tests/.cvsignore (1.3),
	  tests/Makefile.am (1.77), tests/exceptions1.cc (1.9),
	  tests/limitedwidening1.cc (1.8), tests/limitedwidening2.cc (1.5),
	  tests/limitedwideningcc921.cc (1.1),
	  tests/limitedwideningcc922.cc (1.1), tests/permute.cc (1.17),
	  tests/widening1.cc (1.5), tests/widening2.cc (1.3),
	  tests/wideningcc921.cc (1.1), tests/wideningcc922.cc (1.1):
	  Widening methods, functions and test programs renamed so as to
	  make clear that (currently) our widenings are extensions of the
	  one proposed in the PLILP'92 paper by Cousot & Cousot.

2002-06-17 Monday 13:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.29): Added comment to functions building
	  polyhedra from bounding boxes.

2002-06-17 Monday 12:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq.pl (1.10): clpq.pl only uses C polyhedron
	  again.

2002-06-17 Monday 12:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.8), NNC_Polyhedron.defs.hh (1.12),
	  Polyhedron.defs.hh (1.116), globals.hh (1.16): Added
	  documentation for constructor of C_ and NNC_ polyhedra out of a
	  bounding box.  The comment on the C_Polyhedron destructor is now
	  a proper doxygen comment.  Added a short description doc for
	  struct FromBoundingBox to avoid cluttering the ``PPL Compound
	  List'' page.

2002-06-17 Monday 11:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.defs.hh (1.41): Corrected typo in documentation
	  of   explicit LinExpression(const Generator& g);

2002-06-17 Monday 10:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.115): Improved documentation of
	  poly_difference_assign* methods, stating that topological closure
	  is enforced when *this is a C_Polyhedron.

2002-06-17 Monday 10:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.defs.hh (1.40): Constructors of a LinExpression
	  out of a Constraint/Generator made public.  Added a more detailed
	  comment about the unicity of the built expression.

2002-06-17 Monday 10:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.inlines.hh (1.32): Removed FIXME's about the
	  efficiency of row-type setting methods.

2002-06-17 Monday 08:59  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.40), clpq.pl (1.9):
	  clpq.pl is updated to allow for strict constraints.  Improved
	  comments for new polyhedron predicates from consys, gensys and
	  boxes.

2002-06-17 Monday 08:47  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.56): Paragraphs on intervals and bounding
	  boxes improved.

2002-06-17 Monday 08:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.cc (1.5), Watchdog.defs.hh (1.3): Use #ifdef
	  to test configuration symbols that may be undefined or defined to
	  1.

2002-06-17 Monday 08:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.37): It is non-standard to omit the second
	  argument of std::vector::iterator std::vector::insert(iterator
	  position, const T& x).

2002-06-17 Monday 07:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.inlines.hh (1.19), Constraint.cc (1.26),
	  Constraint.inlines.hh (1.31), GenSys.inlines.hh (1.21),
	  Generator.inlines.hh (1.30), LinExpression.inlines.hh (1.17),
	  Row.defs.hh (1.45): Reduce our dependence on the PPL_HIDDEN
	  trick.

2002-06-16 Sunday 22:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.h (1.28): Remove non-standard trailing comma.

2002-06-16 Sunday 22:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.inlines.hh (1.30), Generator.inlines.hh (1.29),
	  Matrix.inlines.hh (1.23), Polyhedron.inlines.hh (1.36),
	  Row.inlines.hh (1.23): Make sure the first use of each inline
	  function follows its definition.

2002-06-16 Sunday 20:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.26): Modified SICStus
	  interface makefile to find the ppl library even when this has not
	  been installed yet.

2002-06-16 Sunday 19:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.51), GenSys.defs.hh (1.66),
	  LinExpression.defs.hh (1.39): Reposition friend declarations.
	  Always put the public section before the protected one before the
	  private one.

2002-06-16 Sunday 19:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/LinExpression.defs.hh (1.38): LinExpression(const
	  Constraint&) and LinExpression(const Generator&) made private
	  again, since they expose the library's internals.

2002-06-16 Sunday 19:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.54), Polyhedron.cc (1.178), minimize.cc
	  (1.21), simplify.cc (1.16): No space before question mark in
	  comments.

2002-06-16 Sunday 18:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: generators1.cc (1.6), generators2.cc (1.3): Include
	  <stdexcept>.

2002-06-16 Sunday 17:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.25), Constraint.inlines.hh (1.29),
	  Polyhedron.cc (1.177): Removed CHECKME comments from a few
	  methods of classes Constraint and Polyhedron. A few FIXME changed
	  to CHECKME.

2002-06-16 Sunday 17:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Interval.cc (1.2): Replace `and' by `&&'.

2002-06-16 Sunday 17:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.defs.hh (1.2), BoundingBox.inlines.hh (1.3),
	  C_Polyhedron.defs.hh (1.7), ConSys.defs.hh (1.50),
	  Constraint.defs.hh (1.59), GenSys.defs.hh (1.65),
	  Generator.defs.hh (1.59), Init.defs.hh (1.2), Integer.defs.hh
	  (1.4), Interval.defs.hh (1.4), LinExpression.defs.hh (1.37),
	  Matrix.defs.hh (1.26), NNC_Polyhedron.defs.hh (1.11),
	  Poly_Con_Relation.defs.hh (1.6), Poly_Gen_Relation.defs.hh (1.6),
	  Polyhedron.defs.hh (1.114), Row.defs.hh (1.44), SatMatrix.defs.hh
	  (1.18), SatRow.defs.hh (1.14), Status.defs.hh (1.16),
	  Variable.defs.hh (1.17): Use uniform guards against multiple
	  inclusion.  Include Interval.defs.hh in BoundingBox.defs.hh.

2002-06-16 Sunday 16:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.inlines.hh (1.22), SatRow.inlines.hh (1.14): Fully
	  qualify `vector' as `std::vector'.

2002-06-16 Sunday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/C_Polyhedron.cc (1.3), interfaces/C/ppl_c.cc (1.33): Include
	  <stdexcept>.

2002-06-16 Sunday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.inlines.hh (1.28), Integer.inlines.hh (1.4),
	  LinExpression.defs.hh (1.36), LinExpression.inlines.hh (1.16):
	  Remove unnecessary include files and add some necessary one.

2002-06-16 Sunday 16:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.inlines.hh (1.2), C_Polyhedron.inlines.hh
	  (1.6), ConSys.inlines.hh (1.18), Constraint.inlines.hh (1.28),
	  GenSys.inlines.hh (1.20), Generator.inlines.hh (1.27),
	  Init.inlines.hh (1.2), Integer.inlines.hh (1.3),
	  LinExpression.inlines.hh (1.15), Matrix.inlines.hh (1.22),
	  NNC_Polyhedron.inlines.hh (1.8), Poly_Con_Relation.inlines.hh
	  (1.6), Poly_Gen_Relation.inlines.hh (1.6), Polyhedron.inlines.hh
	  (1.35), Row.inlines.hh (1.21), SatMatrix.inlines.hh (1.11),
	  SatRow.inlines.hh (1.13), Status.inlines.hh (1.8),
	  Variable.inlines.hh (1.9): Guard against multiple inclusion.

2002-06-16 Sunday 16:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.49), GenSys.defs.hh (1.64),
	  LinExpression.defs.hh (1.35), Matrix.defs.hh (1.25),
	  Variable.defs.hh (1.16): Avoid being pedantic when commenting
	  constructors.

2002-06-16 Sunday 15:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.48), GenSys.defs.hh (1.63): All the OK()
	  methods must be public.

2002-06-16 Sunday 15:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in (1.17),
	  doc/devref-print.doxyconf-latex.in (1.17),
	  doc/devref.doxyconf-html.in (1.18), interfaces/C/Makefile.am
	  (1.9), interfaces/Prolog/Ciao/Makefile.am (1.6),
	  interfaces/Prolog/GNU/Makefile.am (1.17),
	  interfaces/Prolog/SICStus/Makefile.am (1.25),
	  interfaces/Prolog/SWI/Makefile.am (1.19),
	  interfaces/Prolog/YAP/Makefile.am (1.9), src/ConSys.defs.hh
	  (1.47), src/Constraint.defs.hh (1.58), src/GenSys.defs.hh (1.62),
	  src/Generator.defs.hh (1.58), src/LinExpression.defs.hh (1.34),
	  src/Makefile.am (1.41), src/Polyhedron.defs.hh (1.113),
	  src/Row.defs.hh (1.43), src/ppl_filter_doxygen.sed (1.2),
	  src/ppl_filter_install.sed (1.2): PPL_INTERNAL has gone: replaced
	  with `private' everywhere.

2002-06-16 Sunday 15:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.24), sp_clpq.pl (1.5):
	  Simplify `make check' in the SICStus directory and solve a `make
	  distcheck' problem.

2002-06-16 Sunday 08:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.16): Generation of gp_clpq
	  fixed.

2002-06-16 Sunday 00:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.50), src/ConSys.cc (1.34),
	  src/ConSys.defs.hh (1.46), src/ConSys.inlines.hh (1.17),
	  src/Constraint.defs.hh (1.57), src/GenSys.cc (1.53),
	  src/GenSys.defs.hh (1.61), src/GenSys.inlines.hh (1.19),
	  src/Generator.defs.hh (1.57), src/LinExpression.defs.hh (1.33),
	  src/Makefile.am (1.40), src/Polyhedron.defs.hh (1.112),
	  src/Polyhedron.inlines.hh (1.34): Phasing out PPL_INTERNAL.

2002-06-15 Saturday 18:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: memory1.cc (1.3), watchdog1.cc (1.8): Be quiet.

2002-06-15 Saturday 18:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.32), interfaces/Prolog/ppl_prolog.icc
	  (1.49), src/C_Polyhedron.defs.hh (1.6),
	  src/C_Polyhedron.inlines.hh (1.5), src/ConSys.defs.hh (1.45),
	  src/Constraint.defs.hh (1.56), src/GenSys.defs.hh (1.60),
	  src/NNC_Polyhedron.defs.hh (1.10), src/NNC_Polyhedron.inlines.hh
	  (1.7), tests/boundingbox2.cc (1.7): Start replacing our ad hoc
	  protection mechanisms with friendship.  Got around the GCC bug
	  described in http://gcc.gnu.org/bugs.html#known by exchanging the
	  order of arguments in the constructors from bounding boxes of
	  C_Polyhedron and NNC_Polyhedron.  The test program
	  boundingbox2.cc has been cleaned up consequently.

2002-06-15 Saturday 17:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.3): Revert previous change: the CVS version of
	  libtool causes more problems than it solves.

2002-06-15 Saturday 17:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.76): Always distribute the sources for
	  watchdog1.

2002-06-15 Saturday 16:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* ltmain.sh (1.2), missing (1.4): Updated to the CVS version of
	  libtool.

2002-06-15 Saturday 14:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.6): For those building in the sources' directory.

2002-06-15 Saturday 14:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/Makefile.am (1.5): dist-hook goes into the unconditional
	  section.

2002-06-15 Saturday 14:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.75): Always distribute $(watchdog1_SOURCES).

2002-06-15 Saturday 14:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/.cvsignore (1.3), tests/.cvsignore (1.2):
	  For those building in the sources' directory.

2002-06-15 Saturday 13:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: NNC_Polyhedron.cc (1.9), NNC_Polyhedron.defs.hh (1.9),
	  Polyhedron.cc (1.176): Corrected method
	  Polyhedron::limited_widening_assign to work with NNC polyehdra.
	  Removed the overriding method from NNC_Polyhedron.

2002-06-15 Saturday 13:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.55): Added comment for
	  construct_eps_geq_zero().

2002-06-15 Saturday 12:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/.cvsignore (1.2), GNU/.cvsignore (1.2),
	  SWI/.cvsignore (1.2), YAP/.cvsignore (1.2), YAP/ppl_yap.cc
	  (1.29), YAP/yap_clpq.pl (1.3): Minor changes to YAP support.
	  Changes for those building in the sources' directory.

2002-06-15 Saturday 12:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.23): Removed
	  ppl_sicstus.pl and sp_clpq.pl from MOSTLYCLEANFILES.

2002-06-14 Friday 23:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.28): Support for YAP almost
	  completed.

2002-06-14 Friday 23:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.48): Include initializer.hh.

2002-06-14 Friday 23:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/initializer.hh (1.2): Added the guard against multiple
	  inclusion.  Include Init.defs.hh.

2002-06-14 Friday 20:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.44), Constraint.defs.hh (1.54),
	  GenSys.defs.hh (1.59): Temporary kludges removed.

2002-06-14 Friday 19:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.47), Ciao/Makefile.am
	  (1.5), Ciao/ppl_ciao.cc (1.10), GNU/Makefile.am (1.15),
	  GNU/ppl_gprolog_sd.cc (1.5), SICStus/Makefile.am (1.22),
	  SICStus/ppl_sicstus_sd.cc (1.15), SWI/Makefile.am (1.18),
	  SWI/ppl_swiprolog.cc (1.39), YAP/Makefile.am (1.8),
	  YAP/ppl_yap.cc (1.27): Include the true sources.

2002-06-14 Friday 19:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.26): Prolog_raise_exception()
	  written.

2002-06-14 Friday 18:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Interval.defs.hh (1.3), Interval.inlines.hh (1.4): Provide
	  a copy constructor and assignment operator for ExtendedRational.

2002-06-14 Friday 18:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox1.cc (1.16): Made it quiet and corrected a
	  comment.

2002-06-14 Friday 18:24  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: boundingbox1.cc (1.15), boundingbox2.cc (1.6): Test file
	  boundingbox1.cc tidied.  Small changes to comments in
	  boundingbox2.cc.

2002-06-14 Friday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.cc (1.2), BoundingBox.defs.hh (1.1),
	  BoundingBox.hh (1.7), BoundingBox.inlines.hh (1.1),
	  BoundingBox.types.hh (1.1), Interval.defs.hh (1.2),
	  Interval.inlines.hh (1.3), Makefile.am (1.39),
	  Polyhedron.inlines.hh (1.33): template <class Box> void
	  Polyhedron::shrink_bounding_box(Box&) redesigned and simplified.
	  Many other improvements in the code for dealing with bounding
	  boxes.

2002-06-14 Friday 17:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox2.cc (1.5): Made boundingbox2.cc quiet.

2002-06-14 Friday 16:29  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox2.cc (1.4): Some tidying of the tests.

2002-06-14 Friday 14:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.55), src/Polyhedron.cc (1.175),
	  src/Polyhedron.defs.hh (1.111): Removed strange mixing of short
	  and detailed style doxygen comments, that was causing a warning
	  when building the documentation.  Improved the user introduction,
	  adding definition of poly-differences.

2002-06-14 Friday 12:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.46): Added to
	  term_to_boundary checks that the input numerator and denominator
	  are integers and that the denominator is positive.

2002-06-14 Friday 10:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.45):
	  ppl_new_Polyhedron_from_bounding_box() fixed and simplified.

2002-06-14 Friday 10:15  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.39): Added a short
	  description for new_Polyhedron_from_bounding_box.

2002-06-14 Friday 09:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.11), ppl_prolog.icc (1.44):
	  Some tidying of the code for
	  ppl_new_Polyhedron_from_bounding_box.

2002-06-14 Friday 08:58  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox2.cc (1.3): Some bugs fixed.

2002-06-13 Thursday 22:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.43): Fixed two occurrences of
	  assignment where a test for equality was intended.

2002-06-13 Thursday 16:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.42): In
	  ppl_new_Polyhedron_from_bounding_box it now fails (ie
	  PROLOG_FAILURE is returned) if the list is not properly
	  terminated or it is not a list.  A few comments added to the
	  code.

2002-06-13 Thursday 16:33  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.10), ppl_prolog.icc (1.41),
	  Ciao/ppl_ciao.pl (1.10), GNU/ppl_gprolog.pl (1.9),
	  SICStus/ppl_sicstus_sd.cc (1.14), YAP/ppl_yap.cc (1.25):
	  Completed the code for ppl_new_Polyhedron_from_bounding_box/3.

2002-06-13 Thursday 14:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.38): Prepare to explain
	  the not-so-easy situation with GNU Prolog.

2002-06-13 Thursday 13:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.cc (1.1), BoundingBox.hh (1.6): Start
	  completing the BoundingBox class.

2002-06-13 Thursday 12:42  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: boundingbox1.cc (1.14), boundingbox2.cc (1.2): More tests
	  added.

2002-06-13 Thursday 11:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.32), tests/Makefile.am (1.74),
	  tests/boundingbox2.cc (1.1): A bug corrected in the constructor
	  of a Polyhedron from a Box.  Added a new test boundingbox2.

2002-06-13 Thursday 08:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/BoundingBox.hh (1.5): Fixed two bugs whereby call-by-value
	  was used instead of call-by-reference.

2002-06-12 Wednesday 19:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.38):
	  ppl_new_Polyhedron_from_bounding_box/3 added.

2002-06-12 Wednesday 17:29  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.40): A start in completing
	  ppl_new_Polyhedron_from_bounding_box.

2002-06-12 Wednesday 15:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/: pl_clpq.cc (1.5), ppl_pl.cc (1.5),
	  ppl_swiprolog.cc (1.37): Also uninstall() "returns" install_t.

2002-06-12 Wednesday 14:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/: pl_clpq.cc (1.4), ppl_pl.cc (1.4),
	  ppl_swiprolog.cc (1.36): Make sure the library is always
	  uninstalled.

2002-06-12 Wednesday 10:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.11): Added file list for package gprolog.  Updated
	  file list for package swi.

2002-06-12 Wednesday 10:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.17): Create dynamic
	  libraries but link statically until we understand whether and if
	  libtool can be made to interoperate with plld.

2002-06-12 Wednesday 10:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.14): Create dynamic
	  libraries but link statically until we understand whether and if
	  libtool can be made to interoperate with gplc.

2002-06-12 Wednesday 08:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.37): Started writing
	  the documentation for the GNU Prolog interface.

2002-06-12 Wednesday 08:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.15): Document struct From_Bounding_Box.

2002-06-11 Tuesday 17:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.54): Added a few words on the double
	  description method.  Adjusted capitalizations.

2002-06-11 Tuesday 15:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.52), Polyhedron.cc (1.174): Enforcing
	  normalization of constraints and generators in Polyhedron methods
	  strongly_minimize_generators(), add_generator(),
	  time_elapse_assign()	 and topological_closure_assign(); the same
	  for method GenSys::add_corresponding_closure_points().

2002-06-11 Tuesday 12:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.24), Constraint.defs.hh (1.53),
	  Generator.cc (1.33): Added method Constraint::OK() to check for
	  normalization of constraints.  Added the same check to method
	  Generator::OK().

2002-06-11 Tuesday 11:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.51), GenSys.defs.hh (1.58), GenSys.inlines.hh
	  (1.18), Polyhedron.cc (1.173): Added method
	  GenSys::const_iterator::skip_forward(): if the generator
	  currently pointed is a closure point and the next generator is
	  the point matching this closure point, then it skips to the next
	  generator. This method is used to skip redundant closure points
	  when iterating through strongly-minimized generator systems.
	  Added note to Polyhedron::strongly_minimize_generators() stating
	  that the approach is correct if the generator system is sorted.

2002-06-11 Tuesday 11:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.defs.hh (1.43): Corrected comment to the method
	  skip_forward().

2002-06-11 Tuesday 11:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.inlines.hh (1.27), Generator.cc (1.32):
	  Enforcing the normalization of constraints and generators.

2002-06-11 Tuesday 09:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.53), ppl.sty (1.9): Better explaning
	  affine transformations.

2002-06-11 Tuesday 09:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.36), pl_check.pl
	  (1.9): Grammar for boxes and description of
	  ppl_Polyhedron_get_bounding_box improved.

2002-06-11 Tuesday 08:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.52): Added a paragraph on topologies and
	  topological compatibility.

2002-06-10 Monday 19:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.21): Fix packaging
	  problem.

2002-06-10 Monday 19:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/boundingbox1.cc (1.13): Updated so as to abide by the new
	  interfaces.

2002-06-10 Monday 18:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.31), interfaces/C/ppl_c.h (1.27),
	  src/BoundingBox.hh (1.4), src/ConSys.defs.hh (1.42),
	  src/Polyhedron.defs.hh (1.110), src/Polyhedron.inlines.hh (1.31):
	  This should be the final version of the interfaces for dealing
	  with bounding boxes.

2002-06-10 Monday 18:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.51): Several improvements and a few
	  corrections.

2002-06-10 Monday 17:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.109), Polyhedron.inlines.hh (1.30):
	  Improvements to the documentation of template <class Box>
	  Polyhedron::Polyhedron(Topology topol, const Box& box).

2002-06-10 Monday 17:09  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.50): A first attempt to define intervals,
	  boxes and bounding boxes.

2002-06-10 Monday 16:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.108), Polyhedron.inlines.hh (1.29):
	  Finished the implementation of constructor   template <class Box>
	  Polyhedron(Topology topol, const Box& box); Changed comments to
	  require that class Box provides a method   bool is_empty();

2002-06-10 Monday 15:37  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.49): Minor improvements and bug fixed in
	  paragraph on the generators representation.

2002-06-10 Monday 14:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.28): Avoid a couple of compiler's
	  warnings.

2002-06-10 Monday 13:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.35): Added grammar for
	  intervals and description for ppl_Polyhedron_get_bounding_box/2

2002-06-10 Monday 11:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox1.cc (1.12): Now it exits with return value 1 if
	  the boxes are not as expected.

2002-06-10 Monday 11:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.39), src/BoundingBox.hh
	  (1.3), src/ConSys.defs.hh (1.41), src/Constraint.defs.hh (1.52),
	  src/GenSys.defs.hh (1.57): ppl_new_Polyhedron_from_bounding_box/3
	  sketched.  Class Parma_Polyhedra_Library::BoundingBox fixed.
	  Inserted several temporary kludges related to the interaction of
	  templates, access control, and the way we produce ppl_install.hh.

2002-06-10 Monday 10:31  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.5): clpq2.pl now can handle strict
	  constraints.

2002-06-10 Monday 10:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/BoundingBox.hh (1.2): Complete this implementation of
	  bounding boxes.

2002-06-10 Monday 10:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.107): Fix the comment fix.

2002-06-10 Monday 10:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.106): Comment fixed.

2002-06-10 Monday 09:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/boundingbox1.cc (1.11): Added operator==() and operator!=()
	  for BInterval and BBox.

2002-06-10 Monday 09:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.38): Formatting changes.

2002-06-10 Monday 09:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox1.cc (1.10): Further small improvements to test
	  file boundingbox1.cc

2002-06-10 Monday 08:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/clpq2.pl (1.4), tests/boundingbox1.cc (1.9):
	  boundingbox1.cc is improved but needs further testing.  clpq2.pl
	  now works with changed interface predicates.

2002-06-10 Monday 08:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.hh (1.9): Only declarations here.

2002-06-09 Sunday 19:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.105): Useless `explicit' qualification
	  removed.

2002-06-09 Sunday 19:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.14), ppl_prolog.pl (1.4),
	  GNU/Makefile.am (1.13), GNU/ppl_gprolog.pl (1.8),
	  GNU/ppl_gprolog_sd.pl (1.11), SICStus/Makefile.am (1.20),
	  SICStus/ppl_sicstus.pl (1.21), SICStus/ppl_sicstus_sd.pl (1.3):
	  Reorganization due to the fact that ppl_prolog.pl was obsolete.

2002-06-09 Sunday 19:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/ppl_c.cc (1.30): Use the new bounding box
	  constructors.

2002-06-09 Sunday 19:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.5), C_Polyhedron.inlines.hh (1.4),
	  NNC_Polyhedron.defs.hh (1.8), NNC_Polyhedron.inlines.hh (1.6),
	  globals.hh (1.14): Differentiate the bounding box constructors
	  for C_Polyhedron and NNC_Polyhedron from all the other
	  constructors.

2002-06-09 Sunday 18:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.34), exceptions.hh
	  (1.6), pl_check.pl (1.8), track_allocation.hh (1.4),
	  Ciao/ppl_ciao.pl (1.9), GNU/gp_clpq.pl (1.5),
	  GNU/ppl_gprolog_sd.pl (1.10), SICStus/ppl_sicstus_sd.pl (1.2),
	  SICStus/sp_clpq.pl (1.4), SWI/pl_clpq.cc (1.3), SWI/pl_clpq.pl
	  (1.3), SWI/ppl_pl.cc (1.3), YAP/ppl_yap.pl (1.4), YAP/yap_clpq.pl
	  (1.2): Copyright and "no warranty" notices added.

2002-06-09 Sunday 16:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.lsm.in (1.3): Updated.

2002-06-09 Sunday 16:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Makefile.am (1.4), configure.ac (1.6): Consistent
	  spelling for Autoconf and Automake.

2002-06-09 Sunday 16:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.46): Set CFLAGS properly.  Quote systematically.

2002-06-09 Sunday 16:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/configure.ac (1.5): Set CFLAGS properly.  Check for
	  header files and library functions only if we are building the
	  library.

2002-06-09 Sunday 16:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.45), Watchdog/configure.ac (1.4): Be more
	  friendly to compilers different from GCC.

2002-06-09 Sunday 14:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.29), ppl_c.h (1.26): Added
	  ppl_new_C_Polyhedron_from_bounding_box() and
	  ppl_new_NNC_Polyhedron_from_bounding_box().

2002-06-09 Sunday 14:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.4), C_Polyhedron.inlines.hh (1.3),
	  NNC_Polyhedron.defs.hh (1.7), NNC_Polyhedron.inlines.hh (1.5),
	  Polyhedron.defs.hh (1.104), Polyhedron.inlines.hh (1.27): Added
	  template <class Box> C_Polyhedron::C_Polyhedron(const Box& box)
	  and template <class Box> NNC_Polyhedron::NNC_Polyhedron(const
	  Box& box).  Added the declaration and documentation and sketched
	  the implementation of template <class Box>
	  Polyhedron::Polyhedron(Topology topol, const Box& box): these
	  constructor allow to builds a polyhedron out of a generic,
	  interval-based bounding box.

	  Documentation of Polyhedron::shrink_bounding_box(Box& box)
	  revised: we now promise to communicate rational numbers using
	  fractions in canonical form.	The fraction n/d is in canonical
	  form if and only if n and d have no common factors and d is
	  positive, 0/1 being the unique representation for zero.

2002-06-09 Sunday 12:31  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.48): Added definitions of "minimized"
	  constraints and generators.

2002-06-09 Sunday 11:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.47): Further updating of the user manual
	  to allow for NNC polyhedra.  Minkowski's and Weil's theorems and
	  some definitions moved to the developers part.

2002-06-09 Sunday 08:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Interval.inlines.hh (1.2): Removed redundant and erroneous
	  default argument specification.

2002-06-08 Saturday 17:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Interval.hh (1.3), Makefile.am (1.13),
	  ppl_prolog.icc (1.37): Use the new implementation of bounding
	  boxes.

2002-06-08 Saturday 17:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/addconstraints2.cc (1.12): Shut up if not noisy.

2002-06-08 Saturday 17:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: BoundingBox.hh (1.1), Interval.cc (1.1), Interval.defs.hh
	  (1.1), Interval.inlines.hh (1.1), Interval.types.hh (1.1),
	  Makefile.am (1.38): New implementation of bounding boxes.

2002-06-08 Saturday 17:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.73), addconstraints2.cc (1.11),
	  boundingbox1.cc (1.8), ehandlers.cc (1.1), ehandlers.hh (1.4),
	  memory1.cc (1.2), print.cc (1.1), print.hh (1.8), smm1.cc (1.5),
	  watchdog1.cc (1.7): Better implementation for auxiliary
	  functions.  Some more cleaning.

2002-06-08 Saturday 12:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Interval.hh (1.2), ppl_prolog.icc (1.36),
	  Ciao/ppl_ciao.cc (1.9), Ciao/ppl_ciao.pl (1.8), GNU/gp_clpq.pl
	  (1.4), GNU/ppl_gprolog_sd.pl (1.9), SICStus/ppl_sicstus_sd.cc
	  (1.13), SWI/ppl_swiprolog.cc (1.35), YAP/ppl_yap.cc (1.24):
	  Initial implementation for ppl_Polyhedron_get_bounding_box/2.
	  ppl_init/0 removed (was an inferior duplicate of
	  ppl_initialize/0).

2002-06-07 Friday 17:31  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.46): On-going reorganisation of
	  introduction based on some of the items suggested by Enea.

2002-06-07 Friday 16:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: exceptions.hh (1.5), ppl_prolog.icc (1.35):
	  The function term_to_polyhedron_handle() replaces
	  get_ph_pointer().  The new function either return a plausible
	  polyhedron handle or throws the `not_a_polyhedron_handle'
	  exception.  All sites that used to call get_ph_pointer() have
	  been consequently simplified.

2002-06-07 Friday 16:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.12): Stub
	  declarations fixed.

2002-06-07 Friday 14:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.172): Corrected a bug in
	  strongly_minimize_constraints() whereby sat_c was declared
	  up-to-date even if it was not the case.

2002-06-07 Friday 13:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.45), ppl.sty (1.8): Some further step
	  toward the reorganization of user-manual intro.

2002-06-07 Friday 13:33  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.33): Documentation for
	  the Prolog interface updated to allow for the change to more
	  generic predicates.

2002-06-07 Friday 13:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/exceptions2.cc (1.6): Typos fixed.

2002-06-07 Friday 12:02  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq.pl (1.8), pl_check.pl (1.7),
	  ppl_prolog.icc (1.34), Ciao/ppl_ciao.pl (1.7),
	  GNU/ppl_gprolog_sd.pl (1.8), SICStus/ppl_sicstus_sd.cc (1.11),
	  SWI/ppl_swiprolog.cc (1.34), YAP/ppl_yap.cc (1.23): All
	  predicates specific to C or NNC now removed and replaced by
	  generic predicates. Documentation needs to be updated.

2002-06-07 Friday 11:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.6), ppl_prolog.icc (1.33),
	  SWI/ppl_swiprolog.cc (1.33): Predicates
	  ppl_new_Polyhedron_from_Polyhedron/4,
	  ppl_new_Polyhedron_from_ConSys/3, and
	  ppl_new_Polyhedron_from_GenSys/3 added - just defined in SWI
	  Prolog in this commit.

2002-06-07 Friday 11:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.32): Explain how to
	  enable polyhedra allocation tracking.

2002-06-07 Friday 10:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.32): Creation and disposal of
	  polyhedra is enabled only if explicitely requested.

2002-06-07 Friday 10:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.31): Remove useless inclusion
	  and using namespace directives.

2002-06-07 Friday 10:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.30): Avoid quoting for better
	  output.

2002-06-07 Friday 10:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: exceptions.hh (1.4), ppl_prolog.icc (1.29):
	  New internal_exception: not_a_polyhedron_kind.  New function
	  term_to_polyhedron_kind() replaces term_to_atom().

2002-06-07 Friday 08:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.28): `a_closed' renamed
	  `a_c'.

2002-06-07 Friday 08:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.27), Ciao/ppl_ciao.cc
	  (1.8), GNU/ppl_gprolog_sd.cc (1.4), SICStus/ppl_sicstus_sd.cc
	  (1.10), SWI/ppl_swiprolog.cc (1.32), YAP/ppl_yap.cc (1.22):
	  Prolog_get_name_arity() renamed Prolog_get_compound_name_arity().

2002-06-07 Friday 08:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.26), Ciao/ppl_ciao.cc
	  (1.7), GNU/ppl_gprolog_sd.cc (1.3), SICStus/ppl_sicstus_sd.cc
	  (1.9), SWI/ppl_swiprolog.cc (1.31), YAP/ppl_yap.cc (1.21):
	  Prolog_get_atom_name() added.

2002-06-07 Friday 07:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Ciao/ppl_ciao.cc (1.6), Ciao/ppl_ciao.pl
	  (1.6), GNU/ppl_gprolog_sd.cc (1.2), SICStus/ppl_sicstus_sd.cc
	  (1.8), SWI/ppl_swiprolog.cc (1.30), YAP/ppl_yap.cc (1.20):
	  Prolog_is_atom() added.

2002-06-06 Thursday 18:30  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.5), ppl_prolog.icc (1.25),
	  SWI/ppl_swiprolog.cc (1.29): Added 2 generic predicates
	  ppl_new_Polyhedron_from_dimension/3 and
	  ppl_new_Polyhedron_empty_from_dimension/3 where the 1st argument
	  must be c or nnc.  The only Prolog system with interface changed
	  is SWI.

2002-06-06 Thursday 17:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.10): The `swi' package has now its `%files'
	  section.

2002-06-06 Thursday 17:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.44): Version number bumped.

2002-06-06 Thursday 17:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.31), SWI/Makefile.am
	  (1.16), SWI/pl_clpq.cc (1.2), SWI/ppl_pl.cc (1.2),
	  SWI/ppl_swiprolog.cc (1.28): Support for SWI-Prolog completed and
	  documented.

2002-06-06 Thursday 15:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.44): Slowly progressing.

2002-06-06 Thursday 12:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.43), ppl.sty (1.7): Started rewriting
	  the introduction to the user manual.

2002-06-06 Thursday 10:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.30): Explained how to
	  use the library from SICStus Prolog.

2002-06-06 Thursday 09:40  Elisa Ricci

	* src/: ConSys.defs.hh (1.40), Constraint.defs.hh (1.51),
	  Generator.defs.hh (1.56), LinExpression.defs.hh (1.32),
	  Matrix.defs.hh (1.24), Polyhedron.defs.hh (1.103), Row.defs.hh
	  (1.42), SatMatrix.defs.hh (1.17), SatRow.defs.hh (1.13),
	  Status.defs.hh (1.15): Now, a Doxygen comment is separated by an
	  empty line from the C++ item that precedes it.

2002-06-05 Wednesday 22:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/: Makefile.am (1.15), ppl_pl.cc (1.1),
	  pplpl.cc (1.2): Renamed pplpl.cc to ppl_pl.cc.

2002-06-05 Wednesday 22:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.9): We will build several RPM packages out of our
	  source tree.

2002-06-05 Wednesday 17:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.23): Added support for timeout-guarded operations.

2002-06-05 Wednesday 17:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.72), timings.cc (1.1), timings.hh (1.1),
	  watchdog1.cc (1.6): When NOISY, watchdog1 prints the time after
	  which the timeout exception has been received.

2002-06-05 Wednesday 17:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.29): Added
	  documentation for the minimized_constraints and
	  minimized_generators predicates.  Removed comments that SWI, GNU,
	  YAP are not yet supported.

2002-06-05 Wednesday 17:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.28), ppl_c.h (1.25): Added support for
	  minimized_constraints() and minimized_generators() to the C
	  interface.

2002-06-05 Wednesday 16:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.24), Ciao/ppl_ciao.pl
	  (1.5), GNU/ppl_gprolog_sd.pl (1.7), SICStus/ppl_sicstus_sd.cc
	  (1.7), SWI/ppl_swiprolog.cc (1.27), YAP/ppl_yap.cc (1.19): All
	  Prolog interfaces now have methods for accessing the minimized
	  constraint and generator systems.

2002-06-05 Wednesday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.13): Simpler and more efficient implementation
	  of Parma_Polyhedra_Library::maybe_abandon().

2002-06-05 Wednesday 16:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: conversion.cc (1.28), globals.hh (1.12): Documentation of
	  `abandon_exponential_computations' changed: we now provide a
	  quite strong guarantee, which is implemented in
	  Polyhedron::conversion().

2002-06-05 Wednesday 15:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.102), tests/NNCminimize1.cc (1.3),
	  tests/NNCminimize2.cc (1.3), tests/NNCminimize3.cc (1.3),
	  tests/NNCminimize4.cc (1.5), tests/NNCminimize6.cc (1.4): Methods
	  strongly_minimize(), strongly_minimize_constraints() and
	  strongly_minimize_generators() are now private; tests changed to
	  call the public methods minimized_constraints() and
	  minimized_generators(), instead.

2002-06-05 Wednesday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.22): More news.

2002-06-05 Wednesday 14:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.21): News items added.  List sorted to match the
	  (subjective) relative importance of the innovations.

2002-06-05 Wednesday 12:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.22): Removed some obsolete entries.

2002-06-05 Wednesday 12:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.20): Mention the addition of the time-elapse operation.

2002-06-05 Wednesday 08:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.19), configure.ac (1.43), doc/Makefile.am (1.18),
	  interfaces/Makefile.am (1.5), interfaces/C/Makefile.am (1.8),
	  interfaces/Prolog/Makefile.am (1.12),
	  interfaces/Prolog/Ciao/Makefile.am (1.4),
	  interfaces/Prolog/GNU/Makefile.am (1.12),
	  interfaces/Prolog/SICStus/Makefile.am (1.19),
	  interfaces/Prolog/SWI/Makefile.am (1.14),
	  interfaces/Prolog/YAP/Makefile.am (1.7), m4/Makefile.am (1.6),
	  src/Makefile.am (1.37), tests/Makefile.am (1.71): File
	  description improved.

2002-06-05 Wednesday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.18): Improved formatting.

2002-06-04 Tuesday 20:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.10), config.sub (1.9): Updated.

2002-06-04 Tuesday 18:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* INSTALL (1.3), ChangeLog (1.8): Updated.

2002-06-04 Tuesday 17:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.3): Updated.

2002-06-04 Tuesday 17:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* BUGS (1.2): Written.

2002-06-04 Tuesday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.13): Do not assume the
	  library has already been installed.

2002-06-04 Tuesday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.11): Do not assume `.' is
	  the first item of the current PATH.

2002-06-04 Tuesday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/Makefile.am (1.10): No longer require that
	  the library is already installed for a successful `make check'.

2002-05-31 Friday 11:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.14), configure.ac (1.42), interfaces/C/Makefile.am
	  (1.7): Improvements in automatic configuration and make file
	  generation.

2002-05-31 Friday 11:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.70), memory1.cc (1.1): To test the
	  allocation error recovery facility of the library.  Not yet
	  operational.

2002-05-31 Friday 11:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/watchdog1.cc (1.5): Minor improvements.

2002-05-30 Thursday 16:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.171): Modified methos strongly_minimize()
	  according to the recent findings by Pat.

2002-05-30 Thursday 15:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.170): In method
	  strongly_minimize_constraints(), corrected handling of the sorted
	  flag for the constraint system and of the changed boolean flag.

2002-05-30 Thursday 15:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.169): In methods strongly_minimize_*(),
	  keeping track of whether or not we modify the considered system.
	  If there has been no changes, the dual system is not flagged as
	  out-of-date at the end of the method.

2002-05-30 Thursday 11:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.168): The method
	  strongly_minimize_generators() now forces all point encodings to
	  have the same epsilon-coordinate (which is 1).

2002-05-29 Wednesday 18:11  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: Prolog_interface.dox (1.28), pl_check.pl
	  (1.4): Documentation now introduces the C and NNC polyhedra.	The
	  grammar rules allow for strict inequalities and closure points.
	  The test file has minor improvements; checking that redundant
	  strict inequalities are ignored when creating a C polyhedron as a
	  copy of an NNC polyhedra.

2002-05-29 Wednesday 15:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: NNCminimize1.cc (1.2), NNCminimize2.cc (1.2),
	  NNCminimize3.cc (1.2), NNCminimize4.cc (1.4), NNCminimize6.cc
	  (1.3): Methods NNC_minimize* renamed as strongly_minimize*

2002-05-29 Wednesday 15:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.167), Polyhedron.defs.hh (1.101): Methods
	  NNC_minimize* renamed as strongly_minimize* and implemented
	  (almost) according to the technical report Q286.  When strongly
	  minimizing a constraint system, we now always remove any
	  eps-upper-bound constraint and we later insert back the
	  constraint eps-leq-one only if that is needed to obtain an
	  epsilon-representation.

2002-05-29 Wednesday 07:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: NNCinclusion1.cc (1.2), NNCminimize6.cc (1.2),
	  boundingbox1.cc (1.7), watchdog1.cc (1.4), widening2.cc (1.2): Be
	  quiet.

2002-05-28 Tuesday 16:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.166): Several simplifications in strong
	  minmization of constraints and generators and in check for
	  topological closure of a NNC polyhedron.

2002-05-28 Tuesday 16:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc (1.31), Generator.defs.hh (1.55): Method
	  is_corresponding_closure_point() renamed as
	  is_matching_closure_point().

2002-05-28 Tuesday 13:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.5), Watchdog/.cvsignore (1.2),
	  interfaces/C/.cvsignore (1.2), interfaces/Prolog/ppl_prolog.icc
	  (1.23), interfaces/Prolog/SICStus/.cvsignore (1.2): For those
	  building in the sources' tree.

2002-05-28 Tuesday 13:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/watchdog1.cc (1.3): Adapted to the new version of the
	  Watchdog library and "abandon" mechanism.

2002-05-28 Tuesday 12:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: globals.cc (1.7), globals.hh (1.11): Improved
	  implementation of the "abandon" mechanism.

2002-05-28 Tuesday 12:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Watchdog.cc (1.4), Watchdog.defs.hh (1.2),
	  Watchdog.inlines.hh (1.2): Better implementation using templates.

2002-05-28 Tuesday 12:12  Elisa Ricci

	* src/Polyhedron.cc (1.165): Corrected an error in
	  Polyhedron::topological_closure_assign(): if we modify the system
	  of constraints or of generators, it is no longer minimized.

2002-05-27 Monday 17:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: pl_check.pl (1.3), ppl_prolog.icc (1.22): Bug
	  in ppl_prolog.icc corrected.	Tests in pl_check.pl amended to use
	  poly_hull and poly_difference instead of convex_hull and
	  convex_difference.

2002-05-27 Monday 16:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/.cvsignore (1.5): For those that build in the source
	  directory.

2002-05-27 Monday 16:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ppl_header.bottom (1.4): Undefine all autoconf macros.

2002-05-27 Monday 16:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/Makefile.am (1.6),
	  interfaces/Prolog/Ciao/Makefile.am (1.3),
	  interfaces/Prolog/GNU/Makefile.am (1.9),
	  interfaces/Prolog/SICStus/Makefile.am (1.18),
	  interfaces/Prolog/SWI/Makefile.am (1.12),
	  interfaces/Prolog/YAP/Makefile.am (1.6), src/Makefile.am (1.36):
	  INCLUDES is deprecated: use AM_CPPFLAGS instead.

2002-05-27 Monday 16:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.69), watchdog1.cc (1.2): Stress test for
	  the timeout facility.

2002-05-27 Monday 15:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Makefile.am (1.3), README (1.3), Timeout.hh (1.3),
	  Watchdog.cc (1.3), Watchdog.defs.hh (1.1), Watchdog.hh (1.3),
	  Watchdog.inlines.hh (1.1), Watchdog.types.hh (1.1), configure.ac
	  (1.3), pwl_filter_doxygen.sed (1.1), pwl_filter_install.sed
	  (1.1), pwl_header.bottom (1.1), pwl_header.middle (1.1),
	  pwl_header.top (1.1): The Watchdog library is now complete.

2002-05-27 Monday 13:21  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.27): Prolog interface
	  predicates and their names in the documentation now agree with
	  each other.

2002-05-26 Sunday 14:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.164): Assertion fixed in
	  time_elapse_assign().

2002-05-26 Sunday 14:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.163): Properly identify time_elapse_assign()
	  when throwing an exception from there.

2002-05-25 Saturday 18:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.35), Row.cc (1.36), SatMatrix.cc (1.16),
	  maxmin.hh (1.3): Baking our own versions of max() and min() was a
	  bad idea.

2002-05-25 Saturday 16:26  Elisa Ricci

	* src/Polyhedron.cc (1.162), src/Polyhedron.defs.hh (1.100),
	  tests/timeelapse1.cc (1.2), tests/timeelapse2.cc (1.2),
	  tests/timeelapse3.cc (1.2), tests/timeelapse4.cc (1.2): Changed
	  the function Polyhedron::time_elapse_assign() so that only
	  polyhedra that are topology-compatible can be used and modified
	  the tests so that the polyhedra satisfy this condition.

2002-05-24 Friday 11:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.161): Corrected method
	  topological_closure_assign(): inserting the constraint
	  eps_leq_one after modifying the polyhedron to enforce the epsilon
	  upper bound.

2002-05-24 Friday 10:34  Elisa Ricci

	* src/Constraint.cc (1.23): Corrected an error in the function
	  Constraint::is_trivial_true(): a strict inequality such as `lhs -
	  k > 0' can not be trivial true if `k' is a non negative integer.

2002-05-24 Friday 07:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.41), tests/Makefile.am (1.68), tests/watchdog1.cc
	  (1.1): Prepare for testing the timeout facility.

2002-05-24 Friday 07:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.17): If we are building the Watchdog library, make
	  sure it is built before entering the `tests' directory.

2002-05-24 Friday 07:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* Watchdog/: Makefile.am (1.2), README (1.2), Timeout.hh (1.2),
	  Watchdog.cc (1.2), Watchdog.hh (1.2), config.h.in (1.2),
	  configure.ac (1.2): Several improvement (but still not
	  operational).

2002-05-24 Friday 07:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.26): Be more specific
	  about how to use the library in SICStus Prolog.

2002-05-23 Thursday 10:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/widening2.cc (1.1): widening2.cc shows a precision problem
	  in Polyhedron::widening_assign().

2002-05-23 Thursday 09:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.67): widening2.cc shows a precision problem
	  in Polyhedron::widening_assign().

2002-05-22 Wednesday 13:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.cc (1.6): Definition of
	  abandon_exponential_computations fixed again.

2002-05-22 Wednesday 13:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/conversion.cc (1.27): Added a call to maybe_abandon(): this
	  is supposed to be called on all the exponential paths within the
	  library and, in such paths, invocations to it should be separated
	  from one another by a distance that is bounded from above by a
	  polynomial of the size of the input to conversion().

2002-05-22 Wednesday 13:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.cc (1.5): Definition of
	  abandon_exponential_computations fixed.

2002-05-22 Wednesday 11:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: convexdifference1.cc (1.10), convexhull1.cc (1.7),
	  convexhull2.cc (1.6), convexhull3.cc (1.6), convexhull4.cc (1.5),
	  randchull1.cc (1.15): Removed and replaced by tests named
	  "poly*".

2002-05-22 Wednesday 11:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.66), NNCminimize5.cc (1.2), append1.cc
	  (1.11), append2.cc (1.12), exceptions1.cc (1.8), permute.cc
	  (1.16), polydifference1.cc (1.1), polyhull1.cc (1.1),
	  polyhull2.cc (1.1), polyhull3.cc (1.1), polyhull4.cc (1.1),
	  randchull1.cc (1.14), randphull1.cc (1.1), widening1.cc (1.4):
	  Renaming convex-hull into poly-hull.

2002-05-22 Wednesday 11:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.160), src/Polyhedron.defs.hh (1.99),
	  interfaces/C/ppl_c.cc (1.27), interfaces/C/ppl_c.h (1.24),
	  interfaces/Prolog/Prolog_interface.dox (1.25),
	  interfaces/Prolog/pl_check.pl (1.2),
	  interfaces/Prolog/ppl_prolog.icc (1.21),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.4),
	  interfaces/Prolog/GNU/ppl_gprolog_sd.pl (1.6),
	  interfaces/Prolog/SICStus/ppl_sicstus_sd.cc (1.6),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.26),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.18): Renamed convex-hull into
	  poly-hull.

2002-05-22 Wednesday 11:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.11): Build the SWI Prolog
	  interface only if SWI Prolog is installed.

2002-05-22 Wednesday 11:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.16), configure.ac (1.40), Watchdog/.cvsignore
	  (1.1), Watchdog/BUGS (1.1), Watchdog/COPYING (1.1),
	  Watchdog/CREDITS (1.1), Watchdog/ChangeLog (1.1),
	  Watchdog/INSTALL (1.1), Watchdog/Makefile.am (1.1), Watchdog/NEWS
	  (1.1), Watchdog/README (1.1), Watchdog/Timeout.hh (1.1),
	  Watchdog/Watchdog.cc (1.1), Watchdog/Watchdog.hh (1.1),
	  Watchdog/config.h.in (1.1), Watchdog/configure.ac (1.1): Even
	  though the Watchdog library is completely independent from the
	  PPL, it will live with it, at least for a while.

2002-05-22 Wednesday 08:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.34), globals.cc (1.4), globals.hh (1.10):
	  New timeout mechanisms.

2002-05-22 Wednesday 08:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.159): Typo fixed.

2002-05-22 Wednesday 08:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/GenSys.cc (1.50): Useless emphasis removed.

2002-05-22 Wednesday 08:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.11), Ciao/Makefile.am (1.2):
	  Compile also the Ciao Prolog interface, if Ciao Prolog is
	  available.

2002-05-22 Wednesday 08:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.16),
	  devref-print.doxyconf-latex.in (1.16), devref.doxyconf-html.in
	  (1.17): Fixes and additions for the developer's documentation of
	  Prolog interfaces.

2002-05-18 Saturday 16:56  Elisa Ricci

	* src/Polyhedron.cc (1.158), src/Polyhedron.defs.hh (1.98),
	  tests/Makefile.am (1.65), tests/exceptions1.cc (1.7),
	  tests/timeelapse1.cc (1.1), tests/timeelapse2.cc (1.1),
	  tests/timeelapse3.cc (1.1), tests/timeelapse4.cc (1.1),
	  tests/timeelapse5.cc (1.1): Added the function void
	  time_elapse_assign(const Polyhedron&) and some tests for it.

2002-05-17 Friday 07:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.17): Commented out statement
	  removed.

2002-05-17 Friday 07:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Ciao/: .cvsignore (1.1), Makefile.am (1.1),
	  ppl_ciao.cc (1.5): Rewritten using the interface provided by Ciao
	  Prolog 1.8 (still not operational).

2002-05-14 Tuesday 09:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/pl_check.pl (1.1): pl_check.pl can be used to
	  run all the interface predicates with simple tests.

2002-05-14 Tuesday 09:08  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq.pl (1.7), ppl_prolog.icc (1.20),
	  GNU/ppl_gprolog_sd.pl (1.5), SICStus/ppl_sicstus_sd.cc (1.5),
	  SWI/ppl_swiprolog.cc (1.25), YAP/ppl_yap.cc (1.16): All interface
	  predicates now renamed and completed apart from
	  shrink_bounding_box predicate.

2002-05-13 Monday 18:17  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.19), GNU/ppl_gprolog_sd.pl
	  (1.4), SICStus/ppl_sicstus_sd.cc (1.4), SWI/ppl_swiprolog.cc
	  (1.24), YAP/ppl_yap.cc (1.15): Prolog interface predicates for
	  removing dimensions renamed.

2002-05-13 Monday 17:58  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.18), ppl_prolog.pl (1.3),
	  GNU/ppl_gprolog_sd.pl (1.3), SICStus/ppl_sicstus_sd.cc (1.3),
	  SWI/ppl_swiprolog.cc (1.23), YAP/ppl_yap.cc (1.14): The "add"
	  predicates renamed or added to the Prolog interface.

2002-05-13 Monday 15:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq.pl (1.6), ppl_prolog.icc (1.17),
	  GNU/ppl_gprolog_sd.pl (1.2), SICStus/ppl_sicstus_sd.cc (1.2),
	  SWI/ppl_swiprolog.cc (1.22), YAP/ppl_yap.cc (1.13): More
	  interface predicates updated for NNC polyhedra

2002-05-13 Monday 10:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.15), configure.ac (1.39): Use --enable-shared when
	  making distcheck.  Make sure we really have the Prolog systems.

2002-05-13 Monday 10:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.10), ppl_prolog.icc (1.16):
	  Always enter subdirectories.	Source file ppl_prolog.icc is a C++
	  file.

2002-05-13 Monday 10:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/: Makefile.am (1.8), ppl_gprolog.cc (1.13),
	  ppl_gprolog.pl (1.7), ppl_gprolog_sd.cc (1.1), ppl_gprolog_sd.pl
	  (1.1): Cleaned up.

2002-05-13 Monday 10:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.17), ppl_sicstus.cc
	  (1.54), ppl_sicstus.pl (1.20), ppl_sicstus_sd.cc (1.1),
	  ppl_sicstus_sd.pl (1.1), sp_clpq.pl (1.3): Cleaned up: works both
	  with static and dynamic linking.

2002-05-13 Monday 10:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/: Makefile.am (1.5), ppl_yap.cc (1.12),
	  ppl_yap.pl (1.3): Cleaned up, but still not operational.

2002-05-10 Friday 13:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.38), interfaces/Prolog/SICStus/Makefile.am
	  (1.16): Some Progress with the SICStus interface.

2002-04-28 Sunday 22:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.26): Formatting change.

2002-04-24 Wednesday 21:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.15): Fixed two declarations
	  of std::ostringstream's.

2002-04-20 Saturday 22:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.inlines.hh (1.25), tests/boundingbox1.cc (1.6):
	  shrink_bounding_box now works for NNC polyhedra defined both with
	  and without strict inequalites.  The test file boundingbox1.cc
	  has been also updated to deal with NNC polyhedra.  Extra tests
	  have been added to check the changes.

2002-04-19 Friday 17:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.14): Now including the
	  closure points in the list of generators is ok when creating new
	  polyhedra from lists of generators in the Prolog interface.

2002-04-19 Friday 16:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.13), GNU/ppl_gprolog.pl
	  (1.6): Predicates for GNU Prolog brought in line with the Prolog
	  interface.

2002-04-19 Friday 15:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.12): Now constraint_term()
	  supports strict inequalities.

2002-04-19 Friday 15:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/inclusion1.cc (1.2): Be quiet.

2002-04-19 Friday 14:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.11): a_strictly_greater_than
	  and a_strictly_less_than renamed a_greater_than and a_less_than.

2002-04-19 Friday 14:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.icc (1.10): Throw an exception
	  instead of aborting in generator_term().

2002-04-19 Friday 14:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.9), GNU/ppl_gprolog.cc
	  (1.12), SICStus/ppl_sicstus.cc (1.53), SWI/ppl_swiprolog.cc
	  (1.21), YAP/ppl_yap.cc (1.11): General cleanup.

2002-04-19 Friday 13:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: clpq.pl (1.5), ppl_prolog.icc (1.8): The
	  order of arguments in the revised predicates is input followed by
	  output.  The ppl_prolog.icc now has code to handle strict
	  inequalities and closure points.  clpq.pl has been updated to use
	  the revised predicates.

2002-04-19 Friday 11:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.20):
	  ppl_delete_polyhedron/2 renamed ppl_delete_Polyhedron/2.

2002-04-19 Friday 11:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.7), SICStus/ppl_sicstus.cc
	  (1.52), SWI/ppl_swiprolog.cc (1.19), YAP/ppl_yap.cc (1.10): The
	  code for ppl_new_NNC_Polyhedron_from_GenSys uncommented.

2002-04-19 Friday 10:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.icc (1.6), SICStus/ppl_sicstus.cc
	  (1.51), SWI/ppl_swiprolog.cc (1.18): ppl_delete_polyhedron
	  renamed ppl_delete_Polyhedron.  SP_STUB_0 macro fixed.

2002-04-19 Friday 10:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/ppl_yap.cc (1.9): Added missing semicolons.

2002-04-19 Friday 10:17  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.icc (1.5): In the copy
	  methods/predicates the arguments have been reversed to match the
	  corresponding ones in the C interface.  Now the 1st argument
	  unifies with a handle for the new polyhedron and the 2nd argument
	  is the handle for the source/original polyhedron.  Predicates
	  affected are: ppl_new_C_Polyhedron_from_C_Polyhedron,
	  ppl_new_NNC_Polyhedron_from_NNC_Polyhedron,
	  ppl_new_C_Polyhedron_from_NNC_Polyhedron,
	  ppl_new_NNC_Polyhedron_from_C_Polyhedron.

2002-04-19 Friday 10:03  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.4), SICStus/ppl_sicstus.cc
	  (1.50), SWI/ppl_swiprolog.cc (1.17), YAP/ppl_yap.cc (1.8):
	  Predicates: ppl_new_C_Polyhedron_from_ConSys,
	  ppl_new_NNC_Polyhedron_from_ConSys,
	  ppl_new_C_Polyhedron_from_GenSys added.

2002-04-19 Friday 08:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.icc (1.3), SICStus/ppl_sicstus.cc
	  (1.49), SWI/ppl_swiprolog.cc (1.16), YAP/ppl_yap.cc (1.7): The
	  new, new_empty and copy predicates have been replaced by ones
	  that allow for C and NNC polyhedra to match the same methods in
	  the C interface.  Propositions ppl_initialize and ppl_finalize
	  added.

2002-04-16 Tuesday 09:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.157): Test NNCminimize6 has shown that our
	  check for topological closure was relying on a false invariant
	  (namely, that in a weakly minimized constraint system any strict
	  inequality can be made redundant by another strict inequality
	  only).  Corrected the implementation of
	  is_topologically_closed().

2002-04-15 Monday 10:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (1.33): Corrected a memory allocation bug in
	  ConSys::insert(const Constraint& c).	Now test NNCminimize6 shows
	  that the strong minimization of constraints for NNC polyhedra
	  does not fully minimize constraint systems, yet.

2002-04-15 Monday 09:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.64), NNCminimize6.cc (1.1): Example
	  NNCminimize6 shows a memory allocation bug in method
	  ConSys::insert(const Constraint&).

2002-04-14 Sunday 17:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.cc (1.30): Avoid redundant test.

2002-04-14 Sunday 17:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.cc (1.22): Factorize some calls to
	  operator<<(std::ostream&, ...).

2002-04-13 Saturday 19:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.24): Avoid shadowing in
	  Polyhedron::shrink_bounding_box().

2002-04-12 Friday 20:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.63), NNCminimize4.cc (1.3),
	  NNCminimize5.cc (1.1): Test NNCminimize5 is a fake test showing
	  that strong minimization problems can arise even when the user is
	  only allowed to interact using constraint systems.

2002-04-12 Friday 20:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.156): When performing strong minimization of
	  constraints, no longer preventing the removal of the \esilon \leq
	  1 constraint.  This modification is justified by the relaxation
	  of the invariant on the class Generator, where we no longer
	  require the coordinate of \epsilon to be \leq 1.

2002-04-12 Friday 09:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.9), config.sub (1.8): Updated.

2002-04-11 Thursday 18:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Interval.hh (1.1), Makefile.am (1.9),
	  ppl_prolog.icc (1.2): Progress in the implementation of
	  ppl_get_bounding_box().

2002-04-11 Thursday 18:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.8), ppl_prolog.icc (1.1),
	  ppl_prolog.outlines.hh (1.26), GNU/ppl_gprolog.cc (1.11),
	  SICStus/ppl_sicstus.cc (1.48), SWI/ppl_swiprolog.cc (1.15),
	  YAP/ppl_yap.cc (1.6): The file `ppl_prolog.outlines.hh' has been
	  renamed `ppl_prolog.icc'.

2002-04-10 Wednesday 12:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.cc (1.29): The OK() function for Generator no
	  longer checks that, for points, the epsilon coordinate is less
	  than or equal to 1 (because strong minimization does not maintain
	  this invariant).

2002-04-10 Wednesday 10:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: SICStus/ppl_sicstus.cc (1.47),
	  SWI/ppl_swiprolog.cc (1.14), YAP/ppl_yap.cc (1.5): Provided the
	  ppl_Prolog_sysdep_init() hook for system-dependent
	  initialization.

2002-04-10 Wednesday 10:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog.cc (1.10):
	  Prolog_raise_exception() implemented.  Provided the
	  ppl_Prolog_sysdep_init() hook for system-dependent
	  initialization.

2002-04-10 Wednesday 10:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.25): Started playing
	  with the ppl_get_bounding_box() interface function.

2002-04-09 Tuesday 18:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.155), Polyhedron.defs.hh (1.97): Added
	  methods   const ConSys& Polyhedron::minimized_constraints()
	  const;   const GenSys& Polyhedron::minimized_generators() const;
	  together with the corresponding (unoptimized) implementations.

2002-04-08 Monday 22:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.154): Typo fixed.

2002-04-08 Monday 22:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.49), GenSys.defs.hh (1.56), Polyhedron.cc
	  (1.153), Polyhedron.defs.hh (1.96): Added first draft for the
	  method Polyhedron::topological_closure_assign().  Also added
	  method GenSys::add_corresponding_points().

2002-04-07 Sunday 15:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.26), ppl_c.h (1.23): Two bugs fixed.
	  The swap functions have been removed.

2002-04-07 Sunday 13:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.152): Avoid an inconsistent mixture of
	  useless emphasizers.

2002-04-07 Sunday 13:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.62), inclusion1.cc (1.1): Test
	  C_Polyhedron::operator<=().

2002-04-07 Sunday 12:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: exceptions1.cc (1.6), exceptions2.cc (1.5): Replace
	  "impossible" with "illegal" when the latter was meant.

2002-04-07 Sunday 12:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.151): There is no such a thing as the
	  reduced scalar product operator^.

2002-04-06 Saturday 08:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* m4/ac_check_gmp.m4 (1.4): Fixed two instances of the use of an
	  inexistent GMP assignment operator from `char*'.  These gave no
	  error because of the C++ pointer to `bool' conversion feature and
	  because GMP had an assignment operator from `bool'.

2002-04-05 Friday 12:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/boundingbox1.cc (1.5): Improved printed results: now says
	  "none" when the denominator of the bound is 0.

2002-04-05 Friday 12:36  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.inlines.hh (1.23), tests/boundingbox1.cc (1.4):
	  The dimension() method removed from BBox.

2002-04-05 Friday 10:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.inlines.hh (1.22), tests/boundingbox1.cc (1.3): In
	  Polyhedron.inlines.hh:    shrink_bounding_box now handles the
	  empty polyhedron correctly.

	  In boundingbox1.cc:	 BBox and Interval improved and many tests
	  added.

2002-04-04 Thursday 14:21  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.inlines.hh (1.21): Initial implementation of
	  Polyhedron::shrink_bounding_box().

2002-04-04 Thursday 13:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.32), GenSys.cc (1.48), Polyhedron.cc (1.150),
	  Row.cc (1.35), Row.defs.hh (1.41): PPL::operator^(const Row&,
	  const Row&) renamed as "reduced_scalar_product".

2002-04-04 Thursday 12:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/boundingbox1.cc (1.2): Use a more concrete bounding-box
	  class.

2002-04-04 Thursday 11:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.15),
	  devref-print.doxyconf-latex.in (1.15), devref.doxyconf-html.in
	  (1.16): Configuration files updated after class names changes.

2002-04-04 Thursday 11:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.types.hh (1.3): Forgot to remove this one.

2002-04-04 Thursday 10:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PolyBase.cc (1.25), PolyBase.defs.hh (1.17),
	  PolyBase.inlines.hh (1.5): Getting rid of these old files.

2002-04-04 Thursday 10:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.149), Polyhedron.defs.hh (1.95),
	  Polyhedron.inlines.hh (1.20): All functions created to throw
	  exceptions are now private methods of the class Polyhedron.
	  Exception messages modified to reflect the changes in the names
	  of the classes and in the names of methods (e.g., add_constraint
	  instead of insert).  Added topology-compatibility test to method
	  swap(Polyhedron& y).	In all public methods, we now first check
	  for topology inconsistencies, then we check for dimension
	  inconsistencies.

2002-04-04 Thursday 10:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.25), ppl_c.h (1.22): Add
	  copy-conversion functions.

2002-04-04 Thursday 08:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.24), ppl_c.h (1.21): Basic interface
	  for the NNC polyhedra.

2002-04-03 Wednesday 19:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/: C/ppl_c.cc (1.23), Prolog/ppl_prolog.outlines.hh
	  (1.24): Allow the manipulation of closed polyhedra only (for the
	  moment).

2002-04-03 Wednesday 19:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.94): Make the destructor public (for
	  the moment).

2002-04-03 Wednesday 18:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.93): Modified doxygen comments to
	  account for the possibility of exceptions caused by incompatible
	  topologies.

2002-04-03 Wednesday 17:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/C_Polyhedron.types.hh (1.2): Cutted (redundant) brief
	  namespace description to avoid a Doxygen warning.

2002-04-03 Wednesday 17:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Row.defs.hh (1.40), Row.inlines.hh (1.20): Some cleaning in
	  the Row::Type class:	- removed the useless static methods;  -
	  the constants NNC and RPI are now tied to the Topology and
	  Row::Kind    enumerations.

2002-04-03 Wednesday 15:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.148), Polyhedron.defs.hh (1.92): All the
	  assertions regarding topology compatibility (but those inside the
	  non-public methods) replaced by run-time checks so that, When
	  identifying a topology mismatch, we now throw an exception.

	  Since wrapper classes C_Polyhedron and NNC_Polyhedron will not
	  override the methods of base class Polyhedron (they will just
	  inherit them), all implementation specific members of Polyhedron,
	  apart from the constructors and assignment, are now declared
	  "private" instead of "protected".

2002-04-03 Wednesday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.61), boundingbox1.cc (1.1): To test
	  Polyhedron::shrink_bounding_box().

2002-04-03 Wednesday 12:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.defs.hh (1.3), NNC_Polyhedron.cc (1.8),
	  NNC_Polyhedron.defs.hh (1.6), Polyhedron.cc (1.147),
	  Polyhedron.defs.hh (1.91): The method   bool
	  is_topologycally_closed() const; is now a method of the _base_
	  class Polyhedron, trivially returning true if the polyhedron is
	  necessarily closed.

2002-04-03 Wednesday 11:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/C_Polyhedron.cc (1.2), src/C_Polyhedron.defs.hh (1.2),
	  src/C_Polyhedron.inlines.hh (1.2), src/Makefile.am (1.33),
	  src/NNC_Polyhedron.cc (1.7), src/NNC_Polyhedron.defs.hh (1.5),
	  src/NNC_Polyhedron.inlines.hh (1.4), src/Polyhedron.cc (1.146),
	  src/Polyhedron.defs.hh (1.90), src/Polyhedron.inlines.hh (1.19),
	  src/conversion.cc (1.26), src/minimize.cc (1.20), src/simplify.cc
	  (1.15), tests/print.hh (1.7): Base class PolyBase renamed (back)
	  as Polyhedron.

2002-04-03 Wednesday 10:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Makefile.am (1.32), src/NNC_Polyhedron.cc (1.6),
	  src/NNC_Polyhedron.defs.hh (1.4), tests/addconstraints1.cc (1.6),
	  tests/addconstraints10.cc (1.5), tests/addconstraints11.cc (1.6),
	  tests/addconstraints2.cc (1.10), tests/addconstraints3.cc (1.3),
	  tests/addconstraints4.cc (1.5), tests/addconstraints5.cc (1.6),
	  tests/addconstraints6.cc (1.7), tests/addconstraints7.cc (1.6),
	  tests/addconstraints8.cc (1.6), tests/addconstraints9.cc (1.7),
	  tests/adddimensions1.cc (1.8), tests/adddimensions2.cc (1.4),
	  tests/adddimensions3.cc (1.6), tests/adddimensions4.cc (1.4),
	  tests/addgenerators1.cc (1.7), tests/addgenerators2.cc (1.7),
	  tests/addgenerators3.cc (1.6), tests/addgenerators4.cc (1.6),
	  tests/addgenerators5.cc (1.6), tests/addgenerators6.cc (1.6),
	  tests/addgenerators7.cc (1.2), tests/affineimage1.cc (1.6),
	  tests/affineimage2.cc (1.5), tests/affinepreimage1.cc (1.5),
	  tests/affinepreimage2.cc (1.5), tests/affinepreimage3.cc (1.5),
	  tests/affinepreimage4.cc (1.6), tests/affinetrans.cc (1.9),
	  tests/append1.cc (1.10), tests/append2.cc (1.11),
	  tests/bounded1.cc (1.3), tests/convexdifference1.cc (1.9),
	  tests/convexhull1.cc (1.6), tests/convexhull2.cc (1.5),
	  tests/convexhull3.cc (1.5), tests/convexhull4.cc (1.4),
	  tests/empty1.cc (1.7), tests/exceptions1.cc (1.5),
	  tests/exceptions2.cc (1.4), tests/generators1.cc (1.5),
	  tests/generators2.cc (1.2), tests/inters1.cc (1.10),
	  tests/inters2.cc (1.13), tests/inters3.cc (1.6), tests/inters4.cc
	  (1.5), tests/inters5.cc (1.7), tests/inters6.cc (1.6),
	  tests/inters7.cc (1.3), tests/limitedwidening1.cc (1.7),
	  tests/limitedwidening2.cc (1.4), tests/onepoint.cc (1.5),
	  tests/permute.cc (1.15), tests/randchull1.cc (1.13),
	  tests/relations1.cc (1.3), tests/relations2.cc (1.4),
	  tests/relations3.cc (1.4), tests/relations4.cc (1.4),
	  tests/relations5.cc (1.4), tests/relations6.cc (1.3),
	  tests/relations7.cc (1.3), tests/relations8.cc (1.3),
	  tests/relations9.cc (1.4), tests/removedim1.cc (1.5),
	  tests/removedim2.cc (1.9), tests/removedim3.cc (1.5),
	  tests/removedim4.cc (1.6), tests/removedim5.cc (1.4),
	  tests/removedim6.cc (1.5), tests/smm1.cc (1.4),
	  tests/universe1.cc (1.3), tests/universe2.cc (1.4),
	  tests/universe3.cc (1.4), tests/universe4.cc (1.4),
	  tests/universe5.cc (1.5), tests/widening1.cc (1.3): Wrapper class
	  Polyhedron renamed as C_Polyhedron.  All test programs modified
	  accordingly.

2002-04-03 Wednesday 10:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: C_Polyhedron.cc (1.1), C_Polyhedron.defs.hh (1.1),
	  C_Polyhedron.inlines.hh (1.1), C_Polyhedron.types.hh (1.1): Added
	  wrapper class C_Polyhedron to implement necessarily closed
	  polyhedra.

2002-04-02 Tuesday 19:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (1.24), tests/addconstraints6.cc (1.6): Corrected
	  stupid bugs related to a misinterpretation of the value returned
	  by minimize().

2002-04-02 Tuesday 18:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.22), ppl_c.h (1.20): All the
	  *_and_minimize functions return a positive integer if the
	  reulting polyhedron is non-empty; they return 0 if it is empty
	  (and, as usual, return a negative number if an error occurred).

2002-04-02 Tuesday 17:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* TODO (1.21): Dealt with the first item (the *_and_minimize one).

2002-04-02 Tuesday 17:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PolyBase.cc (1.23), PolyBase.defs.hh (1.16): All the public
	  methods of PolyBase whose name ends in "_and_minimize" now return
	  a boolean value (which is `false' iff the resulting polyhedron is
	  empty).

2002-04-02 Tuesday 16:48  Elisa Ricci

	* tests/: Makefile.am (1.60), removedim7.cc (1.1), universe6.cc
	  (1.1): Added a test for the functions remove_higher_dimensions()
	  and remove_dimensions() and one for the function check_universe
	  for NNC_Polyhedron.

2002-04-02 Tuesday 16:43  Elisa Ricci

	* tests/exceptions1.cc (1.4): Added a test to show when an
	  exception is thrown in the function convex_difference_assign(ph).

2002-04-02 Tuesday 12:08  Elisa Ricci

	* tests/: Makefile.am (1.59), adddimensions5.cc (1.1),
	  adddimensions6.cc (1.1), adddimensions7.cc (1.1): Added tests for
	  the functions add_dimensions_and_embed and
	  add_dimensions_and_project for NNC_Polyhedron.

2002-04-02 Tuesday 09:43  Elisa Ricci

	* tests/: Makefile.am (1.58), addgenerators7.cc (1.1), print.hh
	  (1.6): Add a test for the function
	  add_generators_and_minimize(gs) for a NNC_Polyhedron.  Changed
	  the functions to print the polyhedra so that they can be used to
	  print also for the NNC polyhedra.

2002-04-02 Tuesday 08:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.22): Some nonsense removed from
	  PolyBase::affine_image() and PolyBase::affine_preimage().

2002-04-02 Tuesday 08:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.21): PolyBase::limited_widening_assign()
	  fixed: it was not checking the return value of
	  PolyBase::update_generators().

2002-03-31 Sunday 23:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.20), interfaces/C/Makefile.am (1.5),
	  interfaces/C/ppl_c.cc (1.21),
	  interfaces/Prolog/Prolog_interface.dox (1.24),
	  interfaces/Prolog/ppl_prolog.outlines.hh (1.23),
	  interfaces/Prolog/ppl_prolog.pl (1.2),
	  interfaces/Prolog/Ciao/ppl_ciao.cc (1.4),
	  interfaces/Prolog/Ciao/ppl_ciao.pl (1.3),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.5),
	  interfaces/Prolog/SICStus/ppl_sicstus.cc (1.46),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.13),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.4), src/PolyBase.cc (1.20),
	  src/PolyBase.defs.hh (1.15), tests/addconstraints11.cc (1.5),
	  tests/addconstraints2.cc (1.9), tests/addconstraints4.cc (1.4),
	  tests/addconstraints6.cc (1.5), tests/addconstraints7.cc (1.5),
	  tests/addconstraints8.cc (1.5), tests/addconstraints9.cc (1.6),
	  tests/adddimensions1.cc (1.7), tests/adddimensions3.cc (1.5),
	  tests/addgenerators1.cc (1.6), tests/addgenerators2.cc (1.6),
	  tests/addgenerators3.cc (1.5), tests/addgenerators4.cc (1.5),
	  tests/addgenerators5.cc (1.5), tests/addgenerators6.cc (1.5),
	  tests/affineimage1.cc (1.5), tests/affineimage2.cc (1.4),
	  tests/affinepreimage2.cc (1.4), tests/affinepreimage3.cc (1.4),
	  tests/affinepreimage4.cc (1.5), tests/append1.cc (1.9),
	  tests/append2.cc (1.10), tests/bounded1.cc (1.2),
	  tests/convexhull3.cc (1.4), tests/convexhull4.cc (1.3),
	  tests/exceptions1.cc (1.3), tests/exceptions2.cc (1.3),
	  tests/inters1.cc (1.9), tests/inters2.cc (1.12), tests/inters3.cc
	  (1.5), tests/inters4.cc (1.4), tests/inters5.cc (1.6),
	  tests/inters6.cc (1.5), tests/inters7.cc (1.2),
	  tests/limitedwidening1.cc (1.6), tests/onepoint.cc (1.4),
	  tests/permute.cc (1.14), tests/randchull1.cc (1.12),
	  tests/relations9.cc (1.3), tests/removedim6.cc (1.4),
	  tests/smm1.cc (1.3), tests/universe2.cc (1.3), tests/universe3.cc
	  (1.3), tests/universe4.cc (1.3), tests/universe5.cc (1.4),
	  tests/widening1.cc (1.2): Renamed Polyhedron::insert(const
	  Constraint&) to Polyhedron::add_constraint(const Constraint&).
	  Likewise, renamed Polyhedron::insert(const Generator&) to
	  Polyhedron::add_generator(const Generator&).

2002-03-31 Sunday 21:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.37), interfaces/C/Makefile.am (1.4): Added a
	  first starting draft of `lpenum', a program to solve linear
	  programming problems by vertex/point enumeration.  Just a toy to
	  test the C interface of the library.

2002-03-31 Sunday 20:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.28), Matrix.cc (1.36), PolyBase.cc (1.19),
	  Row.cc (1.34), SatMatrix.cc (1.15): All the OK() methods are now
	  silent if the NDEBUG symbol is defined.

2002-03-31 Sunday 19:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.18): Always provide default cases in switches.

2002-03-31 Sunday 19:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.39), ConSys.inlines.hh (1.16),
	  Constraint.inlines.hh (1.26), GenSys.defs.hh (1.55),
	  GenSys.inlines.hh (1.17), Generator.inlines.hh (1.26), Matrix.cc
	  (1.35), Matrix.defs.hh (1.23), Matrix.inlines.hh (1.21),
	  PolyBase.cc (1.17), PolyBase.defs.hh (1.14), Row.defs.hh (1.39),
	  Row.inlines.hh (1.19): Do not shadow the members of *this.

2002-03-31 Sunday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.16): Started exploiting the return value of
	  PolyBase::minimize().

2002-03-31 Sunday 11:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.57), widening1.cc (1.1): Test
	  Polyhedron::widening_assign() with empty polyhedra.

2002-03-31 Sunday 10:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.15):
	  PolyBase::intersection_assign_and_minimize() fixed.

2002-03-31 Sunday 10:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.56), inters7.cc (1.1): Test
	  Polyhedron::intersection_assign_and_minimize() with empty
	  polyhedra (exposes bugs in the current implementation of that
	  method).

2002-03-31 Sunday 10:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PolyBase.cc (1.14), PolyBase.defs.hh (1.13):
	  PolyBase::minimize() now returns a Boolean: false if and only if
	  *this turns out to be empty.	Handling of empty polyhedra fixed
	  in PolyBase::convex_hull_assign_and_minimize().

2002-03-31 Sunday 09:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/convexhull4.cc (1.2): Exercise
	  PolyBase::convex_hull_assign_and_minimize() with empty polyhedra
	  in all possible ways (exposes more bugs in the current PolyBase
	  implementation).

2002-03-31 Sunday 08:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.13):
	  PolyBase::convex_hull_assign_and_minimize() fixed.

2002-03-31 Sunday 00:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.55), convexhull4.cc (1.1): Test
	  Polyhedron::convex_hull_assign_and_minimize() with an empty
	  parameter polyhedron.

2002-03-30 Saturday 22:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.20), ppl_c.h (1.19): New interface
	  functions.

2002-03-30 Saturday 15:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: PolyBase.cc (1.12), PolyBase.defs.hh (1.12):
	  PolyBase::generators() fixed: no longer ignoring the return value
	  of PolyBase::update_generators().

2002-03-30 Saturday 11:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (1.11): Corrected bugs in methods insert(g),
	  add_generators(gs) and add_generators_and_minimize(gs): in the
	  case of NNC topology, we were not adding the closure points
	  corresponding to each added point.

2002-03-30 Saturday 11:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.47), GenSys.defs.hh (1.54): Added method
	  GenSys::add_corresponding_closure_points().

2002-03-30 Saturday 11:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.19), ppl_c.h (1.18): Fixed
	  ppl_assign_Coefficient_from_mpz_t() and ppl_Generator_type().

2002-03-30 Saturday 10:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.18), ppl_c.h (1.17): More functions to
	  deal with coefficients.  New function to get the type of a
	  generator.

2002-03-30 Saturday 10:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.inlines.hh (1.4): Added an empty implementation for
	  PolyBase::shrink_bounding_box().

2002-03-30 Saturday 10:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.54), generators2.cc (1.1): New test
	  computing the generators of an empty polyhedron.

2002-03-30 Saturday 09:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.17), ppl_c.h (1.16): New functions and
	  bug fixes.

2002-03-29 Friday 14:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (1.10), src/PolyBase.defs.hh (1.11),
	  tests/NNCminimize4.cc (1.2): Added methods
	  NNC_minimize_generators() and NNC_minimize_constraints(), which
	  enforce NNC-minimization on only one system.	They have a common
	  kernel, which might be factored out in a "generic"
	  NNC-minimization function (something like the simplify() method).
	  Now test NNCminimize4.cc uses the (more lazy)
	  NNC_minimize_constraints() function.

2002-03-29 Friday 10:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.53), NNCminimize4.cc (1.1): New test put
	  under CVS control.

2002-03-28 Thursday 22:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.16), ppl_c.h (1.15):
	  ppl_Polyhedron_shrink_bounding_box() added to the C interface.

2002-03-28 Thursday 20:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc (1.27), Generator.defs.hh (1.54), Matrix.cc
	  (1.34), NNC_Polyhedron.cc (1.5), PolyBase.cc (1.9): Added method
	   bool Generator::is_corresponding_closure_point(const Generator&)
	  const; Methods NNC_Polyhedron::is_necessarily_closed() and
	  PolyBase::NNC_minimize() updated to use the above method; this
	  also corrects a bug in the previous implementations.

	  Added a \param Doxygen command in Matrix.cc to avoid a warning.

2002-03-28 Thursday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.defs.hh (1.10): Redeclared `shrink_bounding_box' as
	  template <class Box> void shrink_bounding_box(Box& box) const;
	  the previous declaration was too concrete.

2002-03-28 Thursday 16:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.defs.hh (1.9): Added the declaration and
	  documentation of template <class Interval> void
	  shrink_bounding_box(std::vector<Interval>& box) const.

2002-03-28 Thursday 15:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.52), NNCinclusion1.cc (1.1),
	  NNCminimize1.cc (1.1), NNCminimize2.cc (1.1), NNCminimize3.cc
	  (1.1): Added a test on the inclusion method for NNC_Polyhedron
	  and three tests for the full minimization of NNC_Polyhedron.

2002-03-28 Thursday 15:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PolyBase.cc (1.8), PolyBase.defs.hh (1.8): Added method
	  PolyBase::NNC_minimize() performing "full" minimization of
	  constraint and generator systems of a NNC_Polyhedron.
	  Temporarily public for testing and debugging purposes.

2002-03-28 Thursday 15:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.cc (1.26): Printing closure points as c(lin-expr).

2002-03-28 Thursday 09:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.31), GenSys.cc (1.46): Methods get() and
	  print() of classes ConSys and GenSys modified in order to:  -
	  read (and print) the new kinds of constraint/generators types;  -
	  check for the correspondence between declared and actual row
	  types    when reading them in;  - check for the well-formedness
	  of the read ConSys/GenSys, using OK().

2002-03-27 Wednesday 19:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.19), TODO (1.19): Updated.

2002-03-27 Wednesday 19:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.18), interfaces/C/ppl_c.cc (1.15),
	  interfaces/Prolog/ppl_prolog.outlines.hh (1.22),
	  src/Constraint.defs.hh (1.50), src/Constraint.inlines.hh (1.25),
	  src/Generator.inlines.hh (1.25), src/Row.defs.hh (1.38),
	  src/Row.inlines.hh (1.18): Constraint::coefficient(void) and
	  Row::coefficient(void) renamed to
	  Constraint::inhomogeneous_term(void) and
	  Row::inhomogeneous_term(void).

2002-03-27 Wednesday 18:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.defs.hh (1.7): Documentation for PolyBase::OK()
	  improved.

2002-03-27 Wednesday 18:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.17), interfaces/C/ppl_c.cc (1.14), src/NNC_Polyhedron.cc
	  (1.4), src/PolyBase.cc (1.7), src/PolyBase.defs.hh (1.6),
	  src/Polyhedron.cc (1.145): Now the default for PolyBase::OK() is
	  not to check for non-emptiness.  This is more consistent since
	  OK() without arguments now checks for well-formedness only as all
	  the other methods with the same name.  Use OK(true) if you want
	  the extra service of non-emptiness checking.

2002-03-27 Wednesday 18:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.30), ConSys.defs.hh (1.38), Constraint.cc
	  (1.21), Constraint.defs.hh (1.49), Constraint.inlines.hh (1.24),
	  GenSys.cc (1.45), GenSys.defs.hh (1.53), Generator.cc (1.25),
	  LinExpression.defs.hh (1.31), Matrix.cc (1.33), Matrix.defs.hh
	  (1.22), Matrix.inlines.hh (1.20), NNC_Polyhedron.cc (1.3),
	  NNC_Polyhedron.inlines.hh (1.3), PolyBase.cc (1.6),
	  PolyBase.defs.hh (1.5), Poly_Con_Relation.defs.hh (1.5),
	  Poly_Gen_Relation.defs.hh (1.5), Row.defs.hh (1.37),
	  Row.inlines.hh (1.17), Topology.hh (1.3): Replaced everywhere
	  "non_necessarily_closed" by "not_necessarily_closed".  Improved
	  the documentation of class Constraint to consider examples using
	  strict inequalities. Added brief description for classes
	  Poly_xxx_Relation and for the const_iterators of ConSys and
	  GenSys.

2002-03-27 Wednesday 16:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/PolyBase.cc (1.5): PolyBase::OK(bool check_not_empty) was
	  disregarding its argument in some cases.  This bug was hiding two
	  bogus assertions in PolyBase::add_constraints() and
	  PolyBase::add_constraints_and_minimize().

2002-03-27 Wednesday 16:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/addconstraints1.cc (1.5): Unused variable removed.

2002-03-27 Wednesday 16:03  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: NNC_Polyhedron.defs.hh (1.3), Polyhedron.defs.hh (1.89):
	  Removed duplicate documentation stuff from Polyhedron.defs.hh.
	  Documented constructors of classes Polyhedron and NNC_Polyhedron.
	  Provided a brief explanation of the reason why we do have 2
	  classes.

2002-03-27 Wednesday 15:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.16): At a closer scrutiny, the <CODE> and </CODE> tags
	  are actually superior to any other alternative.  Remove the TODO
	  item that suggested not to use them.

2002-03-27 Wednesday 12:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.37), GenSys.defs.hh (1.52),
	  Generator.defs.hh (1.53), PolyBase.defs.hh (1.4), Row.cc (1.33):
	  Started adjusting the documentation to made it aware of the new
	  kind of constraints and generators.  Corrected a couple of
	  docuementation problems causing Doxygen warnings.

2002-03-27 Wednesday 10:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (1.4): One FIXME removed: was related to an
	  efficiency concern where we really do not have any efficiency
	  problem.

2002-03-27 Wednesday 08:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.44), PolyBase.cc (1.3): Merged the changes
	  made to the `strict' branch after yesterday's merge.

2002-03-27 Wednesday 08:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.15), src/ConSys.defs.hh (1.36), src/ConSys.inlines.hh
	  (1.15), src/Constraint.defs.hh (1.48), src/Constraint.inlines.hh
	  (1.23), src/GenSys.defs.hh (1.51), src/GenSys.inlines.hh (1.16),
	  src/Generator.defs.hh (1.52), src/Generator.inlines.hh (1.24),
	  src/Integer.defs.hh (1.3), src/LinExpression.defs.hh (1.30),
	  src/LinExpression.inlines.hh (1.14), src/Matrix.defs.hh (1.21),
	  src/Matrix.inlines.hh (1.19), src/PolyBase.defs.hh (1.3),
	  src/PolyBase.inlines.hh (1.3), src/Row.defs.hh (1.36),
	  src/Row.inlines.hh (1.16), src/SatMatrix.defs.hh (1.16),
	  src/SatMatrix.inlines.hh (1.10), src/SatRow.defs.hh (1.12),
	  src/SatRow.inlines.hh (1.12): Added a specialization of the the
	  std:swap() function for LinExpression.  Solved several
	  documentation and stylistic issues concerning our specializations
	  of std::swap().

2002-03-27 Wednesday 08:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, PolyBase.cc (strict.[13,31]): Method
	  GenSys::relation_with(c) now supports all the possible
	  combinations of topology and type for both *this and the
	  constraint parameter c.

2002-03-27 Wednesday 08:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.14), src/Constraint.defs.hh (1.47), src/Generator.defs.hh
	  (1.51): Avoid using \enum when it is not strictly necessary.

2002-03-26 Tuesday 23:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in (1.14),
	  doc/devref-print.doxyconf-latex.in (1.14),
	  doc/devref.doxyconf-html.in (1.15),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.4), src/ConSys.cc (1.29),
	  src/ConSys.defs.hh (1.35), src/ConSys.inlines.hh (1.14),
	  src/Constraint.cc (1.20), src/Constraint.defs.hh (1.46),
	  src/Constraint.inlines.hh (1.22), src/GenSys.cc (1.43),
	  src/GenSys.defs.hh (1.50), src/GenSys.inlines.hh (1.15),
	  src/Generator.cc (1.24), src/Generator.defs.hh (1.50),
	  src/Generator.inlines.hh (1.23), src/LinExpression.cc (1.11),
	  src/LinExpression.defs.hh (1.29), src/LinExpression.inlines.hh
	  (1.13), src/Makefile.am (1.31), src/Matrix.cc (1.32),
	  src/Matrix.defs.hh (1.20), src/Matrix.inlines.hh (1.18),
	  src/NNC_Polyhedron.cc (1.2), src/NNC_Polyhedron.defs.hh (1.2),
	  src/NNC_Polyhedron.inlines.hh (1.2), src/NNC_Polyhedron.types.hh
	  (1.2), src/PolyBase.cc (1.2), src/PolyBase.defs.hh (1.2),
	  src/PolyBase.inlines.hh (1.2), src/PolyBase.types.hh (1.2),
	  src/Polyhedron.cc (1.144), src/Polyhedron.defs.hh (1.88),
	  src/Polyhedron.inlines.hh (1.18), src/Row.cc (1.32),
	  src/Row.defs.hh (1.35), src/Row.inlines.hh (1.15),
	  src/Topology.hh (1.2), src/conversion.cc (1.25), src/minimize.cc
	  (1.19), src/simplify.cc (1.14), tests/Makefile.am (1.51),
	  tests/exceptions2.cc (1.2), tests/relations9.cc (1.2): The
	  `strict' branch has been merged.

2002-03-26 Tuesday 21:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.13), ppl_c.h (1.14): Implemented the
	  error handling and reporting mechanisms.  Many other
	  improvements.

2002-03-26 Tuesday 19:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/minimize.cc (1.18): Throw `std::runtime_error' instead of
	  `std::invalid_argument'.  Removed the inclusion of two unneeded
	  header.

2002-03-26 Tuesday 18:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: Makefile.am (1.3), ppl_c.cc (1.12), ppl_c.h
	  (1.13): All the interface functions should be there now.

2002-03-26 Tuesday 17:54  Elisa Ricci

	* src/: GenSys.cc, Polyhedron.cc, Polyhedron.defs.hh, minimize.cc
	  (positive.[2,6,4,12]): Some changes in the part controlled by
	  "POSITIVE_TRANSFORMATION".

2002-03-26 Tuesday 17:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (strict.12): Some progresses in the generalization
	  of method GenSys::relation_with(c) to work with a NNC system of
	  generators.

2002-03-26 Tuesday 17:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.23): Refer to handles
	  rather than addresses.

2002-03-26 Tuesday 16:41  Elisa Ricci

	* tests/exceptions2.cc (strict.3): Added other two tests to show
	  when an exception is thrown.

2002-03-26 Tuesday 16:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/LinExpression.defs.hh (1.28): Friend declarations fixed.

2002-03-26 Tuesday 16:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Poly_Con_Relation.inlines.hh (strict.1): Bug (related to
	  operator precedence) corrected in method implies().

2002-03-26 Tuesday 14:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am, relations9.cc (strict.[2,1]): Test
	  relations9 calls method PolyBase::relation_with(c) when *this is
	  a necessarily closed polyhedron and c is a strict inequality.

2002-03-26 Tuesday 13:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, PolyBase.cc (strict.[11,30]): Methods
	  PolyBase::relation_with(c) and GenSys::relation_with(c) modified
	  to work as expected when *this.topology() == NECESSARILY_CLOSED
	  and the c.type() == STRICT_INEQUALITY.

2002-03-26 Tuesday 11:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, GenSys.cc, PolyBase.cc, PolyBase.defs.hh
	  (strict.[13,10,29,9]): Some cleaning in ConSys/GenSys methods
	  adjust_topology_and_dimension().  Adjusted a few comments and
	  removed a few FIXME and CHECKME notes.

2002-03-26 Tuesday 11:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.13): More things to do after the `strict' merge.

2002-03-26 Tuesday 11:05  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: GNU/ppl_gprolog.pl (1.3),
	  SICStus/ppl_sicstus.cc (1.45), YAP/ppl_yap.cc (1.3): Update so
	  that they are all consistent with each other and SWI

2002-03-25 Monday 21:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: NNC_Polyhedron.cc, NNC_Polyhedron.defs.hh,
	  PolyBase.defs.hh, Polyhedron.cc, Polyhedron.defs.hh
	  (strict.[3,3,8,4,4]): Added explicit constructors (to be used as
	  conversion functions) for building a Polyhedron starting from a
	  NNC_Polyhedron, and viceversa.  Added method	 bool
	  NNC_Polyhedron::is_topologucally_closed() used in the above
	  constructor to check if the argument is legal.
	  NNC_Polyhedron::limited_widening_assign() reimplemented using the
	  new constructor functions.

2002-03-25 Monday 21:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.28): Corrected a bug in the assignment
	  operator, which was not clearing matrices when a zero-dim
	  polyhedron was assigned.

2002-03-25 Monday 19:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.12): More things to do after the merge with the `strict'
	  branch.

2002-03-25 Monday 19:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.11), ppl_c.h (1.12): More interface
	  functions added.

2002-03-25 Monday 17:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.10), ppl_c.h (1.11): Widenings added.

2002-03-25 Monday 17:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: NNC_Polyhedron.cc, NNC_Polyhedron.defs.hh (strict.[2,2]):
	  Method limited_widening_assign() overridden in NNC_Polyhedron to
	  avoid an annoying problem when testing with china.

2002-03-25 Monday 17:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.27): When looping on constraints in
	  widening_assign(), now going upward so as to avoid reversing the
	  ordering of constraints.

2002-03-25 Monday 16:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.9), ppl_c.h (1.10): Added an interface
	  for the Polyhedron::relation_with() methods.

2002-03-25 Monday 16:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.12): Predicate
	  add_dimensions_and_constraints/2 added.

2002-03-25 Monday 16:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (strict.12): Trivially true constraints (such as 1
	  > 0, the eps_leq_one constraint) should not be considered by
	  method "has_strict_inequalities()".

2002-03-25 Monday 15:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Poly_Gen_Relation.defs.hh (1.4),
	  Poly_Gen_Relation.inlines.hh (1.5): Provide a hidden
	  Poly_Gen_Relation::get_flags() method for use by the foreign
	  language interfaces.

2002-03-25 Monday 15:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Poly_Con_Relation.defs.hh (1.4),
	  Poly_Con_Relation.inlines.hh (1.5): Provide a hidden
	  Poly_Con_Relation::get_flags() method for use by the foreign
	  language interfaces.

2002-03-25 Monday 15:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.143), Polyhedron.defs.hh (1.87): Both
	  Polyhedron::relation_with() methods were erroneously not declared
	  const.

2002-03-25 Monday 14:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.8), ppl_c.h (1.9): Added more
	  interface functions for ordinary polyhedra.

2002-03-24 Sunday 21:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.26): Coorected trivial bug in
	  check_universe().

2002-03-24 Sunday 20:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.7), ppl_c.h (1.8): All the
	  functionality provided by the C++ classes Constraint, ConSys,
	  Generator and GenSys is now available to the C user.

2002-03-24 Sunday 20:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.25): Method check_universe() is now
	  correct for NNC polyhedra.  Try to exploit the boolean value
	  returned by update_generators() to shorthen computations when
	  possible.

2002-03-24 Sunday 16:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PolyBase.cc, PolyBase.defs.hh (strict.[24,7]): Methods
	  obtain_sorted_constraints(), obtain_sorted_generators(),
	  obtain_sorted_constraints_with_sat_c(),
	  obtain_sorted_generators_with_sat_g() now declared const, since
	  they do not logically modify the polyhedron.	As a consequence,
	  simplified (by removing the const_cast's) the methods
	  constraints(), generators(), intersection_assign(),
	  convex_hull_assign(), convex_hull_assign_and_minimize().

2002-03-24 Sunday 15:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.6), ppl_c.h (1.7): Added all the
	  functions for the handling of generators and generators' systems.

2002-03-24 Sunday 10:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.23): Patched method convex_hull_assign().
	  The error (not correctly handling the sorting of gen_sys rows for
	  the parameter y) was NOT related to the changes done in the
	  strict branch.  Changed (detailed) doxygen comments for the
	  methods obtain_sorted_constraints() and
	  obtain_sorted_generators().

2002-03-23 Saturday 19:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.5), ppl_c.h (1.6): Finished the
	  implementation of const iterators for constraints.

2002-03-23 Saturday 14:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.13), configure.ac (1.36): Support C compilers that
	  do not support `const' and/or `inline'.

2002-03-23 Saturday 14:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: ppl_c.cc (1.4), ppl_c.h (1.5): Started interfacing
	  ConSys::const_iterator.

2002-03-23 Saturday 14:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/: Makefile.am (1.7), gp_clpq.pl (1.3),
	  ppl_gprolog.cc (1.9): The GNU Prolog interface is finally
	  operational.	The problem was that a GNU Prolog integer is not
	  wide enough to hold a memory address:  now memory addresses are
	  represented by terms of the form `[u1|u2]' where `u1' and `u2'
	  are GNU Prolog integers.

2002-03-23 Saturday 13:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/track_allocation.hh (1.3): This was always
	  commented out due to a typo.	Missing qualification added.

2002-03-22 Friday 20:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (strict.11): Method satisfies_all_constraints(g)
	  reimplemented to work with NNC polyhedra and to correctly deal
	  with potential (legal) topology mismatches.  As a consequence,
	  now PolyBase::relation_with(g) also works for NNC polyhedra
	  and/or an NNC generator parameter g.

2002-03-22 Friday 20:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.22): The inclusion operator<=
	  re-implemented:  - using the new scalaro product operator ^ when
	  appropriate;	- changed the order of the two nested loops to
	  factor out some    tests that were repeated unnecessarily.

2002-03-22 Friday 20:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Row.cc, Row.defs.hh (strict.[2,3]): Added the "strict"
	  scalar product operator (PPL::operator^) computing the scalar
	  product of two Row objects but ignoring the last coefficient of
	  the first row.

2002-03-22 Friday 15:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, GenSys.cc, PolyBase.cc (strict.[10,9,21]):
	  Metods GenSys::affine_image(v, e, d) and
	  ConSys::affine_preimage(v, e, d) no longer require the expression
	  `e' to have the _same_ number of columns of the matrix; now they
	  only require dimension compatibility.  This change, while
	  allowing a correct implementation for NNC topology matrices, also
	  turns out to be a potentially remarkable performance improvement.

	  The corresponding methods of PolyBase changed accordingly:  - no
	  longer performing the dangerous const_cast on the expression;  -
	  missing assertion OK(false) placed on exit.

2002-03-22 Friday 12:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.20): Cleaned the code trying to preserve
	  the sortedness of matrices when swapping epsilon columns in
	  methods add_dimensions*.  In operator<=, avoiding repeated tests
	  on the generator kind when computing the scalar products for NNC
	  polyhedra.

2002-03-22 Friday 10:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.19): Corrected a bug in
	  add_dimensions_and_constraint().  The OK() assertion at the end
	  of limited_widening_assign() changed into OK(false), because the
	  parameter cs may cause the polyhedron to become inconsistent. In
	  widening_assign(), now adding the epsilon constraints (instead of
	  the positivity one) when the topology requires them.

2002-03-21 Thursday 18:08  Elisa Ricci

	* src/: GenSys.cc, GenSys.defs.hh, Matrix.defs.hh, Polyhedron.cc,
	  Polyhedron.defs.hh, conversion.cc, minimize.cc
	  (positive.[1,1,2,5,3,6,11]): Started to implement the new method
	  that use a transformation to compute the system of constraints of
	  a positive polyhedron described by its system of generators: this
	  method is controlled by the flag "POSITIVE_TRANSFORMATION".

2002-03-21 Thursday 16:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.18): Corrected a bug in the constructor
	  PolyBase(t, gs): we were breaking the correctenss of the
	  sortedness flag.

2002-03-21 Thursday 16:03  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.17): Added missing OK(bool) assertions on
	  exit of constructors and methos operator<=,
	  intersection_assign(ph), convex_difference_assign(ph), insert(g),
	  insert(c), add_dimensions_and_constraints(),
	  add_generators_and_minimize().

	  Corrected \epsilon-swapping bugs in methods add_dimensions(...),
	  add_dimensions_and_project(), add_dimensions_and_embed() and
	  add_dimensions_and_constraints().

	  Patched topology-related bug in limited_widening_assign().

2002-03-21 Thursday 15:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, GenSys.cc (strict.[9,8]): Methods get() and
	  print(), i.e., input/output operators >> and <<, now also handle
	  topology information.

2002-03-21 Thursday 10:22  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.22): Added a note to
	  try and explain when the _and_minimize predicates should be used.

2002-03-21 Thursday 09:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.21): Two bugs corrected
	  in the description of the "relation_with" predicates.

2002-03-20 Wednesday 19:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.16): Patched methods
	  add_dimensions_and_embed(), add_dimensions_and_project() and
	  add_dimensions() to properly handle the "sorted" flag of
	  matrices.  Corrected a small bug in
	  add_dimensions_and_constraints(), where we were trying to swap a
	  column with itself.

2002-03-20 Wednesday 17:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.15): In constructors for NNC polyhedra,
	  add the \epsilon constraint in the order that is likely to
	  preserve the sorted flag.

2002-03-20 Wednesday 17:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.inlines.hh, Generator.cc (strict.[5,3]): Just a
	  few spaces added for style.

2002-03-20 Wednesday 17:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (strict.8): Corrected a bug in
	  has_strict_inequalities() whereby we were returning "true" when
	  finding the epsilon_geq_zero() constraint.

2002-03-20 Wednesday 16:48  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.inlines.hh, PolyBase.cc (strict.[4,14]): A
	  strict inequality has a _negative_ \epsilon coefficient
	  (previously, we were testing for a _non-zero_ coefficient,
	  causing a bug in method operator<=(PolyBase&, PolyBase&).

2002-03-20 Wednesday 16:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.defs.hh (strict.6): Constructors of the base class
	  PolyBase are now protected, so that the user _has_ to create
	  objects of the derived classes Polyhedron and NNC_Polyhedron.

2002-03-20 Wednesday 15:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.13): Corrected a bug in operator<= for
	  the NNC case.

2002-03-20 Wednesday 14:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.12): Implemented operator<= for NNC
	  polyhedra.  Added a couple of missing assertions to
	  add_generators().

2002-03-20 Wednesday 13:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, GenSys.cc, Matrix.cc (strict.[7,7,8]): In
	  Matrix::OK(), restored the test checking that num_columns() == 0
	  whenever num_rows() == 0.  Added assertions to
	  ConSys::adjust_topology_and_dimension() and
	  GenSys::adjust_topology_and_dimension().

2002-03-20 Wednesday 12:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc, Matrix.defs.hh, Matrix.inlines.hh
	  (strict.[7,4,3]): Corrected bugs:  - set_necessarily_closed() and
	  set_non_necessarily_closed() now also    set the right topology
	  for all the rows in the matrix;  - grow(...) no longer asserts
	  OK() on exit, because it may leave	the matrix in a state where
	  num_rows() == 0 and num_columns() > 0;  - grow(...) was comparing
	  the first row to be added with the last row	 in the matrix even
	  when there were no rows in the matrix;  - insert(...) no longer
	  swaps a coefficient with itself when	  num_columns() and
	  row.size() do match.

2002-03-20 Wednesday 11:20  Elisa Ricci

	* tests/exceptions2.cc (strict.2): Added some other tests that show
	  when an exception is thrown: one of them shows that there is
	  still a problem with the function Matrix::grow().

2002-03-19 Tuesday 19:02  Elisa Ricci

	* tests/: Makefile.am, exceptions2.cc (strict.[1,1]): In
	  "exceptions2.cc" put two tests that show that an exception is
	  thrown if we want to built a Polyhedron starting from a system of
	  constraints that contains strict-inequalities or a a system of
	  generators that contains closure_points.

2002-03-19 Tuesday 18:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.11): The method OK() improved to check
	  invariants for both NC and NNC polyhedra.

2002-03-19 Tuesday 18:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (strict.6): One of the new tests added to OK() was
	  causing Matrix::grow() to fail.  Temporarily commented out.

2002-03-19 Tuesday 16:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (strict.6): Method OK() now merely calls
	  Matrix::OK(), since there are no other meaningful tests to
	  perform. Overriding used just for better documenting this fact.

2002-03-19 Tuesday 16:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (strict.5): In method OK(), added a check on
	  matrices with no rows.

2002-03-19 Tuesday 16:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (strict.6): In method OK(), no longer checking for
	  topology mismatches between the systems and its generators (this
	  is already done when calling Matrix::OK()).  No longer checking
	  for the existence of a point, because points are only required if
	  the GenSys is representing a polyhedron (check has to be
	  performed by PolyBase::OK()).

2002-03-19 Tuesday 15:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.cc (strict.4): Method OK() now checks for topology
	  mismatches between the matrix and its rows.  The check on the
	  minimum number of columns updated to work correctly with NNC
	  topology matrices.

2002-03-19 Tuesday 15:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc, Generator.inlines.hh (strict.[2,4]): Method
	  OK() updated to perform checks of invariants for generators
	  defined on the NNC topology.

2002-03-19 Tuesday 15:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.cc (strict.1): In method OK(), added a check on the
	  minimum number of coefficients of a row (the minimum depends on
	  the row topology).

2002-03-19 Tuesday 13:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (strict.5): In function OK(), when checking for the
	  existence of a point, we now use is_point() to (correctly)
	  disregard closure points.  Also checking for topology mismatches
	  between gen_sys and its elements.

2002-03-19 Tuesday 11:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.10): Exploiting the new explicit
	  conversions from Constraint/Generator to LinExpression in
	  PolyBase methods   - insert(const Constraint&)   - insert(const
	  Generator&)	- convex_difference_assign(const PolyBase&).

2002-03-19 Tuesday 11:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.cc (strict.2): Corrected a bug in the newly
	  introduced constructors.

2002-03-19 Tuesday 11:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.cc, LinExpression.defs.hh (strict.[1,1]):
	  Added explicit constructors taking a constraint/generator as
	  parameter: they are PPL_INTERNAL and extract from the parameter a
	  "necessarily closed" copy of the corresponding linear expression.

2002-03-19 Tuesday 01:09  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/devref-browse.doxyconf-latex.in,
	  doc/devref-print.doxyconf-latex.in, doc/devref.doxyconf-html.in,
	  src/Makefile.am (strict.[1,1,1,3]): Added files NNC_Polyhedron.*
	  and PolyBase_* to Makefile.am and to the INPUT_FILE flags for
	  doxygen devref configuration files.

2002-03-19 Tuesday 01:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.9): Consistency modification: all static
	  functions defined to just throw an exception now print the class
	  name of the invoking object (dirty kludge using the topology()
	  accessor; may be improved).  Added a whole set of such functions
	  for reporting topology clashes and illegal generator systems.
	  Adjusted several comments.  In method remove_dimensions, the case
	  when we remove _all_ dimensions captured earlier.  Provided a
	  temporary patches for the methods PolyBase::insert(const
	  Constraint&) and PolyBase::insert(const Generator&).	Added
	  topology-inconsistency checks to add_generators(gs).

2002-03-19 Tuesday 00:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.inlines.hh (strict.4): Methods reordered according
	  to Polyhedron.defs.hh.

2002-03-19 Tuesday 00:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.defs.hh (strict.5): Method topology() made public.

2002-03-19 Tuesday 00:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: NNC_Polyhedron.cc, NNC_Polyhedron.defs.hh,
	  NNC_Polyhedron.inlines.hh, NNC_Polyhedron.types.hh
	  (strict.[1,1,1,1]): Put under CVS control.

2002-03-19 Tuesday 00:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (strict.3): Removed useless include
	  directives (already included by PolyBase.defs.hh).

2002-03-19 Tuesday 00:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/minimize.cc (strict.2): In both minimize(...) methods,
	  modified the emptyness check after conversion in order to work
	  for NNC Polyhedra too.

2002-03-18 Monday 22:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/user-browse.doxyconf-latex.in (1.11),
	  doc/user-print.doxyconf-latex.in (1.11),
	  doc/user.doxyconf-html.in (1.13), interfaces/C/ppl_c.cc (1.3),
	  interfaces/C/ppl_c.h (1.4): Several improvements to the C
	  interface.

2002-03-18 Monday 17:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.17), doc/devref-browse.doxyconf-latex.in
	  (1.13), doc/devref-print.doxyconf-latex.in (1.13),
	  doc/devref.doxyconf-html.in (1.14),
	  doc/user-browse.doxyconf-latex.in (1.10),
	  doc/user-print.doxyconf-latex.in (1.10),
	  doc/user.doxyconf-html.in (1.12), interfaces/C/ppl_c.cc (1.2),
	  interfaces/C/ppl_c.h (1.3), src/LinExpression.defs.hh (1.27):
	  Started merging the new C interface.

2002-03-18 Monday 17:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.11): Another thing to remember.

2002-03-18 Monday 15:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.8): Corrected a (just introduced) bug in
	  add_dimensions_and_constraints(ConSys& cs).

2002-03-18 Monday 14:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.10): More things we should not forget to do.

2002-03-18 Monday 14:58  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.defs.hh, PolyBase.cc (strict.[4,7]): Patched method
	  PolyBase::add_generators_and_minimize(gs).

2002-03-18 Monday 14:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.6): Patched method
	  PolyBase::add_dimensions_and_constraints(cs).

2002-03-18 Monday 13:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.9): Things todo just after merging the `strict' branch.

2002-03-18 Monday 11:43  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.5): Adding topology-compatibility checks
	  where needed, throwing exceptions if necessary.  Consistently
	  using the methods [ConSys/GenSys]::adjust_topology_and_dimension
	  when building a new polyhedron (or augmenting an existing one)
	  starting from a ConSys or a GenSys.  When building an NNC
	  polyhedron using the constructor PolyBase(GenSys&), we now add a
	  closure point for each point in the GenSys.  Patched the
	  specification of convex_difference_assign() to work correctly for
	  NNC polyhedra.  Patched the methods add_dimensions_and_* and
	  remove*_dimensions() to work correctly for NNC polyhedra.  Added
	  a few "placeholder" exceptions to point out places where the
	  current implementation is still not correct.

2002-03-18 Monday 11:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.defs.hh (strict.4): In doxygen comments, added
	  specification for exceptions that should be thrown when
	  identifying a topology-incompatibility.

2002-03-18 Monday 11:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (strict.4): Using Matrix::swap_columns.  Corrected
	  a bug in GenSys::insert(g).

2002-03-18 Monday 11:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.defs.hh (strict.[5,3]): Method
	  contains_strict_inequalities() renamed as
	  has_strict_inequalities().  Using Matrix::swap_columns(i, j)
	  whene swapping the \epsilon coefficients after dimension changes.

2002-03-18 Monday 11:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc, Matrix.defs.hh (strict.[3,3]): Added method
	  Matrix::swap_columns(size_t i, size_t j) to factorize the several
	  places where we swap the column of \epsilon coefficients.

2002-03-18 Monday 11:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.defs.hh, Generator.cc, Generator.inlines.hh
	  (strict.[2,1,3]): Implemented friend function closure_point(...)
	  returning a closure point.  Added static method
	  zero_dim_closure_point().

2002-03-17 Sunday 14:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc, GenSys.defs.hh (strict.[3,3]): Added methods
	  adjust_topology_and_dimensions(), has_closure_points() and
	  has_points() to help checking for legality and automatically
	  adjusting generator systems when building polyhedra.

2002-03-17 Sunday 14:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (strict.4): Optimized the method
	  contains_strict_inequalities() by factoring out the topology
	  tests.

2002-03-17 Sunday 11:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/YAP/: Makefile.am (1.4), ppl_yap.cc (1.2),
	  ppl_yap.pl (1.2): Slow and difficult progress on the YAP
	  interface.

2002-03-17 Sunday 11:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: definitions.dox (1.42), ppl.sty (1.6): Introcude the macro
	  \cone.  Fix the macro \linspace.  Define commands using the
	  \{new,renew,provide}command* form.

2002-03-17 Sunday 11:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.35): Configuration for producing dlopen modules
	  and WIN32 dlls.

2002-03-17 Sunday 08:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (strict.3): Add missing `inline'
	  qualifiers.

2002-03-17 Sunday 00:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: PolyBase.cc, PolyBase.defs.hh, PolyBase.inlines.hh
	  (strict.[4,3,3]): The Topology parameter is now the first one in
	  constructors.  Added the missing topology consistency assertion
	  to limited_widening_assign.  Using the static Constraint members
	  for adding the positivity and epsilon related constraints in the
	  constructors.  Constructor PolyBase(Topology, ConSys) now
	  automatically adjust the constraint system according to the first
	  parameter, throwing an exception if we try to insert a strict
	  inequality into a Polyhedron.

2002-03-17 Sunday 00:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc, Polyhedron.defs.hh, Polyhedron.inlines.hh
	  (strict.[3,2,2]): Added the assignment operator. All methods are
	  now inlined.

2002-03-17 Sunday 00:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.defs.hh, GenSys.inlines.hh (strict.[2,3]): The
	  Topology parameter is now the first one in constructors.

2002-03-17 Sunday 00:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.defs.hh, ConSys.inlines.hh
	  (strict.[3,2,3]): Added methods adjust_topology_and_dimensions()
	  and contains_strict_inequality() to help checking for legality
	  and automatically adjusting constraint systems when building
	  polyhedra.  Now the Topology parameter is the first one in
	  constructors.

2002-03-17 Sunday 00:19  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc, Constraint.defs.hh, Constraint.inlines.hh
	  (strict.[3,2,3]): Added static methods to produce the two
	  (zero-dim) epsilon constraints replacing the positivity
	  constraint in NNC polyhedra (0 \leq \epsilon \leq 1).  Methods
	  is_trivial_true() and is_trivial_false() modified to also work
	  for strict inequalities.

2002-03-16 Saturday 13:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.defs.hh, ConSys.inlines.hh,
	  Constraint.cc, Constraint.inlines.hh, GenSys.cc, GenSys.defs.hh,
	  GenSys.inlines.hh, Generator.inlines.hh, Makefile.am, Matrix.cc,
	  Matrix.defs.hh, Matrix.inlines.hh, PolyBase.cc, PolyBase.defs.hh,
	  PolyBase.inlines.hh, Polyhedron.cc, Row.defs.hh, Row.inlines.hh,
	  conversion.cc (strict.[2,1,2,2,2,2,1,2,2,2,2,2,2,3,2,2,2,2,3,3]):
	  In constructors, now using an element of the enum Topology in
	  order to control the kind of object created (instead of the
	  previous boolean).  Started adding controls on Topology
	  mismatches and automatic conversions of objects when needed.

2002-03-16 Saturday 13:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Topology.hh (strict.1): Put under CVS control: new header
	  file for the enumeration controlling the topological kind of Row,
	  Matrix, Constraint, Generator, ConSys, GenSys and PolyBase
	  objects.

2002-03-15 Friday 11:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.inlines.hh (strict.2): Re-ordering the initializer in Row
	  constrauctors to avoid the warnings.

2002-03-15 Friday 10:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc, ConSys.inlines.hh, Constraint.cc,
	  Constraint.defs.hh, Constraint.inlines.hh, GenSys.cc,
	  GenSys.inlines.hh, Generator.defs.hh, Generator.inlines.hh,
	  LinExpression.inlines.hh, Matrix.cc, Matrix.defs.hh,
	  Matrix.inlines.hh, Row.defs.hh, Row.inlines.hh, conversion.cc
	  (strict.[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2]): Removed enumeration
	  Type from class Row: added enumerations PolyhedronKind and
	  RowKind; they are merged into a single object using new class
	  Row::Type.  Rows now rememberif they have or not the \epsilon
	  coefficient.

	  Constructors for Matrix now have a boolean flag indicating
	  whether or not the matrix has the \epsilon coefficient. The flag
	  is remembered in order to correctly set the type of new rows.

	  Added support for creating constraints that are strict
	  inequalities and generators that are closure points. Added
	  support for adding these two new kind of objects to constraint
	  systems and generator systems (with automatic detection and
	  resizing if needed).

	  Constraints, generators and the respective systems
	  space-dimensions now depend on the Polyhedron kind of the
	  corresponding rows.

2002-03-15 Friday 08:55  Elisa Ricci

	* doc/definitions.dox (1.41): Improved the proposition that is
	  before the definition of the ray space: we were using an object
	  that was not defined before.

2002-03-14 Thursday 15:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.20): Draft descriptions
	  for all the new predicates added.  A few other small improvements
	  made.

2002-03-14 Thursday 13:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.21): Improved
	  ppl_affine_image and ppl_affine_preimage.

2002-03-14 Thursday 12:22  Elisa Ricci

	* doc/definitions.dox (1.40): Improved the definition of minimal
	  proper face.

2002-03-14 Thursday 10:56  Elisa Ricci

	* doc/definitions.dox (1.39): Corrected two errors in the
	  definition of minimal proper face: I have written "C" instead of
	  "P".

2002-03-14 Thursday 09:21  Elisa Ricci

	* doc/definitions.dox (1.38): Improved the documentation about the
	  faces of a polyhedron.

2002-03-13 Wednesday 21:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.50), relations9.cc (1.1): New test.

2002-03-13 Wednesday 20:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.20),
	  interfaces/Prolog/GNU/ppl_gprolog.pl (1.2),
	  interfaces/Prolog/SICStus/ppl_sicstus.cc (1.44),
	  interfaces/Prolog/SWI/ppl_swiprolog.cc (1.11),
	  src/Poly_Con_Relation.defs.hh (1.3),
	  src/Poly_Con_Relation.inlines.hh (1.4),
	  src/Poly_Gen_Relation.defs.hh (1.3),
	  src/Poly_Gen_Relation.inlines.hh (1.4):
	  Poly_Con_Relation::implies() and Poly_Gen_Relation::implies()
	  were wrong because of missing parentheses.
	  Poly_Con_Relation::operator!() and Poly_Gen_Relation::operator!()
	  were ill-designed: removed.  Added Poly_Con_Relation
	  operator-(const Poly_Con_Relation& x, const Poly_Con_Relation& y)
	  and the similar operator dealing with Poly_Gen_Relation.  Prolog
	  interface functions ppl_relation_with_constraint/2 and
	  ppl_relation_with_generator/2 changed accordingly.  New Prolog
	  interface functions made available to GNU, SICStus, and SWI
	  Prolog.

2002-03-13 Wednesday 18:28  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.19): ppl_affine_image
	  and ppl_affine_preimage corrected and
	  ppl_add_domensions_and_constraints added.

2002-03-13 Wednesday 17:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/PolyBase.cc (strict.2): When constructing a PolyBase, now we
	  store the value of the newly introduced boolean flag in the
	  corresponding private member.

2002-03-13 Wednesday 17:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Makefile.am, PolyBase.cc, PolyBase.defs.hh,
	  PolyBase.inlines.hh, PolyBase.types.hh, Polyhedron.cc,
	  Polyhedron.defs.hh, Polyhedron.inlines.hh, conversion.cc,
	  minimize.cc, simplify.cc (strict.[1,1,1,1,1,1,1,1,1,1,1]): Class
	  Polyhedron renamed into PolyBase.  Added a private boolean flag
	  "necessarily_closed_" and modified all constructors (but not the
	  copy constructor) to also accept a boolean argument (which is
	  ignored, for the moment).  Created a new class Polyhedron
	  inheriting public-ly from PolyBase.  This will be the class
	  defining "necessarily closed" polyhedra.

2002-03-13 Wednesday 16:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.18):
	  ppl_relation_with_constraint/3 and ppl_relation_with_generator/3
	  added.

2002-03-13 Wednesday 16:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Poly_Con_Relation.defs.hh (1.2),
	  Poly_Con_Relation.inlines.hh (1.3), Poly_Gen_Relation.defs.hh
	  (1.2), Poly_Gen_Relation.inlines.hh (1.3): The implies() methods
	  were not qualified as const.	Poly_Con_Relation::operator!() and
	  Poly_Gen_Relation::operator!() added.

2002-03-13 Wednesday 16:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.17),
	  SWI/ppl_swiprolog.cc (1.10): ppl_affine_image and
	  ppl_affine_preimage added.

2002-03-13 Wednesday 14:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.43): Misspelled
	  functions fixed.  ppl_polyhedron_strictly_included/2 added.

2002-03-13 Wednesday 14:02  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.16): Definitions of
	  equal, included_or_equal and strictly_included predicates
	  corrected.

2002-03-13 Wednesday 11:56  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.15),
	  SWI/ppl_swiprolog.cc (1.9): Some corrections to some of the new
	  predicates definitions.

2002-03-13 Wednesday 07:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.10): Always build `pplpl'
	  and `pl_clpq'.

2002-03-13 Wednesday 07:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.14): Added new atoms
	  for the relations of polyhedra with constraints and generators.

2002-03-13 Wednesday 07:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.42): Missing
	  semicolons added.

2002-03-12 Tuesday 20:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.41): Macro SP_STUB_3
	  added and used for ppl_limited_widening_assign/3.

2002-03-12 Tuesday 19:46  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.13),
	  SICStus/ppl_sicstus.cc (1.40), SWI/ppl_swiprolog.cc (1.8): <=,
	  ==, and < added as ppl predicates.  SWI and SICStus interfaces
	  updated with <= and == predicates.

2002-03-12 Tuesday 19:08  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.12),
	  SICStus/ppl_sicstus.cc (1.39), SWI/ppl_swiprolog.cc (1.7): Added
	  ppl_add_generators_and_minimize, ppl_check_universe, and
	  ppl_is_bounded.  SICStus and SWI updated to use the new
	  predicates.

2002-03-12 Tuesday 18:57  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.11):
	  ppl_add_generators_and_minimize added.

2002-03-12 Tuesday 17:50  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.19): Restored comment
	  for ppl_copy_polyhedron, small change to notation and added draft
	  documentation for three predicates that were missing.

2002-03-12 Tuesday 17:06  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/ppl_prolog.outlines.hh (1.10): Code for
	  ppl_limited_widening_assign, ppl_relation_with_constraint and
	  ppl_relation_with_generator added.

2002-03-12 Tuesday 15:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.18): Added a note on the change of terminology
	  vertex/point.

2002-03-12 Tuesday 15:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.9),
	  Ciao/ppl_ciao.cc (1.3): Using "point" instead of "vertex".

2002-03-12 Tuesday 15:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: addconstraints9.cc (1.5), adddimensions1.cc (1.6),
	  adddimensions3.cc (1.4), addgenerators1.cc (1.5),
	  addgenerators2.cc (1.5), addgenerators3.cc (1.4),
	  addgenerators4.cc (1.4), addgenerators5.cc (1.4),
	  addgenerators6.cc (1.4), affineimage1.cc (1.4),
	  affinepreimage1.cc (1.4), affinepreimage3.cc (1.3),
	  affinepreimage4.cc (1.4), affinetrans.cc (1.8),
	  convexdifference1.cc (1.8), convexhull1.cc (1.5), convexhull2.cc
	  (1.4), convexhull3.cc (1.3), error1.cc (1.8), error10.cc (1.2),
	  error11.cc (1.2), error12.cc (1.2), error13.cc (1.2), error14.cc
	  (1.2), error15.cc (1.2), error16.cc (1.2), error17.cc (1.2),
	  error18.cc (1.3), error19.cc (1.2), error2.cc (1.10), error20.cc
	  (1.3), error21.cc (1.4), error22.cc (1.3), error23.cc (1.2),
	  error24.cc (1.2), error25.cc (1.4), error26.cc (1.3), error27.cc
	  (1.3), error28.cc (1.3), error29.cc (1.3), error3.cc (1.10),
	  error4.cc (1.5), error5.cc (1.6), error6.cc (1.4), error7.cc
	  (1.3), error8.cc (1.2), error9.cc (1.3), exceptions1.cc (1.2),
	  generators1.cc (1.4), inters2.cc (1.11), inters5.cc (1.5),
	  inters6.cc (1.4), onepoint.cc (1.3), randchull1.cc (1.11),
	  relations2.cc (1.3), relations3.cc (1.3), relations4.cc (1.3),
	  relations5.cc (1.3), removedim1.cc (1.4), removedim2.cc (1.8),
	  removedim4.cc (1.5): In all the tests, now using "point" instead
	  of "vertex".	Removed the old tests "errorN.cc", which are now
	  all subsumed by the single test "exceptions1.cc".

2002-03-12 Tuesday 15:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.28), Constraint.defs.hh (1.45),
	  Constraint.inlines.hh (1.21), GenSys.cc (1.42), GenSys.defs.hh
	  (1.49), GenSys.inlines.hh (1.14), Generator.cc (1.23),
	  Generator.defs.hh (1.49), Generator.inlines.hh (1.22),
	  LinExpression.defs.hh (1.26), Matrix.cc (1.31), Polyhedron.cc
	  (1.142), Polyhedron.defs.hh (1.86), Row.cc (1.31), Row.defs.hh
	  (1.34), Row.inlines.hh (1.14), conversion.cc (1.24), minimize.cc
	  (1.17), simplify.cc (1.13): The term "vertex" replaced almost
	  everywhere by "point": this is because these kind of generators
	  are not necessarily vertices of the polyhedron.  All comments
	  adjusted accordingly.

2002-03-12 Tuesday 15:02  Elisa Ricci

	* src/minimize.cc (positive.10): Some changes in the part
	  controlled by the flag " POS_SIMPLEX_TRICK".

2002-03-12 Tuesday 14:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.18): Description of
	  some of the Prolog predicates improved.

2002-03-12 Tuesday 13:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.141): Do not use the amsmath's \text{} macro
	  in contexts like $a_\text{var}$.  Use $a_\mathrm{var}$ instead.

2002-03-12 Tuesday 12:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.30): Do not use the `-e' option of GNU grep
	  (this solves a portability problem on Solaris).

2002-03-12 Tuesday 11:44  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.44), Generator.defs.hh (1.48),
	  Generator.inlines.hh (1.21): The method Constraint::type() and
	  the corresponding enum Constraint::Type are now public.  Added
	  new public type tests to Generator, is_ray() and is_vertex();
	  also, the existing method is_line() is now public.

2002-03-12 Tuesday 11:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc (1.22), Generator.defs.hh (1.47),
	  Generator.inlines.hh (1.20): We were still throwing an exception
	  from the inlined method divisor(); added a non-inline function
	  for that purpose.

2002-03-12 Tuesday 11:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/Makefile.am (1.6), SWI/Makefile.am (1.9),
	  YAP/Makefile.am (1.3): More packaging glitches have been fixed.

2002-03-12 Tuesday 09:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.7), GNU/Makefile.am (1.5),
	  SICStus/Makefile.am (1.15), SWI/Makefile.am (1.8),
	  YAP/Makefile.am (1.2): A first go at fixing the packaging
	  problems.

2002-03-11 Monday 19:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.17), src/Polyhedron.defs.hh (1.85): Visibility bug fixed:
	  Polyhedron::is_empty() must be private.

2002-03-11 Monday 18:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.17): Fixed a severe performance bug
	  in operator<(const Polyhedron& x, const Polyhedron& y).

2002-03-11 Monday 14:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.34), Constraint.defs.hh (1.43),
	  GenSys.defs.hh (1.48), Generator.defs.hh (1.46), Matrix.defs.hh
	  (1.19), Row.defs.hh (1.33): Added a few missing doxygen comments
	  to avoid warnings.

2002-03-11 Monday 14:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Matrix.inlines.hh (1.17): Fixed a \relates doxygen comment
	  pointing to the wrong class.

2002-03-11 Monday 14:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Variable.defs.hh (1.15): Removed a redundant namespace
	  qualification.

2002-03-11 Monday 14:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.12),
	  devref-print.doxyconf-latex.in (1.12), devref.doxyconf-html.in
	  (1.13): Set the WARN_IF_UNDOCUMENTED flag to YES. This will have
	  no effect until we will set EXTRACT_ALL to NO.  Added the
	  *.types.hh files to the INPUT variable.

2002-03-11 Monday 14:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.17): Documentation
	  describing the PPL Prolog predicates revised.

2002-03-11 Monday 12:22  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.16): Documentation for
	  ppl_copy_polyhedron corrected.

2002-03-11 Monday 12:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: clpq.pl (1.4), clpq2.pl (1.3): Now consulting
	  'file' will try also 'file.pl' in case 'file' does not exist or
	  is not readable.

2002-03-11 Monday 01:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.19), Constraint.defs.hh (1.42),
	  Generator.cc (1.21), Generator.defs.hh (1.45), Matrix.cc (1.30),
	  Matrix.defs.hh (1.18), Matrix.inlines.hh (1.16), Polyhedron.cc
	  (1.140), Polyhedron.defs.hh (1.84), Row.cc (1.30), Row.defs.hh
	  (1.32), Row.inlines.hh (1.13), SatMatrix.cc (1.14),
	  SatMatrix.defs.hh (1.15), SatRow.cc (1.7), SatRow.defs.hh (1.11),
	  SatRow.inlines.hh (1.11), Status.cc (1.11), Status.defs.hh
	  (1.14), Variable.cc (1.6), Variable.defs.hh (1.14),
	  Variable.inlines.hh (1.8): Placing the doxygen \relates command
	  before function definitions (instead of declarations) to avoid
	  warnings for unmatched functions.

2002-03-11 Monday 00:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.11),
	  devref-print.doxyconf-latex.in (1.11), devref.doxyconf-html.in
	  (1.12): Added the newer (and old ones too) source files to the
	  INPUT tag.  Turned on the STRIP_CODE_COMMENTS flag, to avoid
	  outputting dosygen comments in the devref detailed comments for
	  enumerations (e.g., Generator::Type).

2002-03-10 Sunday 21:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.27), LinExpression.defs.hh (1.25),
	  Polyhedron.cc (1.139): Just formatting.

2002-03-10 Sunday 21:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.29), Row.defs.hh (1.31): Avoid the creation of
	  temporaries in operator*(const Row& x, const Row& y).  This
	  results in a speedup of at least 3%.

2002-03-10 Sunday 16:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.26), GenSys.cc (1.41): Missing full-stops
	  added.

2002-03-10 Sunday 16:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.25), GenSys.cc (1.40):
	  ConSys::affine_preimage() and GenSys::affine_image() shortened
	  and slightly optimized.  Moreover, each contained a wrong
	  assertion.

2002-03-10 Sunday 15:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.cc (1.24): Avoid a useless temporary in
	  ConSys::affine_preimage().

2002-03-10 Sunday 14:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.23), ConSys.defs.hh (1.33), ConSys.inlines.hh
	  (1.13), Constraint.defs.hh (1.41), Constraint.inlines.hh (1.20),
	  GenSys.cc (1.39), GenSys.defs.hh (1.47), GenSys.inlines.hh
	  (1.13), LinExpression.defs.hh (1.24), LinExpression.inlines.hh
	  (1.12), Matrix.cc (1.29), Matrix.defs.hh (1.17), Polyhedron.cc
	  (1.138), Row.defs.hh (1.30), Row.inlines.hh (1.12), SatMatrix.cc
	  (1.13), SatMatrix.defs.hh (1.14), SatMatrix.inlines.hh (1.9),
	  Variable.defs.hh (1.13), Variable.inlines.hh (1.7): Compile
	  cleanly with gcc's -Wshadow.

2002-03-10 Sunday 13:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.34): The configure options --with-cflags and
	  --with-cxxflags now add more compiler options (as opposed to
	  replace them).  In addition the --with-cflags options was simply
	  broken.

2002-03-10 Sunday 13:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swiprolog.cc (1.6): Assertion fixed.

2002-03-10 Sunday 00:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.18), Generator.cc (1.20): Useless
	  namespace qualification in argument was causing a doxygen
	  warning.

2002-03-10 Sunday 00:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.10),
	  devref-print.doxyconf-latex.in (1.10), devref.doxyconf-html.in
	  (1.11), user-browse.doxyconf-latex.in (1.9),
	  user-print.doxyconf-latex.in (1.9), user.doxyconf-html.in (1.11):
	  New configuration files obtained by using the -u options of
	  doxygen 1.2.14 and a bit of manual editing.

2002-03-09 Saturday 19:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/C/: Makefile.am (1.2), ppl_c.c (1.2), ppl_c.cc (1.1),
	  ppl_c.h (1.2): Slow progress.  The C interface is implemented in
	  C++ (of course).

2002-03-09 Saturday 13:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.33), interfaces/Makefile.am (1.4),
	  interfaces/C/.cvsignore (1.1), interfaces/C/Makefile.am (1.1),
	  interfaces/C/ppl_c.c (1.1), interfaces/C/ppl_c.h (1.1): C
	  interface started.

2002-03-08 Friday 22:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.8): More things to do.

2002-03-08 Friday 12:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.32): The SICStus Prolog interface is only built
	  if the user has SICStus Prolog 3.9.0 or a later version.

2002-03-08 Friday 11:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/ppl_gprolog.cc (1.8),
	  SICStus/ppl_sicstus.cc (1.38), SWI/ppl_swiprolog.cc (1.5): Minor
	  improvements.

2002-03-08 Friday 11:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.31), interfaces/Prolog/YAP/.cvsignore (1.1),
	  interfaces/Prolog/YAP/Makefile.am (1.1),
	  interfaces/Prolog/YAP/ppl_yap.cc (1.1),
	  interfaces/Prolog/YAP/ppl_yap.pl (1.1),
	  interfaces/Prolog/YAP/yap_clpq.pl (1.1): YAP Prolog interface
	  started.

2002-03-08 Friday 10:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: relations1.cc (1.2), relations2.cc (1.2), relations3.cc
	  (1.2), relations4.cc (1.2), relations5.cc (1.2), relations6.cc
	  (1.2), relations7.cc (1.2), relations8.cc (1.2): Tests updated to
	  correctly use the new classes Poly_Con_Relation and
	  Poly_Gen_Relation.

2002-03-08 Friday 10:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.38), GenSys.defs.hh (1.46), Polyhedron.cc
	  (1.137), Polyhedron.defs.hh (1.83): Methods relation_with(...)
	  updated to correctly use the new classes Poly_Con_Relation and
	  Poly_Gen_Relation.

2002-03-08 Friday 10:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.32), ConSys.inlines.hh (1.12),
	  Constraint.cc (1.17), Constraint.defs.hh (1.40),
	  Constraint.inlines.hh (1.19), GenSys.defs.hh (1.45),
	  GenSys.inlines.hh (1.12), Generator.cc (1.19), Generator.defs.hh
	  (1.44), LinExpression.cc (1.10), LinExpression.defs.hh (1.23),
	  LinExpression.inlines.hh (1.11), Matrix.cc (1.28), Matrix.defs.hh
	  (1.16), Matrix.inlines.hh (1.15), Poly_Con_Relation.cc (1.2),
	  Poly_Gen_Relation.cc (1.2), Polyhedron.cc (1.136),
	  Polyhedron.defs.hh (1.82), Polyhedron.inlines.hh (1.16), Row.cc
	  (1.28), Row.defs.hh (1.29), Row.inlines.hh (1.11), SatMatrix.cc
	  (1.12), SatMatrix.defs.hh (1.13), SatMatrix.inlines.hh (1.8),
	  SatRow.cc (1.6), SatRow.defs.hh (1.10), SatRow.inlines.hh (1.10),
	  Status.cc (1.10), Status.defs.hh (1.13), Status.inlines.hh (1.7),
	  Variable.cc (1.5), Variable.defs.hh (1.12), Variable.inlines.hh
	  (1.6): For each operator name @ different from `new' and
	  `delete', the syntax `operator@()' has to be preferred to
	  `operator @'.

2002-03-08 Friday 10:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Poly_Con_Relation.inlines.hh (1.2),
	  Poly_Gen_Relation.inlines.hh (1.2): Add missing `inline'
	  qualifiers.

2002-03-08 Friday 10:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.37), GenSys.defs.hh (1.44), Makefile.am
	  (1.29), Poly_Con_Relation.cc (1.1), Poly_Con_Relation.defs.hh
	  (1.1), Poly_Con_Relation.inlines.hh (1.1),
	  Poly_Con_Relation.types.hh (1.1), Poly_Gen_Relation.cc (1.1),
	  Poly_Gen_Relation.defs.hh (1.1), Poly_Gen_Relation.inlines.hh
	  (1.1), Poly_Gen_Relation.types.hh (1.1), Polyhedron.cc (1.135),
	  Polyhedron.defs.hh (1.81), relations.cc (1.2), relations.hh
	  (1.3): New classes for polyhedron/constraint and
	  polyhedron/generator relations.

2002-03-08 Friday 09:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Status.defs.hh (1.12), Status.inlines.hh (1.6): Only
	  esthetics.

2002-03-07 Thursday 19:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/Makefile.am (1.4), GNU/gp_clpq.pl (1.2),
	  GNU/ppl_gprolog.cc (1.7), SWI/Makefile.am (1.7): GNU Prolog
	  CLP(Q) interpreter almost working (the ack.clpq test provokes a
	  segmentation fault though).

2002-03-07 Thursday 16:35  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.37): First part of Section 1.2 -
	  Homogeneous Systems of the developer's manual, revised.

2002-03-07 Thursday 14:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.7): Started adding the list of minor things to do.

2002-03-07 Thursday 12:48  Elisa Ricci

	* tests/: Makefile.am (1.49), includes1.cc (1.7), includes2.cc
	  (1.6), includes3.cc (1.6), includes4.cc (1.6), relations1.cc
	  (1.1), relations2.cc (1.1), relations3.cc (1.1), relations4.cc
	  (1.1), relations5.cc (1.1), relations6.cc (1.1), relations7.cc
	  (1.1), relations8.cc (1.1), satisfies1.cc (1.8), satisfies2.cc
	  (1.6), satisfies3.cc (1.7), satisfies4.cc (1.5): The tests
	  includes1, includes2, includes3, includes4 are now renamed
	  relations1, relations2, relations3, relations4 and the tests
	  satisfies1, satisfies2,satisfies3, satisfies4 are renamed
	  relations5, relations6, relations7, relations8.

2002-03-07 Thursday 12:24  Elisa Ricci

	* tests/: Makefile.am (1.48), exceptions1.cc (1.1): All the tests
	  for the exceptions are now put in this file.

2002-03-07 Thursday 12:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: check_script (1.2), clpq.pl (1.3),
	  SICStus/sp_clpq.pl (1.2), SWI/Makefile.am (1.6), SWI/pl_clpq.cc
	  (1.1), SWI/pl_clpq.pl (1.2): The CLP(Q) interpreter now behaves
	  the same under SICStus and SWI-Prolog.  The two version now
	  implement the same `make check' procedure.

2002-03-07 Thursday 11:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.16): Corrected a cut&paste error and added a note on the
	  bug fixed in Polyhedron::add_constraints().

2002-03-07 Thursday 11:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.8),
	  GNU/ppl_gprolog.cc (1.6), SICStus/ppl_sicstus.cc (1.37),
	  SWI/Makefile.am (1.5), SWI/ppl_swiprolog.cc (1.4): Use the names
	  Prolog_is_cons and Prolog_get_cons instead of the ambiguous
	  Prolog_is_list and Prolog_get_list.  Bugs fixed.  The CLP(Q)
	  interpreter now works also under SWI-Prolog.

2002-03-07 Thursday 11:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.36): Adjusted a few comments in
	  GenSys::relation_with(c). Also avoided using the boolean variable
	  first_vertex_or_nonsaturating_ray when c is an equality
	  constraint.

2002-03-07 Thursday 10:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.35), tests/satisfies4.cc (1.4): Method
	  Polyhedron::relation_with(c) corrected to work as expected when c
	  is an equality. Test satisfies4, modified to test for the right
	  thing, now is correctly handled.

2002-03-07 Thursday 08:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.134): "steel" corrected to "steal".

2002-03-06 Wednesday 19:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.6), check_script (1.1),
	  clpq.pl (1.2), clpq2.pl (1.2), expected (1.1), GNU/Makefile.am
	  (1.3), GNU/gp_clpq.pl (1.1), GNU/ppl_gprolog.cc (1.5),
	  SICStus/Makefile.am (1.14), SICStus/check_script (1.2),
	  SICStus/expected (1.5), SWI/Makefile.am (1.4), SWI/pl_clpq.pl
	  (1.1): Slow progress on the unified Prolog interfaces.

2002-03-06 Wednesday 19:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.80), tests/error21.cc (1.3),
	  tests/error22.cc (1.2), tests/includes1.cc (1.6),
	  tests/includes2.cc (1.5), tests/includes3.cc (1.5),
	  tests/includes4.cc (1.5): Small fix in a comment of
	  Polyhedron.defs.hh.  Modified a few tests to let them compile
	  after the API changes.

2002-03-06 Wednesday 15:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* NEWS (1.15), src/relations.hh (1.2): Small change in a comment to
	  enum Relation_Poly_Con.  Added to NEWS information about the
	  replacement of includes() and satisfies() by methods
	  relation_with().

2002-03-06 Wednesday 15:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.34), src/GenSys.defs.hh (1.43), src/Makefile.am
	  (1.28), src/Polyhedron.cc (1.133), src/Polyhedron.defs.hh (1.79),
	  src/relations.cc (1.1), src/relations.hh (1.1),
	  tests/satisfies1.cc (1.7), tests/satisfies2.cc (1.5),
	  tests/satisfies3.cc (1.6), tests/satisfies4.cc (1.3): Put under
	  CVS control.

2002-03-06 Wednesday 15:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ack.clpq (1.1), ackn.clpq (1.1), clpq.pl
	  (1.1), clpq2.pl (1.1), fib.clpq (1.1), mc91.clpq (1.1),
	  ppl_prolog.pl (1.1), smm.clpq (1.1), smmdiff.clpq (1.1),
	  sumto.clpq (1.1), tak.clpq (1.1), SICStus/Makefile.am (1.13),
	  SICStus/ack.clpq (1.4), SICStus/ackn.clpq (1.2), SICStus/clpq.pl
	  (1.28), SICStus/clpq2.pl (1.4), SICStus/fib.clpq (1.3),
	  SICStus/mc91.clpq (1.2), SICStus/ppl_sicstus.pl (1.19),
	  SICStus/smm.clpq (1.2), SICStus/smmdiff.clpq (1.3),
	  SICStus/sp_clpq.pl (1.1), SICStus/sumto.clpq (1.2),
	  SICStus/tak.clpq (1.2): Share as much sources as possible among
	  all supported Prolog implementations.

2002-03-06 Wednesday 13:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.7),
	  track_allocation.hh (1.2), SICStus/ppl_sicstus.cc (1.36),
	  SICStus/ppl_sicstus.pl (1.18): GNU Prolog, SICStus Prolog and
	  SWI-Prolog interfaces now share most of the code.

2002-03-06 Wednesday 11:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.33): In GenSys::affine_image(), rays and lines
	  can be mapped into the origin only if the transformation is NOT
	  invertible.

2002-03-06 Wednesday 11:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.132): Invertible affine transformations
	  preserve both the minimality and the saturation relations of
	  constraints and generators.

2002-03-06 Wednesday 08:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: exceptions.hh (1.3), ppl_prolog.outlines.hh
	  (1.6), track_allocation.hh (1.1), GNU/ppl_gprolog.cc (1.4),
	  SWI/ppl_swiprolog.cc (1.3): GNU Prolog interface fixed.  More
	  common code between the GNU Prolog and the SWI Prolog interfaces.
	  Allocation tracking implemented in a separate file.

2002-03-05 Tuesday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/ppl_gprolog.cc (1.3): Work around a couple
	  of bugs in GNU Prolog 1.2.8.

2002-03-05 Tuesday 19:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.32): Now GenSys::satisfy() correctly handles the
	  case when c is an equality.  Still have to check the case of c
	  being an inequality.

2002-03-05 Tuesday 16:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/satisfies4.cc (1.2): Corrected the test just inserted (and
	  set NOISY = 0).

2002-03-05 Tuesday 15:46  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.47), satisfies4.cc (1.1): The test
	  satisfies4 shows a bug whereby we return SOME_SATISFY even when
	  the considered equality constraint has an empty intersection with
	  the polyhedron.

2002-03-05 Tuesday 14:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.131): Corrected a bug in satisfies() for the
	  case when *this is a zero-dim univ.  polyhedron. Now the test
	  satisfies3 should pass.

2002-03-05 Tuesday 14:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/satisfies3.cc (1.5): Test satisfies3 modified to check all
	  the possibilities when calling Polyhedron::satisfies() on a
	  zero-dim-universe polyhedron.  The old test was meaningless,
	  since it was saying that the wrong result was ok. This new test
	  shows a bug that I am going to correct.

2002-03-05 Tuesday 12:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.39): A couple of spelling errors in
	  comments fixed.

2002-03-04 Monday 22:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.9),
	  devref-print.doxyconf-latex.in (1.9), devref.doxyconf-html.in
	  (1.10): Include the Prolog interfaces into the documentation for
	  developers.

2002-03-04 Monday 22:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: SICStus/ppl_sicstus.cc (1.35),
	  SWI/ppl_swiprolog.cc (1.2): Small improvements.

2002-03-04 Monday 22:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/GNU/: Makefile.am (1.2), ppl_gprolog.cc (1.2),
	  ppl_gprolog.pl (1.1): GNU Prolog interface almost complete.

2002-03-04 Monday 17:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/simplify.cc (1.12): Adjusted the comments in the part where
	  we check the independence rule for inequalities.

2002-03-04 Monday 17:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: GNU/.cvsignore (1.1), SWI/.cvsignore (1.1):
	  Put under CVS control.

2002-03-04 Monday 17:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.30), interfaces/Prolog/GNU/Makefile.am (1.1),
	  interfaces/Prolog/GNU/ppl_gprolog.cc (1.1): GNU Prolog interface
	  started.

2002-03-04 Monday 17:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.12), ppl_sicstus.cc
	  (1.34): Comment added.  Do not use the preprocessor to declare
	  constants.

2002-03-04 Monday 17:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/: Makefile.am (1.3), ppl_swi.cc (1.7),
	  ppl_swiprolog.cc (1.1): Renamed.

2002-03-04 Monday 17:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swi.cc (1.6): More interface functions
	  added.

2002-03-04 Monday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/Makefile.am (1.2), src/Makefile.am (1.27):
	  Comments fixed.

2002-03-04 Monday 16:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.8): Updated.

2002-03-04 Monday 15:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.29), interfaces/Prolog/exceptions.hh (1.2),
	  interfaces/Prolog/ppl_prolog.outlines.hh (1.5),
	  interfaces/Prolog/SICStus/ppl_sicstus.cc (1.33),
	  interfaces/Prolog/SICStus/ppl_sicstus.pl (1.17),
	  interfaces/Prolog/SWI/Makefile.am (1.1),
	  interfaces/Prolog/SWI/ppl_swi.cc (1.5),
	  interfaces/Prolog/SWI/pplpl.cc (1.1): SWI Prolog interface almost
	  complete.

2002-03-04 Monday 14:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.130): Since the Row::capacity() method is
	  accessible only during debugging, we no longer swap rows in
	  Polyhedron::add_constraints() (we always swap the coefficeints).

2002-03-03 Sunday 11:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: minimize.cc (1.16), simplify.cc (1.11): Started polishing
	  the comments, and also the code in a few places, for the function
	  simplify(). Adjusted a few comments in minimize(), regarding the
	  saturation matrix.

2002-03-02 Saturday 17:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/exceptions.hh (1.1): Exceptions to be used by
	  the Prolog interfaces.

2002-03-02 Saturday 17:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.4),
	  SICStus/ppl_sicstus.cc (1.32), SICStus/ppl_sicstus.pl (1.16),
	  SWI/ppl_swi.cc (1.4): Progress on the SWI and SICStus interfaces.
	  More error checking added.

2002-03-02 Saturday 14:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.3),
	  SICStus/ppl_sicstus.cc (1.31), SWI/ppl_swi.cc (1.3): SICStus and
	  SWI interfaces reconciled.

2002-03-02 Saturday 09:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.129): In add_constraints(), corrected a bug
	  whereby we were mixing constraints having different row's
	  capoacities into a single constraint system.

2002-03-02 Saturday 09:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/minimize.cc (1.15): Small change in a comment.

2002-03-02 Saturday 09:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.43): Added the right doxygen comments to
	  enumeration Generator::Type.	The special command
	  \hideinitializer allows to mask implementation details.

2002-03-02 Saturday 07:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: ppl_prolog.outlines.hh (1.2),
	  SICStus/ppl_sicstus.cc (1.30), SWI/ppl_swi.cc (1.2): Some
	  progress on the combined SICStus/SWI interface.

2002-03-01 Friday 16:55  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.defs.hh (1.78), minimize.cc (1.14): Polished the
	  function add_and_minimize(...).  No longer using variable
	  `index', which was useless.  Some style changes to made the code
	  more uniform wrt what is done in function minimize(...). Also,
	  con_to_ray renamed into con_to_gen.

2002-03-01 Friday 16:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SWI/ppl_swi.cc (1.1): This will become the
	  SWI-Prolog stub.

2002-03-01 Friday 15:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.29): Use
	  ppl_prolog.outlines.hh.

2002-03-01 Friday 15:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Makefile.am (1.5), ppl_prolog.outlines.hh
	  (1.1): Will try to derive as much Prolog interfaces as possible
	  from this one.

2002-03-01 Friday 14:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/Ciao/: ppl_ciao.cc (1.2), ppl_ciao.pl (1.2):
	  Ciao only handles integer type `int'.  Added placeholders for
	  linker and compiler options.

2002-03-01 Friday 14:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* interfaces/Prolog/Ciao/: ppl_ciao.cc (1.1), ppl_ciao.pl (1.1):
	  Put under CVS control.  The structure of ppl_ciao.pl is basically
	  there, even if there still are gaps to be filled. ppl_ciao.cc,
	  for the moment, is just a bare copy of the code written for
	  SICStus.

2002-03-01 Friday 12:42  Elisa Ricci

	* src/: conversion.cc, minimize.cc (positive.[5,9]): Tried to
	  implement a new method to compute the system of constraints of a
	  positive polyhedron defined by its system of generators: it is
	  controlled by the flag "POS_SIMPLEX_TRICK".

2002-02-28 Thursday 17:08  Elisa Ricci

	* src/conversion.cc, src/minimize.cc, src/simplify.cc,
	  tests/Makefile.am, tests/bug7.cc, tests/bug7.dat
	  (positive.[4,8,4,8,1,1]): We need the equalities that derived
	  from the constraints of positivity of the variables: this
	  resolves "bug6".  Added a test that still fails.

2002-02-28 Thursday 12:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.6): Reference added.

2002-02-28 Thursday 08:44  Elisa Ricci

	* src/: Generator.defs.hh (1.42), Row.defs.hh (1.28): Changed the
	  place of the comment about the inhomogeneous term of a vertex.

2002-02-27 Wednesday 19:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.14): Better explanations.

2002-02-27 Wednesday 19:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.8),
	  devref-print.doxyconf-latex.in (1.8), devref.doxyconf-html.in
	  (1.9): Predefine PPL_INTERNAL and PPL_HIDDEN.

2002-02-27 Wednesday 18:26  Elisa Ricci

	* NEWS (1.13), src/Polyhedron.cc (1.128), src/Polyhedron.defs.hh
	  (1.77), tests/Makefile.am (1.46), tests/bounded1.cc (1.1): Added
	  the function Polyhedron::is_bounded() that returns true if and
	  only if the polyhedron is bounded.  Added a test for this
	  function.

2002-02-27 Wednesday 17:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/minimize.cc (1.13): In minimize(), added an assertion saying
	  that matrix source is not empty.  Removed a FIXME and added a
	  comment explaining why dest is initialized as what would be a
	  non-legal generator matrix.

2002-02-27 Wednesday 16:52  Elisa Ricci

	* NEWS (1.12): Added the new feature that says that PPL does not
	  call abort(), but we have an error message and the correction of
	  the bug of the negative denominator of the vertex.

2002-02-27 Wednesday 16:36  Elisa Ricci

	* src/: Generator.cc (1.18), Generator.defs.hh (1.41),
	  Polyhedron.cc (1.127): Considered the fact that a vertex must
	  always have a positive denominator.

2002-02-27 Wednesday 14:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.5): Non-Necessarily-Closed Polyhedra.

2002-02-27 Wednesday 14:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.4): Constructions on polyhedra.

2002-02-27 Wednesday 13:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/generators1.cc (1.3): Print something only when NOISY.

2002-02-27 Wednesday 13:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* TODO (1.3): Started with the definition of strict weak ordering
	  and with a statement about why we need one or more of them.

2002-02-27 Wednesday 11:16  Elisa Ricci

	* src/minimize.cc (1.12), tests/generators1.cc (1.2): Used the
	  exception instead of the abort() and modified the test.

2002-02-27 Wednesday 10:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.11), configure.ac (1.28), src/Makefile.am (1.26): We are
	  now in the 0.4 era.

2002-02-27 Wednesday 10:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/minimize.cc (1.11): Polishing the comments in function
	  minimize().  Small changes to the code (no longer using the flag
	  empty_or_illegal).

2002-02-27 Wednesday 09:18  Elisa Ricci

	* tests/: Makefile.am (1.45), generators1.cc (1.1): Added a test
	  for a polyhedron built form a system of generators with a vertex
	  with negative denominator.

2002-02-26 Tuesday 14:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.27): Release number back to 0.3 i order to
	  generate the Web pages' documentation.

2002-02-26 Tuesday 12:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (ppl-0_3-branch.2), README (1.11): Fixed.

2002-02-26 Tuesday 12:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (ppl-0_3-branch.1), NEWS (1.10): Updated.

2002-02-26 Tuesday 12:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.10): Updated.

2002-02-26 Tuesday 12:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (ppl-0_3-branch.1): Updated.

2002-02-26 Tuesday 12:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.26): Bump version number: the main trunk is now
	  in the 0.4 era.

2002-02-26 Tuesday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (ppl-0_3-branch.1): Update version.

2002-02-26 Tuesday 12:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (ppl-0_3-branch.1): Mark ChangeLog.

2002-02-26 Tuesday 11:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (ppl-0_3-branch.1),
	  Makefile.am (1.11): Ignore all space when comparing results.

2002-02-26 Tuesday 11:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.7): Updated.

2002-02-26 Tuesday 11:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.9): Updated.

2002-02-26 Tuesday 11:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.6), config.guess (1.8), doc/definitions.dox (1.36),
	  interfaces/Prolog/SICStus/clpq.pl (1.27),
	  interfaces/Prolog/SICStus/clpq2.pl (1.3),
	  interfaces/Prolog/SICStus/expected (1.4),
	  interfaces/Prolog/SICStus/fib.clpq (1.2),
	  interfaces/Prolog/SICStus/smmdiff.clpq (1.2),
	  src/Constraint.defs.hh (1.38), src/GenSys.cc (1.31),
	  src/Polyhedron.cc (1.126), tests/addconstraints11.cc (1.4),
	  tests/addconstraints5.cc (1.5), tests/adddimensions1.cc (1.5),
	  tests/convexdifference1.cc (1.7), tests/error28.cc (1.2),
	  tests/error29.cc (1.2), tests/universe5.cc (1.3): Trailing blanks
	  removed.

2002-02-26 Tuesday 10:34  Elisa Ricci

	* src/Polyhedron.defs.hh (1.76): Added the documentation for the
	  exception thrown in the function Polyhedron::add_generators and
	  Polyhedron::add_generators_and_minimize if the polyhedron is
	  empty and the system of generators has no vertices.

2002-02-26 Tuesday 09:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.defs.hh (1.37): Simplified the example showing how
	  to use the Constraint::coefficient() methods.

2002-02-26 Tuesday 08:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.15):
	  ppl_convex_difference_assign/2 mentioned.

2002-02-26 Tuesday 02:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.23): Another big pass on all the comments,
	  trying to uniformize the terminology.  Small changes in the code
	  to avoid repeating tests that are useless under certain
	  conditions.

2002-02-25 Monday 22:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.36): Small changes in the
	  documentation.

2002-02-25 Monday 22:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.14), configure.ac (1.25), doc/Makefile.am (1.16),
	  interfaces/Makefile.am (1.3), interfaces/Prolog/Makefile.am
	  (1.4), interfaces/Prolog/SICStus/Makefile.am (1.10),
	  m4/Makefile.am (1.5), m4/ac_check_gmp.m4 (1.3), src/Makefile.am
	  (1.25), tests/Makefile.am (1.44): Limit the exceptions to the
	  GPL.

2002-02-25 Monday 21:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.40): The example on the use of
	  coefficient(v) modified to keep into account the divisor of the
	  vertex and to actually check that g1 is a vertex.

2002-02-25 Monday 18:02  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.35), Generator.defs.hh (1.39):
	  Modified the example of the use of coefficient(v) for a
	  generator.  Modified also the similar example for a constraint,
	  now using the assignment operator.

2002-02-25 Monday 17:28  Elisa Ricci

	* tests/: Makefile.am (1.43), addconstraints10.cc (1.4),
	  addconstraints11.cc (1.3), addconstraints2.cc (1.8),
	  addconstraints4.cc (1.3), addconstraints5.cc (1.4),
	  addconstraints6.cc (1.4), addconstraints7.cc (1.4),
	  addconstraints8.cc (1.4), addconstraints9.cc (1.4),
	  adddimensions1.cc (1.4), adddimensions2.cc (1.3),
	  adddimensions3.cc (1.3), adddimensions4.cc (1.3),
	  addgenerators1.cc (1.4), addgenerators2.cc (1.4),
	  addgenerators3.cc (1.3), addgenerators4.cc (1.3),
	  addgenerators5.cc (1.3), addgenerators6.cc (1.3), affineimage1.cc
	  (1.3), affineimage2.cc (1.3), affinepreimage1.cc (1.3),
	  affinepreimage2.cc (1.3), affinepreimage3.cc (1.2),
	  affinepreimage4.cc (1.3), convexdifference1.cc (1.6),
	  convexhull1.cc (1.4), convexhull2.cc (1.3), error28.cc (1.1),
	  error29.cc (1.1), includes2.cc (1.4), includes3.cc (1.4),
	  includes4.cc (1.4), inters3.cc (1.4), inters4.cc (1.3),
	  inters5.cc (1.4), inters6.cc (1.3), limitedwidening1.cc (1.5),
	  removedim2.cc (1.7), removedim3.cc (1.4), removedim4.cc (1.4),
	  removedim5.cc (1.3), removedim6.cc (1.3), satisfies1.cc (1.6),
	  satisfies2.cc (1.4), satisfies3.cc (1.4), universe1.cc (1.2),
	  universe2.cc (1.2), universe3.cc (1.2), universe4.cc (1.2),
	  universe5.cc (1.2): We use the functions of the file print.hh to
	  print when it is possible.  Added two tests for the functions
	  Polyhedron::add_generators() and
	  Polyhedron::add_generators_and_minimize().

2002-02-25 Monday 17:23  Elisa Ricci

	* src/Polyhedron.cc (1.125): In functions
	  Polyhedron::add_generators() and
	  Polyhedron::add_generators_and_minimize, we throw an exception if
	  we add a system of generators with no vertex to an empty
	  polyhedron.

2002-02-25 Monday 17:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/globals.hh (1.9): Qualified name is not allowed in namespace
	  member declaration.

2002-02-25 Monday 17:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.34), Constraint.inlines.hh (1.18),
	  Generator.defs.hh (1.38), Generator.inlines.hh (1.19),
	  Row.defs.hh (1.27), Row.inlines.hh (1.10): Assignments operators
	  added for Constraint and Generator.  Some cleaning meanwhile.

2002-02-25 Monday 15:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.33): Changed the example showing how to
	  use method coefficient(v) and is_equality(). This shows that we
	  probably miss a public method that is capable to set the
	  relational operator of a constraint.

2002-02-25 Monday 15:02  Elisa Ricci

	* tests/: addconstraints1.cc (1.4), addconstraints10.cc (1.3),
	  addconstraints5.cc (1.3), addconstraints6.cc (1.3),
	  addconstraints7.cc (1.3), addconstraints8.cc (1.3),
	  addconstraints9.cc (1.3), error25.cc (1.3), includes1.cc (1.5),
	  includes2.cc (1.3), includes3.cc (1.3), includes4.cc (1.3),
	  inters5.cc (1.3), satisfies2.cc (1.3), satisfies3.cc (1.3):
	  Corrected some errors in the tests.

2002-02-25 Monday 14:51  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.16), Constraint.defs.hh (1.32),
	  Constraint.inlines.hh (1.17), Generator.cc (1.17),
	  Generator.defs.hh (1.37), Generator.inlines.hh (1.18): Added
	  non-inlined methods that throw exceptions. These are now called
	  by the inline methods coefficient(v).

2002-02-25 Monday 14:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.7), config.sub (1.7): Updated.

2002-02-25 Monday 14:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.124), Row.cc (1.27), Row.defs.hh (1.26):
	  Row::first(), Row::last(), Row::next() and Row::prev() are gone.

2002-02-25 Monday 13:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/conversion.cc (1.22): Started polishing comments. Avoided
	  swapping rows with themselves.  A few other tiny improvements.

2002-02-25 Monday 12:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: addconstraints10.cc (1.2), addconstraints11.cc (1.2),
	  addconstraints2.cc (1.7), addconstraints4.cc (1.2),
	  addconstraints5.cc (1.2), addconstraints6.cc (1.2),
	  addconstraints7.cc (1.2), addconstraints8.cc (1.2),
	  addconstraints9.cc (1.2), adddimensions1.cc (1.3),
	  adddimensions2.cc (1.2), adddimensions3.cc (1.2),
	  adddimensions4.cc (1.2), addgenerators1.cc (1.3),
	  addgenerators2.cc (1.3), addgenerators3.cc (1.2),
	  addgenerators4.cc (1.2), addgenerators5.cc (1.2),
	  addgenerators6.cc (1.2), affineimage2.cc (1.2),
	  affinepreimage1.cc (1.2), affinepreimage2.cc (1.2),
	  affinepreimage4.cc (1.2), affinetrans.cc (1.7),
	  convexdifference1.cc (1.5), convexhull1.cc (1.3), convexhull2.cc
	  (1.2), convexhull3.cc (1.2), error18.cc (1.2), error20.cc (1.2),
	  error21.cc (1.2), error25.cc (1.2), error26.cc (1.2), error27.cc
	  (1.2), error6.cc (1.3), error7.cc (1.2), error9.cc (1.2),
	  includes1.cc (1.4), includes2.cc (1.2), includes3.cc (1.2),
	  includes4.cc (1.2), inters3.cc (1.3), inters4.cc (1.2),
	  inters5.cc (1.2), inters6.cc (1.2), permute.cc (1.13), print.hh
	  (1.5), removedim3.cc (1.3), removedim4.cc (1.3), removedim5.cc
	  (1.2), removedim6.cc (1.2), satisfies1.cc (1.5), satisfies2.cc
	  (1.2), satisfies3.cc (1.2): Started putting some order in the way
	  results are returned how objects are built, and how we print
	  things in NOISY mode.  While at it, a zillion of trailing blanks
	  have been removed.

2002-02-25 Monday 12:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.cc (1.15): Unwanted change retracted.

2002-02-25 Monday 11:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.31), Constraint.cc (1.14),
	  Constraint.defs.hh (1.31), GenSys.defs.hh (1.42),
	  Generator.defs.hh (1.36), Makefile.am (1.24),
	  ppl_filter_doxygen.sed (1.1), ppl_filter_install.sed (1.1): Now
	  PPL_INTERNAL means `private' everywhere we are not compiling the
	  library itself.  PPL_HIDDEN, instead, is `private' only to keep
	  doxygen from including documentation that is not for the user.

2002-02-25 Monday 10:02  Elisa Ricci

	* tests/: Makefile.am (1.42), addconstraints10.cc (1.1),
	  addconstraints11.cc (1.1), addconstraints4.cc (1.1),
	  addconstraints5.cc (1.1), addconstraints6.cc (1.1),
	  addconstraints7.cc (1.1), addconstraints8.cc (1.1),
	  addconstraints9.cc (1.1), adddimensions2.cc (1.1),
	  adddimensions3.cc (1.1), adddimensions4.cc (1.1),
	  addgenerators3.cc (1.1), addgenerators4.cc (1.1),
	  addgenerators5.cc (1.1), addgenerators6.cc (1.1), affineimage2.cc
	  (1.1), affinepreimage1.cc (1.1), affinepreimage2.cc (1.1),
	  affinepreimage3.cc (1.1), affinepreimage4.cc (1.1),
	  convexhull2.cc (1.1), convexhull3.cc (1.1), error10.cc (1.1),
	  error11.cc (1.1), error12.cc (1.1), error13.cc (1.1), error14.cc
	  (1.1), error15.cc (1.1), error16.cc (1.1), error17.cc (1.1),
	  error18.cc (1.1), error19.cc (1.1), error20.cc (1.1), error21.cc
	  (1.1), error22.cc (1.1), error23.cc (1.1), error24.cc (1.1),
	  error25.cc (1.1), error26.cc (1.1), error27.cc (1.1), error6.cc
	  (1.2), error7.cc (1.1), error8.cc (1.1), error9.cc (1.1),
	  includes2.cc (1.1), includes3.cc (1.1), includes4.cc (1.1),
	  inters4.cc (1.1), inters5.cc (1.1), inters6.cc (1.1),
	  removedim5.cc (1.1), removedim6.cc (1.1), satisfies2.cc (1.1),
	  satisfies3.cc (1.1), universe1.cc (1.1), universe2.cc (1.1),
	  universe3.cc (1.1), universe4.cc (1.1), universe5.cc (1.1): Added
	  new tests for the functions of the Polyhedron class.

2002-02-25 Monday 09:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/conversion.cc (1.21): Two kludges (with FIXME) to continue
	  supporting GCC 2.96.

2002-02-25 Monday 08:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.14): Minor typos fixed.

2002-02-25 Monday 08:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.13): Add CIAO Prolog to
	  the list of (to be) supported systems and sort the list of
	  prologs alphabetically.

2002-02-25 Monday 01:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.30), Generator.defs.hh (1.35): Added
	  examples on the use of methods coefficient(v), coefficient() and
	  divisor(), as well as (en passant) the method Generator::type().

2002-02-25 Monday 00:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Row.defs.hh (1.25): Added comments to methods first(),
	  last(), next(...) and prev(...).

2002-02-24 Sunday 22:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: addconstraints2.cc (1.6), includes1.cc (1.3),
	  satisfies1.cc (1.4): Do not use private methods.

2002-02-24 Sunday 21:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Init.cc (1.1), Init.defs.hh (1.1), Init.inlines.hh (1.1),
	  Init.types.hh (1.1), Makefile.am (1.23), Row.cc (1.26),
	  conversion.cc (1.20), globals.cc (1.3), globals.hh (1.8),
	  initializer.hh (1.1): New standard compliant mechanism for the
	  library initialization and finalization.  New implementation for
	  tmp_Integer (worth a speedup greater than 3%).

2002-02-24 Sunday 19:31  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/SatRow.inlines.hh (1.9): Spurious space in comment removed.

2002-02-24 Sunday 19:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.cc (1.16): Using function
	  all_homogeneous_terms_are_zero() when building a ray or line to
	  check their validity.

2002-02-24 Sunday 19:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.inlines.hh (1.17): Throwing an exception if
	  Generator::coefficient(v) is called with a variable beyond the
	  space-dimension.

2002-02-24 Sunday 19:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.inlines.hh (1.16): We now throw an exception if
	  Constraint::coefficient(v) is called with a variable which is
	  beyond the current space-dimension.

2002-02-24 Sunday 19:25  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.123): Many comments adjusted. We now use the
	  BE_LAZY flag in Polyhedron::operator<=, where we do not
	  necessarily minimize given arguments.

2002-02-24 Sunday 19:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.30): Using "satisfy" instead of "verify" when
	  talking about the relation between a generator and a constraint.

2002-02-24 Sunday 12:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.13), README (1.9), configure.ac (1.24),
	  doc/Makefile.am (1.15), doc/definitions.dox (1.35),
	  interfaces/Makefile.am (1.2), interfaces/Prolog/Makefile.am
	  (1.3), interfaces/Prolog/SICStus/Makefile.am (1.9),
	  interfaces/Prolog/SICStus/clpq.pl (1.26),
	  interfaces/Prolog/SICStus/clpq2.pl (1.2),
	  interfaces/Prolog/SICStus/expected (1.3), m4/Makefile.am (1.4),
	  m4/ac_check_gmp.m4 (1.2), src/ConSys.cc (1.22),
	  src/ConSys.defs.hh (1.30), src/ConSys.inlines.hh (1.11),
	  src/ConSys.types.hh (1.2), src/Constraint.cc (1.13),
	  src/Constraint.defs.hh (1.29), src/Constraint.inlines.hh (1.15),
	  src/Constraint.types.hh (1.2), src/GenSys.cc (1.29),
	  src/GenSys.defs.hh (1.41), src/GenSys.inlines.hh (1.11),
	  src/GenSys.types.hh (1.2), src/Generator.cc (1.15),
	  src/Generator.defs.hh (1.34), src/Generator.inlines.hh (1.16),
	  src/Generator.types.hh (1.2), src/Integer.cc (1.2),
	  src/Integer.defs.hh (1.2), src/Integer.inlines.hh (1.2),
	  src/Integer.types.hh (1.2), src/LinExpression.cc (1.9),
	  src/LinExpression.defs.hh (1.22), src/LinExpression.inlines.hh
	  (1.10), src/LinExpression.types.hh (1.2), src/Makefile.am (1.22),
	  src/Matrix.cc (1.27), src/Matrix.defs.hh (1.15),
	  src/Matrix.inlines.hh (1.14), src/Matrix.types.hh (1.2),
	  src/Polyhedron.cc (1.122), src/Polyhedron.defs.hh (1.75),
	  src/Polyhedron.inlines.hh (1.15), src/Polyhedron.types.hh (1.2),
	  src/Row.cc (1.25), src/Row.defs.hh (1.24), src/Row.inlines.hh
	  (1.9), src/Row.types.hh (1.2), src/SatMatrix.cc (1.11),
	  src/SatMatrix.defs.hh (1.12), src/SatMatrix.inlines.hh (1.7),
	  src/SatMatrix.types.hh (1.2), src/SatRow.cc (1.5),
	  src/SatRow.defs.hh (1.9), src/SatRow.inlines.hh (1.8),
	  src/SatRow.types.hh (1.2), src/Status.cc (1.9),
	  src/Status.defs.hh (1.11), src/Status.inlines.hh (1.5),
	  src/Status.types.hh (1.2), src/Variable.cc (1.4),
	  src/Variable.defs.hh (1.11), src/Variable.inlines.hh (1.5),
	  src/Variable.types.hh (1.2), src/conversion.cc (1.19),
	  src/globals.hh (1.7), src/minimize.cc (1.10), src/ppl_header.top
	  (1.3), src/simplify.cc (1.10), tests/Makefile.am (1.41),
	  tests/addconstraints1.cc (1.3), tests/addconstraints2.cc (1.5),
	  tests/addconstraints3.cc (1.2), tests/adddimensions1.cc (1.2),
	  tests/addgenerators1.cc (1.2), tests/addgenerators2.cc (1.2),
	  tests/affineimage1.cc (1.2), tests/affinetrans.cc (1.6),
	  tests/append1.cc (1.8), tests/append2.cc (1.9),
	  tests/convexdifference1.cc (1.4), tests/convexhull1.cc (1.2),
	  tests/ehandlers.hh (1.3), tests/empty1.cc (1.6), tests/error1.cc
	  (1.7), tests/error2.cc (1.9), tests/error3.cc (1.9),
	  tests/error4.cc (1.4), tests/error5.cc (1.5), tests/includes1.cc
	  (1.2), tests/inters1.cc (1.8), tests/inters2.cc (1.10),
	  tests/inters3.cc (1.2), tests/limitedwidening1.cc (1.4),
	  tests/limitedwidening2.cc (1.3), tests/onepoint.cc (1.2),
	  tests/permute.cc (1.12), tests/randchull1.cc (1.10),
	  tests/removedim1.cc (1.3), tests/removedim2.cc (1.6),
	  tests/removedim3.cc (1.2), tests/removedim4.cc (1.2),
	  tests/satisfies1.cc (1.3), tests/smm1.cc (1.2), doc/devref.tex
	  (1.7), doc/user.tex (1.8): Copyright year bumped.

2002-02-23 Saturday 17:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/convexdifference1.cc (1.3): Do not be noisy.

2002-02-23 Saturday 17:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.121), tests/convexdifference1.cc (1.2):
	  Polyhedron::convex_difference_assign() fixed.

2002-02-23 Saturday 16:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.120): Method
	  Polyhedron::convex_diffrence_assign corrected.  The new version
	  forces the result to be a _closed_ polyhedron.

2002-02-23 Saturday 14:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.8), src/Polyhedron.cc (1.119), src/Polyhedron.defs.hh
	  (1.74), tests/Makefile.am (1.40), tests/convexdifference1.cc
	  (1.1): New methods Polyhedron::convex_difference_assign(const
	  Polyhedron&) and
	  Polyhedron::convex_difference_assign_and_minimize(const
	  Polyhedron&).  They assigns to *this the convex hull of the
	  set-theoretic difference of *this and the argument (possibly non
	  minimized or minimized, respectively).
	  Polyhedron::convex_hull_assign() was missing the final
	  assert(OK()).

2002-02-22 Friday 22:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.7), src/Polyhedron.cc (1.118), src/Polyhedron.defs.hh
	  (1.73), tests/limitedwidening1.cc (1.3),
	  tests/limitedwidening2.cc (1.2):
	  Polyhedron::limited_widening_assign(const Polyhedron&, ConSys&)
	  was erroneously returning a (random) boolean: it is now a void
	  method.

2002-02-22 Friday 19:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.39), limitedwidening2.cc (1.1): New test
	  to check that the case where the passed constraint system is
	  inconsistent with respect to the widened polyhedron.	Note: it
	  currently fails, since Polyhedron::limited_widening_assign() is
	  buggy, as it is now.

2002-02-22 Friday 19:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/limitedwidening1.cc (1.2): Improved: now we check also the
	  returned boolean.

2002-02-22 Friday 19:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/print.hh (1.4): New functions to print the constraints and
	  the generators.

2002-02-22 Friday 19:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.117): Readability improvements to
	  Polyhedron::limited_widening_assign().

2002-02-22 Friday 18:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.116): Slightly optimized operator <=(const
	  Polyhedron& x, const Polyhedron& y).

2002-02-22 Friday 08:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.6): Updated for release 0.3.

2002-02-20 Wednesday 19:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.5): Updated.

2002-02-20 Wednesday 13:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.115): In Polyhedron::add_constraints(ConSys&
	  cs), turned on the BE_LAZY version which does not sort matrices
	  and does not perform unnecessary copies.

2002-02-17 Sunday 23:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/satisfies1.cc (1.2): Avoid a compiler warning when NOISY is
	  0.

2002-02-17 Sunday 21:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* acinclude.m4 (1.2), configure.ac (1.23),
	  interfaces/Prolog/SICStus/Makefile.am (1.8), m4/Makefile.am
	  (1.3), m4/ac_check_gmp.m4 (1.1), m4/ac_check_gmp_exceptions.m4
	  (1.3), m4/ac_check_have_gmp.m4 (1.3), tests/Makefile.am (1.38):
	  GMP configuration machinery rewritten (this should help people
	  trying to build the PPL under CygWin).

2002-02-15 Friday 16:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bug6.dat (positive.2): This is the correct test data.

2002-02-15 Friday 16:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: bug1.cc, bug2.cc, bug3.cc, bug4.cc, bug5.cc, bug6.cc
	  (positive.[3,2,2,2,2,2]): All the invocations of Polyhedron::OK()
	  were misplaced.

2002-02-15 Friday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug6.cc, bug6.dat (positive.[7,1,1]): bug6
	  shows that problems minimizations problems persist.

2002-02-14 Thursday 14:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.22), src/Integer.cc (1.1), src/Integer.defs.hh
	  (1.1), src/Integer.inlines.hh (1.1), src/Integer.types.hh (1.1),
	  src/Makefile.am (1.21): Integer stuff moved up one level.

2002-02-14 Thursday 13:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.37), affine_image1.cc (1.2),
	  affineimage1.cc (1.1): For consistency, affine_image1.cc has been
	  renamed affineimage1.cc.

2002-02-14 Thursday 13:17  Elisa Ricci

	* tests/: Makefile.am (1.36), adddimensions1.cc (1.1),
	  convexhull1.cc (1.1), inters3.cc (1.1), limitedwidening1.cc
	  (1.1), removedim4.cc (1.1): Added tests for the functions
	  Polyhedron::add_dimensions_and_project(),
	  Polyhedron::convex_hull_assign(),
	  Polyhedron::intersection_assign(),
	  Polyhedron::limited_widening_assign() and
	  Polyhedron::remove_higher_dimensions().

2002-02-14 Thursday 11:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.114): Added comments regarding the handling
	  of the `sorted' flag in methods remove_dimensions and
	  remove_higher_dimensions.

2002-02-14 Thursday 11:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.cc (1.28): In method remove_invalid_lines_and_rays(),
	  we do not need to keep the generators sorted (this saves
	  efficiency, since we were always calling it with a possibly
	  non-sorted system).  Using remove_invalid_lines_and_rays() in
	  affine_image.

2002-02-14 Thursday 10:04  Elisa Ricci

	* src/Generator.cc (1.14): Changed the error message and the
	  comment in function Generator::OK().

2002-02-14 Thursday 09:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.27), Polyhedron.cc (1.113): Avoiding all
	  shadowing of the space_dim member of a Polyhedron.  Now using the
	  accessor Polyhedron::space_dimension() only when needed.  Fixed a
	  few comments.

2002-02-14 Thursday 09:37  Elisa Ricci

	* src/Polyhedron.cc (1.112), tests/Makefile.am (1.35),
	  tests/includes1.cc (1.1): Erased the abort() at the end of
	  function Polyhedron::includes(g) and added a test for this
	  function.

2002-02-13 Wednesday 23:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.21): Bump version number.

2002-02-13 Wednesday 23:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.26), GenSys.defs.hh (1.40): Overload the
	  output operator for GenSys_Con_Rel.

2002-02-13 Wednesday 23:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.34), affine_image1.cc (1.1), satisfies1.cc
	  (1.1): New test programs.

2002-02-13 Wednesday 19:08  Elisa Ricci

	* src/: GenSys.cc (1.25), Polyhedron.cc (1.111): Modified the
	  function Polyhedron::satisfies(...).	In function
	  GenSys::affine_image(...) we erase the rows that have all the
	  terms equal to zero.

2002-02-13 Wednesday 12:07  Elisa Ricci

	* src/minimize.cc (positive.7): In functions minimize() and
	  add_and_minimize(), to obtain the system of constraints in the
	  case !con_to_gen now we use conversion().

2002-02-12 Tuesday 15:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug5.cc, bug5.dat (positive.[6,1,1]): bug5
	  shows that we still have problems with minimization.

2002-02-12 Tuesday 10:10  Elisa Ricci

	* src/minimize.cc (positive.6): We must simplify also `dest' in
	  function minimize to erase all redundant constraints in the case
	  !con_to_gen.	In functions minimize() and add_and_minimize(), in
	  the case !con_to_gen, there was an error when we choose the
	  constraints to erase.

2002-02-11 Monday 12:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug4.cc, bug4.dat (positive.[5,1,1]): bug4
	  shows that we still have minimization problems.

2002-02-11 Monday 11:49  Elisa Ricci

	* src/minimize.cc (positive.5): In function add_and_minimize, we
	  must simplify `dest' in the case !con_to_gen because it can
	  contain redundant constraints.

2002-02-11 Monday 10:57  Elisa Ricci

	* src/: conversion.cc, minimize.cc, simplify.cc (positive.[3,4,3]):
	  In function add_and_minimize and in the case of !con_to_gen, the
	  system of constraints (that in this case is `dest') must contain
	  the constraints of positivity of variables.  In minimize and
	  add_and_minimize, we must erase the constraints that are a linear
	  combination of an equality and a constraint of positivity of
	  variables.

2002-02-09 Saturday 07:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (positive.4): Error message made more specific.

2002-02-07 Thursday 16:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug3.cc, bug3.dat (positive.[4,1,1]): bug3
	  shows that Polyhedron::minimize() does not minimize.

2002-02-07 Thursday 14:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatMatrix.cc, SatMatrix.inlines.hh (positive.[1,1]):
	  SatMatrix::columns_erase_to_end() fixed (and no longer inline).

2002-02-07 Thursday 12:25  Elisa Ricci

	* src/: Row.cc, minimize.cc (positive.[3,3]): Corrected an error in
	  the function Row::only_a_term_is_positive().	In minimize and in
	  the case !con_to_gen we must call simplify() also for the `dest'
	  because there is the possibility that constraints that are
	  redundant with the constraints of positivity of variables are
	  present in dest.

2002-02-06 Wednesday 08:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug2.cc, bug2.dat (positive.[3,1,1]): bug2
	  shows another problem this time cropping up in
	  SatMatrix::columns_erase_to_end().

2002-02-06 Wednesday 08:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/bug1.cc (positive.2): Assert that the input polyhedra are
	  OK.

2002-02-06 Wednesday 07:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.110): Error messages improved.

2002-02-05 Tuesday 22:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am, bug1.cc, bug1.dat (positive.[2,1,1]): bug1
	  shows a problem with
	  Polyhedron::convex_hull_assign_and_minimize().

2002-02-05 Tuesday 22:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (positive.3): The input operator now handles
	  the `positive' flag.

2002-02-05 Tuesday 16:02  Elisa Ricci

	* src/Matrix.cc, src/Matrix.defs.hh, src/Polyhedron.cc,
	  src/Polyhedron.defs.hh, src/Polyhedron.inlines.hh, src/Row.cc,
	  src/Row.defs.hh, src/conversion.cc, src/minimize.cc,
	  src/simplify.cc, tests/Makefile.am, tests/addconstraints1.cc,
	  tests/addconstraints2.cc, tests/addconstraints3.cc,
	  tests/addgenerators1.cc, tests/addgenerators2.cc,
	  tests/affinetrans.cc, tests/append1.cc, tests/append2.cc,
	  tests/empty1.cc, tests/error2.cc, tests/error3.cc,
	  tests/error4.cc, tests/error5.cc, tests/error6.cc,
	  tests/inters1.cc, tests/inters2.cc, tests/onepoint.cc,
	  tests/permute.cc, tests/randchull1.cc, tests/removedim1.cc,
	  tests/removedim2.cc, tests/removedim3.cc, tests/smm1.cc
	  (positive.[1,1,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]):
	  Considered the case of a positive poited cone (i.e. a polyhedron
	  composed by points that satisfies the constraints of positivity
	  of all variables).  Added a test that shows that we can not add
	  or insert a line in a positive pointed cone.	All the tests use
	  positive pointed cones.

2002-02-04 Monday 22:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.109): More concise usage of stringstreams.

2002-02-03 Sunday 07:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.6), config.sub (1.6): Updated.

2002-02-01 Friday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc, Polyhedron.defs.hh, Polyhedron.inlines.hh,
	  Row.cc, Row.defs.hh, conversion.cc, minimize.cc, simplify.cc
	  (positive.[1,1,1,1,1,1,1,1]): The work on positive polyhedra is
	  being moved onto the `positive' branch.  Phase 2: latest changes
	  reapplied on the branch.

2002-02-01 Friday 15:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.108), Polyhedron.defs.hh (1.72),
	  Polyhedron.inlines.hh (1.14), Row.cc (1.24), Row.defs.hh (1.23),
	  conversion.cc (1.18), minimize.cc (1.9), simplify.cc (1.9): The
	  work on positive polyhedra is being moved onto the `positive'
	  branch.  Phase 1: latest changes undone.

2002-01-31 Thursday 08:35  Elisa Ricci

	* src/: Polyhedron.cc (1.107), Polyhedron.defs.hh (1.71),
	  Polyhedron.inlines.hh (1.13), Row.cc (1.23), Row.defs.hh (1.22),
	  conversion.cc (1.17), minimize.cc (1.8), simplify.cc (1.8):
	  Started to consider the case of positive polyhedra: this part is
	  controlled by POSITIVE.

2002-01-29 Tuesday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.20): Tell the user how to configure GMP.

2002-01-29 Tuesday 15:41  Elisa Ricci

	* src/Polyhedron.cc (1.106): In function
	  Polyhedron::remove_higher_dimensions, erased the command `size_t
	  space_dim = space_dimension()' because it caused a problem.

2002-01-29 Tuesday 11:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.19), interfaces/Prolog/SICStus/ppl_sicstus.cc
	  (1.28), m4/ac_check_gmp_exceptions.m4 (1.2),
	  m4/ac_check_have_gmp.m4 (1.2), src/Constraint.cc (1.12),
	  src/Constraint.inlines.hh (1.14), src/Generator.cc (1.13),
	  src/Generator.defs.hh (1.33), src/LinExpression.cc (1.8),
	  src/LinExpression.inlines.hh (1.9), src/Matrix.cc (1.26),
	  src/Matrix.inlines.hh (1.13), src/Polyhedron.defs.hh (1.70),
	  src/Row.cc (1.22), src/Row.defs.hh (1.21), src/conversion.cc
	  (1.16), src/globals.hh (1.6), tests/randchull1.cc (1.9): We now
	  use the integer C++ class of GMP, instead of baking our own.
	  Note: we now require GMP 4.0.1 or higher.

2002-01-29 Tuesday 08:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.20): Finish backing out the unwanted commit.

2002-01-29 Tuesday 08:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.105): Better formatting for error messages.

2002-01-29 Tuesday 08:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.cc (1.11), Constraint.inlines.hh (1.13),
	  Generator.cc (1.12), Generator.defs.hh (1.32), LinExpression.cc
	  (1.7), LinExpression.inlines.hh (1.8), Matrix.cc (1.25),
	  Matrix.defs.hh (1.14), Matrix.inlines.hh (1.12), Polyhedron.cc
	  (1.104), Polyhedron.defs.hh (1.69), Row.cc (1.21), Row.defs.hh
	  (1.20), conversion.cc (1.15), globals.hh (1.5): Back out previous
	  commit.

2002-01-29 Tuesday 08:23  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.cc (1.10), Constraint.inlines.hh (1.12),
	  Generator.cc (1.11), Generator.defs.hh (1.31), LinExpression.cc
	  (1.6), LinExpression.inlines.hh (1.7), Makefile.am (1.19),
	  Matrix.cc (1.24), Matrix.defs.hh (1.13), Matrix.inlines.hh
	  (1.11), Polyhedron.cc (1.103), Polyhedron.defs.hh (1.68), Row.cc
	  (1.20), Row.defs.hh (1.19), conversion.cc (1.14), globals.hh
	  (1.4): Better formatting for error messages.

2002-01-29 Tuesday 07:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.27): Fix a couple of
	  namespace and include file glitches.

2002-01-27 Sunday 22:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.18), ppl.spec.in (1.7), doc/Makefile.am (1.14),
	  interfaces/Prolog/SICStus/Makefile.am (1.7), src/Makefile.am
	  (1.18), tests/Makefile.am (1.33): The move to libtool is
	  complete: we can now build and distribute (with, e.g., RPM)
	  static and dynamic versions of the library.

2002-01-27 Sunday 17:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.12), configure.ac (1.17), ltmain.sh (1.1): Start
	  to migrate to libtool.

2002-01-27 Sunday 15:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.28): Fixed a typo in a (documentation)
	  comment.

2002-01-19 Saturday 15:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.29), ConSys.inlines.hh (1.10),
	  GenSys.defs.hh (1.39), GenSys.inlines.hh (1.10): ConSys and
	  GenSys were both missing the assignment operator.

2002-01-14 Monday 08:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.5), config.sub (1.5): Updated.

2001-12-23 Sunday 22:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.19): Include maxmin.hh.

2001-12-20 Thursday 09:21  Elisa Ricci

	* src/Polyhedron.cc (1.102): Modified the part of function
	  Polyhedron::add_constraints(cs) that is controlled by "#if 0":
	  used Matrix::grow(size_t, size_t) instead of resize(size_t,
	  size_t) and swap instead of "=", where it is possible.

2001-12-15 Saturday 11:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.6): Distribute also
	  clpq2.pl.

2001-12-15 Saturday 11:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.23), Polyhedron.cc (1.101), conversion.cc
	  (1.13): Some comments fixed.

2001-12-14 Friday 16:06  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/smmdiff.clpq (1.1): smmdiff.clpq is
	  based on smm.clpq and solves the classic send-more-money problem
	  so that each variable is bound to a unique number.

2001-12-14 Friday 16:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq2.pl (1.1): clpq2.pl is an
	  alternative meta-interpreter with some extra features, including
	  disjunction.

2001-12-13 Thursday 16:52  Elisa Ricci

	* tests/: Makefile.am (1.32), addgenerators1.cc (1.1),
	  addgenerators2.cc (1.1): Added a test for the function
	  Polyhedron::add_generators_and_minimize(gs) and one for the
	  function Polyhedron::add_generators(gs).

2001-12-13 Thursday 16:50  Elisa Ricci

	* src/: Polyhedron.cc (1.100), Polyhedron.defs.hh (1.67): The
	  function Polyhedron::add_generators(gs) now is called
	  Polyhedron::add_generators_and_minimize(gs).	Added the function
	  Polyhedron::add_generators(gs) that adds the system of generators
	  "gs" to the polyhedron without minimizing the resulting
	  polyhedron.

2001-12-13 Thursday 11:35  Elisa Ricci

	* src/Polyhedron.cc (1.99): In functions
	  Polyhedron::add_constraints() and add_constraints_and_minimize()
	  improved the comments for the case of a zero-dimensional
	  polyhedron.

2001-12-13 Thursday 08:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.98): Some comments have been improved.

2001-12-12 Wednesday 18:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.31), bug1.cc (1.2), bug2.cc (1.2):
	  Obsolete bug witnesses removed.

2001-12-12 Wednesday 18:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.30), addconstraints3.cc (1.1): New test.

2001-12-12 Wednesday 18:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.10), Generator.defs.hh (1.30),
	  LinExpression.defs.hh (1.21), Matrix.cc (1.22), Polyhedron.cc
	  (1.97), Polyhedron.defs.hh (1.66), Polyhedron.inlines.hh (1.12),
	  Row.cc (1.18), Row.defs.hh (1.18), conversion.cc (1.12),
	  minimize.cc (1.7), simplify.cc (1.7): Kill trailing blanks.

2001-12-12 Wednesday 18:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Row.cc (1.17): The function compare(const Row& x, const Row&
	  y) can now compare rows of different size.

2001-12-12 Wednesday 17:16  Elisa Ricci

	* src/: Polyhedron.cc (1.96), Polyhedron.inlines.hh (1.11): The
	  function Polyhedron::set_zero_dim_univ() is now in Polyhedron.cc
	  (instead of Polyhedron.inlines.hh), says that a zero-dimensional
	  polyhedron is in a 0-dimensional space and clears the system of
	  the polyhedron.  Used "space_dim" instead of "space_dimension()"
	  (where we call this function many times).

2001-12-12 Wednesday 14:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.95): Some minor improvements.

2001-12-11 Tuesday 22:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.94): Bad uses of the negation operator `!'
	  have been fixed.  Some comments improved.

2001-12-11 Tuesday 19:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatMatrix.cc (1.10), SatMatrix.defs.hh (1.11): Wrong
	  comments fixed.

2001-12-11 Tuesday 19:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatMatrix.defs.hh (1.10): Spurious declarations removed: two
	  methods were declared and never used nor implemented.

2001-12-11 Tuesday 18:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.defs.hh (1.12), Matrix.inlines.hh (1.10): Comments
	  for Matrix::clear() adjusted.

2001-12-11 Tuesday 18:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: SatMatrix.cc (1.9), SatMatrix.defs.hh (1.9),
	  SatMatrix.inlines.hh (1.6): SatMatrix::clear() was complete
	  nonsense: rewritten.

2001-12-11 Tuesday 17:10  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.inlines.hh (1.9): Matrix::clear() now releases as much
	  memory as possible.

2001-12-11 Tuesday 16:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.tex (1.6), user.tex (1.7): People that are no longer
	  contributing or willing to contribute take a back seat (will
	  simplify the publication of the documentation as a technical
	  report).

2001-12-11 Tuesday 11:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatRow.inlines.hh (1.7): Much more efficient (and concise)
	  implementation for SatRow::clear_from().

2001-12-11 Tuesday 10:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.93), Polyhedron.defs.hh (1.65): Comments
	  added for Polyhedron::remove_higher_dimensions().

2001-12-11 Tuesday 09:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.92): Polyhedron::Polyhedron(ConSys& cs)
	  improved.

2001-12-11 Tuesday 00:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.21), Matrix.defs.hh (1.11): Always compile
	  Matrix::check_sorted().  Matrix::OK() fixed: the symbols `cerr'
	  and `endl' live in the `std' namespace.

2001-12-11 Tuesday 00:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.20), Matrix.inlines.hh (1.8), Polyhedron.cc
	  (1.91): A default-constructed (empty) Matrix is now declared as
	  sorted.  Matrix::grow() was not handling the `sorted' flag
	  correctly: fixed.  Matrix::add_zero_columns() is now an inline
	  method.  Matrix::OK() now checks that the `sorted' flag is set
	  only if the matrix is actually sorted.
	  Matrix::add_rows_and_columns() now asserts OK() before returning.
	  Some comments fixed.

2001-12-10 Monday 16:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatMatrix.cc (1.8): SatMatrix::resize() was not shrinking the
	  matrix when requested to do so: fixed.

2001-12-10 Monday 12:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatMatrix.cc (1.7): Added speculative memory allocation for
	  SatMatrix.

2001-12-10 Monday 08:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.90), Row.defs.hh (1.17): Some comments
	  have been fixed.

2001-12-09 Sunday 11:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.16): Bump version number so as to avoid
	  confusion.

2001-12-08 Saturday 10:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/expected (1.2), src/Row.defs.hh (1.16):
	  EXTRA_NORMALIZATION defaults to 0.  Expected outcome from the
	  clpq test updated.

2001-12-05 Wednesday 18:58  Elisa Ricci

	* src/: ConSys.cc (1.21), GenSys.cc (1.24), Matrix.cc (1.19),
	  Matrix.defs.hh (1.10), Polyhedron.cc (1.89), Row.cc (1.16),
	  Row.defs.hh (1.15), conversion.cc (1.11): The method
	  Row::normalize() has been restored so that it only ensures
	  coefficients are mutually prime.  The new method
	  Row::strong_normalize() also ensures that the first non-zero
	  coefficient of lines and equalities is negative.  The new method
	  Matrix::strong_normalize() that calls strongly normalizes each
	  row.	Strong normalization is now used wherever it is guaranteed
	  to be both safe and efficient.  The "EXTRA_NORMALIZATION" flag is
	  used to decide whether strong_normalization is also used in
	  Row::libear_combine() (since in this case strong normalization
	  can incur performance penalties).

2001-12-03 Monday 09:16  Elisa Ricci

	* src/Row.cc (1.15): Changed the function Row::normalize() so that
	  the first coefficient different from zero is negative (and not
	  positive).

2001-12-02 Sunday 16:09  Elisa Ricci

	* src/: Matrix.cc (1.18), Polyhedron.cc (1.88), Row.cc (1.14): In
	  Polyhedron::intersection_assign_and_minimize added the assertion
	  to verify if the resulting polyhedron is OK.	In function
	  Row::normalize() if we normalize an equality or a line, we decide
	  that the first element of the corresponding row is positive.	In
	  function Matrix::back_substitute(), if we call linear_combine
	  with an equality and an inequality, we must change the
	  coefficients of the equality so that the coefficient of the
	  inequality in the linear combination is non-negative.

2001-11-26 Monday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.4), config.sub (1.4): Updated.

2001-11-26 Monday 17:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.26): Typo fixed.

2001-11-21 Wednesday 19:26  Elisa Ricci

	* src/Polyhedron.cc (1.87): Changed the message of some exceptions:
	  where it is possible we use the functions
	  `throw_different_dimensions' and `throw_dimension_incompatible'.

2001-11-20 Tuesday 20:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.25): End-of-line characters
	  left behind be read_term/2 are now eaten.

2001-11-13 Tuesday 21:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.4): Updated.

2001-11-13 Tuesday 21:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.5): Mention that we have greatly improved the
	  documentation.

2001-11-13 Tuesday 21:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.3): Updated.

2001-11-13 Tuesday 21:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.12): Use `| ?-'
	  everywhere a goal is introduced.

2001-11-13 Tuesday 21:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/Prolog_interface.dox (1.11): `E.g.' and `i.e.'
	  must always be followed by comma.  There are no exceptions to
	  this rule.

2001-11-13 Tuesday 18:14  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.10): Documentation for
	  ppl_add_consraints_and _minimize and for ppl_copy_polyhedron
	  added.  Two examples for ppl_insert_constraints added that
	  compare with examples for those for
	  ppl_add_consraints_and_minimize.  Introductory sentence added.
	  "To be written"  replaced by "Support for XXX ...future release."

2001-11-13 Tuesday 17:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.8): Updated for release 0.2.

2001-11-13 Tuesday 17:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.15): Version number bumped to 0.2.

2001-11-13 Tuesday 17:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.4): PPL 0.2 will be released on November 14, 2001.

2001-11-13 Tuesday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.5): Packaging issues
	  solved.

2001-11-13 Tuesday 15:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: Makefile.am (1.4), check_script
	  (1.1), expected (1.1): Use the meta-interpreter for `make check'.

2001-11-13 Tuesday 15:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.24): reconsult(File) command
	  fixed.

2001-11-13 Tuesday 15:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_check.pl (1.7): Gone, at last.

2001-11-13 Tuesday 15:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.23): Legalese added.

2001-11-13 Tuesday 10:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.22): Better support for
	  debugging.  Now the `spy' command works as expected by most
	  Prolog users.

2001-11-13 Tuesday 09:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/tak.clpq (1.1): New test program.

2001-11-13 Tuesday 09:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ack.clpq (1.3), ackn.clpq (1.1):
	  ack.clpq is the original version whereas ackn.clpq is the
	  normalized version.

2001-11-12 Monday 22:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.21): Fixed a bug whereby
	  original_goal_variables/1 was not retracted in some cases.
	  Multiple clauses for original_goal_variables/1 were causing the
	  use of already discarded polyhedra.

2001-11-12 Monday 22:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.25): When compiled
	  with run-time assertions switched on, the interface now checks
	  that the Prolog caller is not messing around with Polyhedron's
	  addresses.

2001-11-12 Monday 17:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.20): Use
	  ppl_add_constraints_and_minimize/2 instead of adding one
	  constraint at a time and then checking for emptiness.

2001-11-12 Monday 17:41  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_sicstus.cc (1.24), ppl_sicstus.pl
	  (1.15): New interface predicate
	  ppl_add_constraints_and_minimize/2.

2001-11-12 Monday 16:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.19): Fixed bug in
	  read_clauses/1: now unit clauses are read correctly.

2001-11-12 Monday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.18): The meta-interpreter
	  core has been rewritten.  Computed answer constraints are also
	  output in a readable way with variables named as in the original
	  goal.

2001-11-12 Monday 16:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.9): General
	  improvements throughout the file.

2001-11-12 Monday 09:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.8): A linear expression
	  for defining constraints or generators can only have integer
	  coefficients.  Therefore division by a number is not allowed and
	  option removed from the grammar rules.  Also a number can
	  multiply a PPL variable but not an arbitrary linear expression.

2001-11-11 Sunday 18:19  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.guess (1.3), config.sub (1.3): Updated.

2001-11-11 Sunday 18:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/Makefile.am (1.3): Missing dependency
	  added: pplsp depends on the library.	Do not assume `.' is in
	  PATH.

2001-11-11 Sunday 17:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.27), Constraint.inlines.hh (1.11),
	  Generator.defs.hh (1.29), Generator.inlines.hh (1.15),
	  Row.defs.hh (1.14): std::swap() specialized both for Constraint
	  and Generator.  Less verbose comments for such a simple
	  operation.

2001-11-11 Sunday 17:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/GenSys.cc (1.23): Spurious assertions removed.

2001-11-11 Sunday 17:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.28), ConSys.inlines.hh (1.9), GenSys.cc
	  (1.22), GenSys.defs.hh (1.38), GenSys.inlines.hh (1.9):
	  ConSys::swap() and GenSys::swap() removed: they are inherited
	  from Matrix.	GenSys::remove_invalid_lines_and_rays()
	  implemented.

2001-11-11 Sunday 16:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: GenSys.cc (1.21), GenSys.defs.hh (1.37), Polyhedron.cc
	  (1.86): Use Constraint::trivial_true() and
	  Constraint::trivial_false().	Prepare to remove invalid line and
	  rays from a GenSys.  This is necessary in the
	  Polyhedron::remove_...() methods.

2001-11-11 Sunday 16:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.cc (1.20): Use Constraint::is_trivial_true().

2001-11-11 Sunday 15:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.9), Generator.defs.hh (1.28): Added `bool
	  Generator::OK() const'.

2001-11-11 Sunday 15:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.cc (1.9), Constraint.defs.hh (1.26):
	  Constraint::is_trivial() renamed is_trivial_true().
	  Constraint::is_unsatisfiable() renamed is_trivial_false().  Both
	  now use Row::all_homogeneous_terms_are_zero().

2001-11-11 Sunday 15:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Row.cc (1.13), Row.defs.hh (1.13): Added `bool
	  Row::all_homogeneous_terms_are_zero() const'.

2001-11-11 Sunday 12:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.85): All other things being equal, prefer
	  pre-increment/decrement to post-increment/decrement.

2001-11-10 Saturday 20:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: append1.cc (1.7), append2.cc (1.8), permute.cc (1.11):
	  Infamous relops are already neutralized in ppl_install.hh.

2001-11-09 Friday 19:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.29), smm1.cc (1.1): New test program.

2001-11-09 Friday 18:28  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.17): Now clpq.pl does not
	  require the lists module.

2001-11-09 Friday 17:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.16): Now a vertex is
	  inserted before any lines or rays.  This avoids a bug when
	  inserting generators into the empty polyhedron.

2001-11-09 Friday 16:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.15): Now the interpreter
	  answers "yes" or "no".  The listing/0 command has been improved.

2001-11-09 Friday 15:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Matrix.cc (1.17), Matrix.defs.hh (1.9), Polyhedron.cc
	  (1.84), Row.cc (1.12), Row.defs.hh (1.12), conversion.cc (1.10):
	  Another go at smart memory allocation.

2001-11-09 Friday 15:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/addconstraints2.cc (1.4): Catch standard exceptions.

2001-11-09 Friday 14:22  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.7): Corrections and
	  improvements as suggested by Enea implemented.  Other corrections
	  done and examples added.

2001-11-09 Friday 13:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.14): Now there are no calls
	  to the ppl_convex_hull_assign operation.  This version keeps the
	  list of generators and uses that to recover from failure paths.

2001-11-09 Friday 08:48  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.13): Now many of the
	  unwanted temporary copies of polyhedra are deleted earlier.

2001-11-08 Thursday 22:23  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.6): More detailed
	  specification of the interface predicates with many examples
	  added.  Introduction includes grammar rules and list of some
	  important issues wrt using the PPL in Prolog.

2001-11-08 Thursday 17:37  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.12): Each constraint output
	  on a new line.

2001-11-08 Thursday 15:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/ppl_sicstus.pl (1.14): Comment
	  containing documentation removed.

2001-11-08 Thursday 15:30  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.11): The main polyhedron is
	  now deleted when solve(goal) fails.

2001-11-08 Thursday 12:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.10): Unwanted polyhedra are
	  deleted now when calls to solve/7 fail.

2001-11-08 Thursday 11:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.16): Matrix::resize_no_copy() now deals with the
	  case where the vector of rows must be reallocated.

2001-11-08 Thursday 10:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/Prolog_interface.dox (1.5): Detailed predicate
	  descriptions drafted for SICStus Prolog.

2001-11-08 Thursday 08:33  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.9): Some improvements to the
	  efficiency by replacing calls to member/2 by member_check/2 and
	  by reducing the number of calls to ppl_check_empty.  Also,
	  numbervars/3 replaced by numvars/3 defined within clpq.pl.

2001-11-07 Wednesday 13:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/ppl_sicstus.pl (1.13): First draft of
	  documentation for ppl_sicstus.pl the interface for Prolog.

2001-11-07 Wednesday 11:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.8): This version tries to
	  reduce the amount of memory leakage between requests for more
	  solutions and between tests.

2001-11-06 Tuesday 16:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.7): More small improvements
	  made.

2001-11-06 Tuesday 16:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/: ack.clpq (1.2), clpq.pl (1.6):
	  clpq.pl: The comments have been corrected and 	 some
	  simplifications to the code.	ack.clpq: A bug in the second
	  clause corrected.

2001-11-06 Tuesday 15:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/clpq.pl (1.5): Temporary version. This
	  is working but needs commenting and further checking.

2001-11-05 Monday 11:36  Elisa Ricci

	* src/ConSys.cc (1.19), src/ConSys.defs.hh (1.27), src/GenSys.cc
	  (1.20), src/GenSys.defs.hh (1.36), src/Polyhedron.cc (1.83),
	  src/Polyhedron.defs.hh (1.64), tests/affinetrans.cc (1.5),
	  tests/error2.cc (1.8): Changed the name of some functions:
	  Polyhedron::assign_variable --> Polyhedron::affine_image
	  Polyhedron::substitute_variable --> Polyhedron::affine_preimage
	  GenSys::assign_variable --> GenSys::affine_image
	  ConSys::substitute_variable --> ConSys::affine_preimage The new
	  names are used in the examples and in the tests.

2001-11-05 Monday 10:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/smm.clpq (1.1): A new example program.

2001-11-05 Monday 09:57  Elisa Ricci

	* src/Polyhedron.cc (1.82): At the end of the functions
	  Polyhedron::add_dimensions_and_project and
	  Polyhedron::add_dimensions_and_constraints, we can have an empty
	  polyhedron without the flag EMPTY sets: so, the assertion OK() is
	  modified not to verify if the system of constraints is
	  satisfiable.

2001-11-05 Monday 09:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ack.clpq (1.1), fib.clpq (1.1),
	  mc91.clpq (1.1), sumto.clpq (1.1): Small programs to test
	  clpq.pl.

2001-11-05 Monday 08:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.81): The final OK() assertion of
	  Polyhedron::add_dimensions_and_embed() has been modified so as to
	  allow for empty polyhedra.  Needs checking.  A similar analysis
	  must be conducted on Polyhedron::add_dimensions_and_project().

2001-11-05 Monday 08:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.4): Let `.clpq' be the
	  default extension.

2001-11-05 Monday 07:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.17), Matrix.cc (1.15), Matrix.inlines.hh
	  (1.7), Row.defs.hh (1.11), Row.inlines.hh (1.8), globals.hh
	  (1.3): Speculative memory allocation is now completely
	  implemented.	The function `size_t compute_capacity(size_t
	  requested_size)' is now in namespace scope, since it is used both
	  for Row's and for Matrix columns.  Its current implementation
	  (2*(requested_size+1)) is to be considered experimental.

2001-11-04 Sunday 22:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.34): Doxygen no longer causes a spurious
	  string of characters in the user manual.

2001-11-04 Sunday 22:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.14): In Matrix(const Matrix& y) the right
	  row-capacity is computed for the copy.

2001-11-04 Sunday 19:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.13): The methods Matrix::add_row(...) are now
	  careful with respect to reallocation of the `rows' vector.  The
	  stage is now ready for speculative memory allocation.

2001-11-04 Sunday 19:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.25), Constraint.inlines.hh (1.10),
	  Polyhedron.cc (1.80): Added and used `const Constraint&
	  Constraint::zero_dim_positivity()'.

2001-11-04 Sunday 15:59  Elisa Ricci

	* src/Polyhedron.cc (1.79): In functions
	  Polyhedron::update_constraints and Polyhedron::update_generators
	  we only have a saturation matrix up-to-date: so, we must say that
	  the other is not up-to-date.	In function
	  Polyhedron::assign_variable, if the transformation is not
	  invertible, we must have the system of generators up-to-date, and
	  then if the polyhedron is non-empty, we use the function
	  GenSys::assign_variable to find the resulting polyhedron. so, we
	  always modify the polyhedron (we do not modify the polyhedron if
	  it is empty or if there are dimensional problems).

2001-11-04 Sunday 15:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.78): Polyhedron::remove_...() methods
	  improved.

2001-11-04 Sunday 12:56  Elisa Ricci

	* src/Matrix.cc (1.12): A wrong comment erased: it is not true that
	  the Row::linear_combine changes the flag `sorted' of the matrix.

2001-11-04 Sunday 12:22  Elisa Ricci

	* src/Polyhedron.cc (1.77): In functions
	  Polyhedron::assign_variable and Polyhedron::substitute_variable
	  we must clear the flags SAT_C_UP_TO_DATE and SAT_G_UP_TO_DATE,
	  because after the operations the polyhedron is changed.

2001-11-04 Sunday 12:01  Elisa Ricci

	* src/Matrix.cc (1.11): In function Matrix::gauss(), we change a
	  row without changing "changed" that indicates that the matrix is
	  changed: so the flag "sorted" of the matrix was true even if the
	  matrix was not sorted.

2001-11-04 Sunday 10:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.23):
	  ppl_intersection_assign/2 calls
	  Polyhedron::intersection_assign().

2001-11-04 Sunday 09:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.18), GenSys.cc (1.19), Makefile.am (1.16),
	  Matrix.cc (1.10), Matrix.defs.hh (1.8), Matrix.inlines.hh (1.6),
	  Polyhedron.cc (1.76), Row.cc (1.11), Row.defs.hh (1.10),
	  Row.inlines.hh (1.7), SatRow.inlines.hh (1.6), conversion.cc
	  (1.9), globals.cc (1.2), globals.hh (1.2), minimize.cc (1.6):
	  OK() methods changed to allow for ConSys and GenSys with a single
	  column.

	  Temporary Integer's now incapsulated into a function: the source
	  globals.cc is no longer necessary.

	  The funcionality of Matrix::compute_row_capacity() is now
	  provided by Row::compute_capacity().

	  Tracking of capacity improved (there are still several problems
	  though).  Matrix::sort_rows() rewritten: the STL algorithms keep
	  the freedom of making copies of rows and we cannot accept that.

	  Temporaty kludges added to the Matrix::add_row() methods: if the
	  rows vector must grow, the implementation will copy the rows
	  changing their capacity.  A proper solution to this problem must
	  be found.

	  OK() safety checks added tp Polyhedron::remove_dimensions() and
	  Polyhedron::remove_higher_dimensions().

	  Polyhedron::remove_dimensions() and
	  Polyhedron::remove_higher_dimensions() where not clearing the
	  "generators are minimized" flag.  With this change the flag is
	  cleared a bit too often.  A proper solution must be found.

	  Polyhedron::remove_dimensions() and
	  Polyhedron::remove_higher_dimensions() now use
	  Matrix::resize_no_copy() instead of Matrix::resize() in order to
	  shrink matrices.

	  Row::OK() added and used.  When compiling with assertions each
	  rows brings its own capacity in the capacity_ flag.  The
	  consistency of this information is checked by Row::OK() which, in
	  turn, is called by Matrix::OK() for each row of the matrix.  For
	  internal use, the capacity_ field can be accessed by `size_t
	  Row::capacity() const'.

	  `void Row::assign(Row& y)' added to assign the implementation of
	  y to *this.

	  `std::iter_swap()' specialized both for vector<Row> and
	  vector<SatRow>.

2001-11-04 Sunday 08:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.28), bug2.cc (1.1): bug2.cc shows a
	  problem whereby we do not correctly keep track of the status of
	  saturation matrices.

2001-11-04 Sunday 08:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.27), bug1.cc (1.1): bug1.cc shows a
	  problem with the tracking of matrix sortedness.

2001-11-03 Saturday 17:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/append1.cc (1.6): Two assertions added: they prove that
	  Polyhedron::remove_dimensions() is broken.

2001-11-03 Saturday 13:49  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.26), GenSys.defs.hh (1.35): "no guarantee
	  at all" changed into "no guarantees" as suggested by Pat.

2001-11-03 Saturday 10:45  Elisa Ricci

	* src/Polyhedron.cc (1.75): In a comment correct an error: there
	  was "systemo" instead of "system".

2001-11-03 Saturday 10:40  Elisa Ricci

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.22),
	  src/Polyhedron.cc (1.74), src/Polyhedron.defs.hh (1.63),
	  tests/inters1.cc (1.7), tests/inters2.cc (1.9): The function
	  Polyhedron::intersection_assign now is
	  Polyhedron::intersection_assign_and_minimize.  Added a new
	  function Polyhedron::intersection_assign that computes the
	  intersection between x and y without minimizing the result.

2001-11-02 Friday 17:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.3): Use
	  ppl_remove_higher_dimensions/2.

2001-11-02 Friday 17:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_sicstus.cc (1.21), ppl_sicstus.pl
	  (1.12): Added ppl_remove_higher_dimensions/2.

2001-11-02 Friday 17:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.73), Polyhedron.defs.hh (1.62): New method
	  drafted: void Polyhedron::remove_higher_dimensions(size_t
	  new_dimension).

2001-11-02 Friday 17:22  Elisa Ricci

	* src/Polyhedron.cc (1.72), src/Polyhedron.defs.hh (1.61),
	  tests/addconstraints1.cc (1.2), tests/append1.cc (1.5),
	  tests/append2.cc (1.7), tests/error3.cc (1.8), tests/permute.cc
	  (1.10): The Polyhedron::add_constraints now is
	  Polyhedron::add_constraints_and_minimize, while
	  Polyhedron::add_constraints_lazy now is only
	  Polyhedron::add_constraints.	The Polyhedron::convex_hull_assign
	  now is Polyhedron::convex_hull_assign_and_minimize, while
	  Polyhedron::convex_hull_assign_lazy now is
	  Polyhedron::convex_hull_assign.

2001-11-02 Friday 16:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/clpq.pl (1.2): Some infrastructure
	  added to simplify loading programs and trying them.

2001-11-02 Friday 15:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.33), src/ConSys.defs.hh (1.25),
	  src/Constraint.defs.hh (1.24), src/GenSys.defs.hh (1.34),
	  src/Generator.defs.hh (1.27), src/LinExpression.defs.hh (1.20),
	  src/Polyhedron.defs.hh (1.60): A further scan on almost all user
	  documentation in order to better comment on space-dimensionality
	  checks.

2001-11-02 Friday 14:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: clpq.pl (1.1), solve.pl (1.19):
	  Renamed.

2001-11-02 Friday 14:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Matrix.cc (1.9): Matrix::resize_no_copy() improved.  It now
	  preserves the sortedness flag in the easy cases.

2001-11-02 Friday 13:28  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.18): Comments added
	  throughout.

2001-11-02 Friday 09:01  Elisa Ricci

	* src/Row.cc (1.10): In a comment of operator *(Row, Row) used
	  "dimension-compatible", instead of "dimension-compatibility".

2001-11-02 Friday 08:24  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.17): An improved version of
	  the interpreter. This is a bit faster.

2001-11-01 Thursday 19:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.26): Link the GMP library after the PPL.

2001-11-01 Thursday 19:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.14): The --with-cc configure option has been
	  fixed (it affected CXX instead of CC).

2001-11-01 Thursday 18:08  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.16): Now only use the
	  copied polyhedron when trying a clause.

2001-11-01 Thursday 17:27  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.15): Bug is fixed and test
	  added to check bug is dead.  Also, more care is taken to remove
	  polyhedron that are no longer needed.

2001-11-01 Thursday 15:44  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.14): Now, delete_polyhedron
	  is used when the call to solve((A,B)...) fails as well as when it
	  succeeds.

2001-11-01 Thursday 15:36  Elisa Ricci

	* src/: ConSys.cc (1.17), GenSys.cc (1.18), Row.cc (1.9),
	  Row.defs.hh (1.9): Erased the function projected_scalar_prod(x,
	  y) and used instead of it the operator * that it is changed to
	  support also the case of x.size() < y.size (operator * so can be
	  used in the case x.size <= y.size).  The functions
	  GenSys::satisfy(Constraint) and
	  ConSys::satisfies_all_constraints(Generator) are modified to use
	  only the operator *.

2001-11-01 Thursday 14:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.13): Names of terms made
	  more descriptive.

2001-11-01 Thursday 14:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.cc (1.8), Matrix.inlines.hh (1.5),
	  Polyhedron.inlines.hh (1.10), Row.cc (1.8), Row.defs.hh (1.8),
	  SatMatrix.defs.hh (1.8), SatMatrix.inlines.hh (1.5),
	  SatRow.defs.hh (1.8), SatRow.inlines.hh (1.5), Status.cc (1.8),
	  Status.defs.hh (1.10), Status.inlines.hh (1.4),
	  Variable.inlines.hh (1.4): Using the \related doxygen command
	  everywhere appropriate (but not using it for specialization of
	  std::swap functions).  All inline functions enclosed in namespace
	  delimiters: removed redundant namespace qualifiers accordingly.

2001-11-01 Thursday 13:53  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.12): Now temporary
	  polyhedra are deleted when they are no longer needed.

2001-11-01 Thursday 13:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.11): Old code for
	  ppl_renew_polyhedron that does not use ppl_delete_polyhedron has
	  been restored.

2001-11-01 Thursday 11:49  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.10): Now all but the head
	  variables are projected away.  Other general improvements and
	  corrections done.

2001-11-01 Thursday 10:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.defs.hh (1.7), Polyhedron.cc (1.71), Row.defs.hh
	  (1.7), Row.inlines.hh (1.6): Using the \relates doxygen command
	  for Row and Matrix.  Enclosing inline functions in the namespace
	  delimiters.  Avoiding useless namespace qualifiers.

2001-11-01 Thursday 07:48  Roberto Bagnara <bagnara@cs.unipr.it>

	* NEWS (1.3): Drafted.

2001-10-31 Wednesday 22:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.20): Removed
	  false_constraint_term(): it is no longer needed.

2001-10-31 Wednesday 22:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_sicstus.cc (1.19), ppl_sicstus.pl
	  (1.11), solve.pl (1.9): ppl_copy_polyhedron/2 is now provided by
	  the interface.

2001-10-31 Wednesday 22:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.18): In
	  ppl_get_constraints/2, no longer treat empty polyhedra specially.
	  get_generator() renamed generator_term().

2001-10-31 Wednesday 21:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.17): In
	  ppl_get_generators/2, no longer abort if the polyhedron is
	  zero-dimensional.

2001-10-31 Wednesday 21:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.23), Generator.defs.hh (1.26),
	  Polyhedron.defs.hh (1.59), Variable.defs.hh (1.10): Exploiting
	  the doxygen special command \relates to put the documentation of
	  non-friend functions inside the documentation of the related
	  class.

2001-10-31 Wednesday 21:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.16): All C++
	  exceptions are now handled and translated into Prolog exceptions.

2001-10-31 Wednesday 18:25  Elisa Ricci

	* src/: Matrix.cc (1.7), Polyhedron.cc (1.70): Now, the function
	  merge_row_assign resizes the second matrix if it is necessary: it
	  means that in functions add_constraints_lazy and
	  limited_widening_assign we do not resize the matrix cs.  In
	  Polyhedron::OK the check of the number of columns is not
	  necessary.

2001-10-31 Wednesday 15:37  Elisa Ricci

	* src/Polyhedron.cc (1.69): In function Polyhedron::OK() the case
	  of is_empty == true is considered.

2001-10-31 Wednesday 14:45  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.8): Now, backtracking works
	  for some queries including fibonacci.  Also it works with a test
	  that checks deeper backtracking.

2001-10-31 Wednesday 14:36  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.68): In the checking function OK, we were
	  forgetting return or jump to the appropriate code after having
	  checked the correctness of a 0-space dim polyhedron.

2001-10-31 Wednesday 12:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.67): A missing "return" added inside
	  "add_dimensions_and_constraints".

2001-10-31 Wednesday 12:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.58): Added specification for
	  add_dimensions_and_constraints(ConSys& cs).

2001-10-31 Wednesday 11:52  Elisa Ricci

	* src/Polyhedron.cc (1.66): In functions
	  Polyhedron::widening_assign and
	  Polyhedron::limited_widening_assign considered the case of the
	  polyhedra in a zero-dimensional space.  In function
	  Polyhedron::limited_widening_assign considered the case of
	  cs.space_dimension() < space_dimension().

2001-10-31 Wednesday 11:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/GenSys.defs.hh (1.33): Added an example where a system of
	  generators is printed by using more features of the STL.

2001-10-31 Wednesday 11:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.65): When the user invokes
	  Polyhedron::constraints() on an empty polyhedron, we now return
	  the inconsistent constraint of the right dimension.  This also
	  implies that a polyhedron with the EMPTY flag set can still have
	  a non-empty con_sys; therefore, we clear the con_sys whenever we
	  change the dimension of an empty polyhedron.

2001-10-31 Wednesday 10:28  Elisa Ricci

	* src/: ConSys.cc (1.16), Polyhedron.cc (1.64): In functions
	  Polyhedron::includes and ConSys::satisfies_all_constraints the
	  cases of a polyhedron in a zero-dimensional space and of
	  g.space_dimension < space_dimension are considered.

2001-10-31 Wednesday 09:56  Elisa Ricci

	* src/: GenSys.cc (1.17), Polyhedron.cc (1.63), Row.cc (1.7),
	  Row.defs.hh (1.6): The function projected_scalar_prod() moved in
	  `namespace Parma_Polyhedra_Library'.	The case of
	  c.space_dimension < polyhedron.space_dimension is considered in
	  functions Polyhedron::satisfies and GenSys::satisy.  In function
	  Polyhedron::satisfies the cases of empty polyhedron and of the
	  polyhedron is a zero-dimensional space are considered.

2001-10-31 Wednesday 08:47  Elisa Ricci

	* src/LinExpression.defs.hh (1.19): The copy-constructor of a
	  linear expression with a specified dimension is PPL_INTERNAL and
	  not public.

2001-10-30 Tuesday 22:01  Elisa Ricci

	* tests/affinetrans.cc (1.4): We can use the linear expression `x +
	  4' instead of `x + 0*y + 4'.

2001-10-30 Tuesday 21:57  Elisa Ricci

	* src/: LinExpression.defs.hh (1.18), Polyhedron.cc (1.62): In
	  functions Polyhedron::assign_variable and
	  Polyhedron::substitutte_variable considered the cases of an empty
	  polyhedron and of space_dimension of linear expression <
	  space_dimension of polyhedron.  In LinExpression the
	  copy-constructor with the size of the new linear expression is
	  now public.

2001-10-30 Tuesday 18:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.8), Constraint.defs.hh (1.22): Added
	  PPL_INTERNAL method Constraint::is_unsatisfiable().

2001-10-30 Tuesday 18:01  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.7): Now it allows for
	  constants in the head.

2001-10-30 Tuesday 17:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.6): The interpreter now
	  accepts repeated variables in the head.

2001-10-30 Tuesday 17:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.61), src/Polyhedron.defs.hh (1.57),
	  tests/addconstraints2.cc (1.3): Method
	  add_dimensions_and_constraints_lazy renamed as
	  add_dimensions_and_constraints; signature changed (the argument
	  is no longer const); in the implementation, we swap coefficients
	  instead of copying them.

2001-10-30 Tuesday 15:54  Elisa Ricci

	* src/: Row.cc (1.6), Row.defs.hh (1.5): Added the function Integer
	  projected_scalar_prod(const Row&, const Row&).

2001-10-30 Tuesday 15:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.defs.hh (1.56): Spelling of "poject" to "project"
	  changed.

2001-10-30 Tuesday 15:17  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.60): Spelling error corrected in an output
	  message; for consistency, try always to use the
	  dimension-compatibility concept in error messages.

2001-10-30 Tuesday 15:12  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.5): Adjusted to allow for =
	  instead of == for equality.

2001-10-30 Tuesday 14:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.defs.hh (1.17), LinExpression.inlines.hh
	  (1.6): Added method space_dimension.

2001-10-30 Tuesday 14:54  Elisa Ricci

	* src/Polyhedron.defs.hh (1.55): We do not have any exception if we
	  use the function Polyhedron::constraints() with an empty
	  polyhedron of the function Polyhedron::generators() with a
	  zero-dimensional polyhedron.

2001-10-30 Tuesday 14:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.15): Use '='/2
	  instead of '=='/2 to denote equality.  Fixed a bug whereby the
	  sign of the inhomogeneous term of constraints was inverted.

2001-10-30 Tuesday 14:40  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.59): Started using the methods
	  space_dimension() of classes Constraint, Generator, ConSys and
	  GenSys.

2001-10-30 Tuesday 14:30  Elisa Ricci

	* src/Polyhedron.cc (1.58): In functions Polyhedron::insert used
	  the function space_dimension() (of a constraint or of a
	  generator) instead of size() - 1.

2001-10-30 Tuesday 13:25  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.4): More improvements.

2001-10-30 Tuesday 12:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.24), ConSys.inlines.hh (1.8),
	  GenSys.defs.hh (1.32), GenSys.inlines.hh (1.8): Added method
	  space_dimension() to both ConSys and GenSys.

2001-10-30 Tuesday 12:25  Elisa Ricci

	* src/Polyhedron.cc (1.57): In function
	  add_dimensions_and_constraints_lazy, if we are lazy we only say
	  that the system of constraints is not sorted, otherwise we sort
	  the system of constraints.

2001-10-30 Tuesday 12:17  Elisa Ricci

	* tests/addconstraints2.cc (1.2): Changed the second system of
	  constraints (ConSys c2) to have a non-empty polyhedron.

2001-10-30 Tuesday 12:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.56): insert(const Generator&) improved.

2001-10-30 Tuesday 11:56  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.3): Now upgraded to accept
	  user predicates as well as constraints.

2001-10-30 Tuesday 11:47  Elisa Ricci

	* tests/: Makefile.am (1.25), addconstraints2.cc (1.1): Added the
	  test for the function add_dimensions_and_constraints_lazy.

2001-10-30 Tuesday 11:39  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.55): In add_constraints, after adding NO
	  constraints at all we still need to check for the emptyness of
	  the polyhedron.  In insert(const Constraint&), adjusted
	  assertions and added triviality check when inserting into a
	  zero-dim space polyhedron.

2001-10-30 Tuesday 11:29  Elisa Ricci

	* src/: Polyhedron.cc (1.54), Polyhedron.defs.hh (1.54): Added the
	  function add_dimensions_and_constraints_lazy(const ConSys& cs).

2001-10-30 Tuesday 11:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.53): In add_constraints(_lazy), if a
	  zero-dim space polyhedron is considered, using ConSys iterators
	  to see if an inconsistent polyhedron is created.

2001-10-30 Tuesday 10:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.24), addconstraints1.cc (1.1): Added test
	  for the addition of consistent and inconsistent zero-dim
	  constraints to a zero-dim space polyhedron.  Tests re-ordered
	  alphabetically.

2001-10-30 Tuesday 10:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.2): Some small bugs fixed.

2001-10-30 Tuesday 10:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.23), removedim3.cc (1.1): Added simple
	  test on the removal of dimensions from an empty polyhedron.

2001-10-30 Tuesday 09:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.52), Polyhedron.defs.hh (1.53): BE_LAZY
	  used also in Polyhedron::add_dimensions_and_project.	A couple of
	  assertions added and old code (already commented out) removed.

2001-10-30 Tuesday 09:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* interfaces/Prolog/SICStus/solve.pl (1.1): A first start/attempt
	  at a simple meta-interpreter for CLP(Q).  There is a bug to be
	  fixed.

2001-10-29 Monday 21:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.51): Be lazy.

2001-10-29 Monday 21:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: conversion.cc (1.8), minimize.cc (1.5), simplify.cc (1.6):
	  Comments fixed: the class is called Polyhedron, not Poly.

2001-10-29 Monday 18:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.14): Use
	  Constraint/Generator::space_dimension() instead of the no longer
	  existing last_variable().

2001-10-29 Monday 16:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.21), Constraint.inlines.hh (1.9),
	  Generator.defs.hh (1.25), Generator.inlines.hh (1.14): Removed
	  methods last_variable() and added method space_dimension() to
	  Constraint and Generator.

2001-10-29 Monday 16:46  Elisa Ricci

	* src/Polyhedron.cc (1.50): In Polyhedron(size_t num_dimensions,
	  Degenerate_Kind kind) if we build an universe polyhedron the
	  system of constraints is in the minimal form.  In the function
	  insert(Constraint) added the comment that specify why when we
	  insert the constraint the polyhedron is non-empty.

2001-10-29 Monday 16:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.15), Constraint.cc (1.7), Constraint.defs.hh
	  (1.20): Constraint::is_non_trivial() transformed into
	  Constraint::is_trivial().  Btw, the old evrsion was still wrong.

2001-10-29 Monday 16:26  Elisa Ricci

	* src/Polyhedron.cc (1.49): In function add_constraints,
	  add_constraints_lazy and add_generators the case of
	  cs(gs)_num_columns == 1 && space_dimension() == 0 is considered.

2001-10-29 Monday 16:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* missing (1.3): Updated.

2001-10-29 Monday 14:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Constraint.cc (1.6): Constraint::is_nontrivial() fixed.

2001-10-29 Monday 14:29  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.48): In add_dimensions_and_embed, when
	  embedding a zero-dim universe polyhedron the creation of the
	  system of generators is now guarded by pre-proc flag BE_LAZY.

2001-10-29 Monday 13:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.cc (1.16), GenSys.defs.hh (1.31), GenSys.inlines.hh
	  (1.7), Polyhedron.cc (1.47): Added static member function
	  GenSys::zero_dim_univ() to replace static member
	  GenSys::zero_dim_univ. All inline functions enclosed in the
	  namespace.

2001-10-29 Monday 13:23  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc (1.8), Generator.defs.hh (1.24),
	  Generator.inlines.hh (1.13): Added static member function
	  Generator::zero_dim_vertex().  Functions vertex, ray and line are
	  no longer inlined; for ray and line we now check that the
	  argument does not represent the origin of the space.

2001-10-29 Monday 13:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/ConSys.defs.hh (1.23): Must include <iterator>.

2001-10-29 Monday 12:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.14), ConSys.defs.hh (1.22), ConSys.inlines.hh
	  (1.7), Polyhedron.cc (1.46): Added static member function
	  ConSys::zero_dim_empty().

2001-10-29 Monday 12:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.5), Constraint.defs.hh (1.19),
	  Constraint.inlines.hh (1.8): Added static memebr function
	  Constraint::zero_dim_false().  All inline functions enclosed in
	  the namespace.

2001-10-29 Monday 12:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.cc (1.5), LinExpression.defs.hh (1.16),
	  LinExpression.inlines.hh (1.5): Added static member function
	  LinExpression::zero() in place of static member LinExpression
	  zero.  All inline functions enclosed in the scope of namespace.

2001-10-29 Monday 11:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.45): Polyhedron::Polyhedron(GenSys& gs)
	  improved.

2001-10-29 Monday 10:21  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.13): Require autoconf 2.52e.

2001-10-29 Monday 10:18  Elisa Ricci

	* tests/: affinetrans.cc (1.3), append2.cc (1.6), empty1.cc (1.5),
	  error1.cc (1.6), error2.cc (1.7), error3.cc (1.7), error4.cc
	  (1.3), error5.cc (1.4), inters1.cc (1.6), inters2.cc (1.8),
	  permute.cc (1.9), randchull1.cc (1.8), removedim1.cc (1.2),
	  removedim2.cc (1.5): Added the comment to the tests, the
	  inclusion of the file "ehandlers.hh", use the function
	  set_handlers() and added some NOISY-print of the polyhedra (where
	  they are necessary).

2001-10-29 Monday 09:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/Makefile.am (1.22): Committing Makefile.am was unwanted
	  (error6 is a non-meaningful dummy test).

2001-10-29 Monday 06:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.7), Polyhedron.defs.hh (1.52),
	  conversion.cc (1.7): The Integer constants 0 and 1 are now
	  provided by the static methods Integer::zero() and
	  Integer::one().

2001-10-28 Sunday 21:41  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/ConSys.cc (1.13), src/ConSys.defs.hh (1.21),
	  src/ConSys.inlines.hh (1.6), src/GenSys.cc (1.15),
	  src/GenSys.defs.hh (1.30), src/GenSys.inlines.hh (1.6),
	  src/Generator.defs.hh (1.23), src/Polyhedron.cc (1.44),
	  tests/Makefile.am (1.21): Added static members denoting the
	  zero-dim usatisfiable constraint, teh corresponding constraint
	  system and the system of generators corresponding to the zero-dim
	  universe.

2001-10-28 Sunday 20:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.cc (1.4), Constraint.defs.hh (1.18):
	  is_non_trivial() now correctly handles inconsistent constraints,
	  which should NOT be considered trivial.  Output operator now
	  correctly prints inconsistent constraints.

2001-10-28 Sunday 18:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.4),
	  SICStus/ppl_sicstus.pl (1.10): Added ppl_insert_constraints/2 and
	  ppl_insert_generators/2.

2001-10-28 Sunday 18:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.3),
	  SICStus/ppl_sicstus.cc (1.13), SICStus/ppl_sicstus.pl (1.9):
	  Added ppl_add_dimensions_and_embed/2 and
	  ppl_add_dimensions_and_project/2.

2001-10-28 Sunday 18:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/: Prolog_interface.dox (1.2),
	  SICStus/ppl_check.pl (1.6), SICStus/ppl_sicstus.cc (1.12),
	  SICStus/ppl_sicstus.pl (1.8): ppl_remove_dimensions/2 added.

2001-10-28 Sunday 14:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.11), configure.ac (1.12),
	  interfaces/Prolog/Makefile.am (1.2): Try not to bother people
	  without the SICStus include file.

2001-10-28 Sunday 14:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.cc (1.6), Generator.defs.hh (1.22),
	  Generator.inlines.hh (1.12), LinExpression.cc (1.4),
	  LinExpression.defs.hh (1.15): Now the friend function vertex(e,
	  d) has also its first argument optional; calling vertex() creates
	  the origin of the zero-dim vector space.  Added zero-dim checks
	  to ray(e) and line(e).

2001-10-28 Sunday 13:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.13), doc/devref-browse.doxyconf-latex.in
	  (1.7), doc/devref-print.doxyconf-latex.in (1.7),
	  doc/devref.doxyconf-html.in (1.8),
	  doc/user-browse.doxyconf-latex.in (1.8),
	  doc/user-print.doxyconf-latex.in (1.8), doc/user.doxyconf-html.in
	  (1.10), interfaces/Prolog/Prolog_interface.dox (1.1): Provide a
	  framework for the Prolog interface documentation.

2001-10-28 Sunday 11:12  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/removedim2.cc (1.4): Moved creation of lin-expr
	  infrastructure outside the loop.

2001-10-28 Sunday 10:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_check.pl (1.5), ppl_sicstus.cc
	  (1.11), ppl_sicstus.pl (1.7): Added ppl_get_constraints/2 and
	  ppl_get_generators/2.

2001-10-28 Sunday 10:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.51): Do not create yet another Integer
	  set to one to use as default parameter: use Integer::one instead.

2001-10-28 Sunday 10:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.17), Generator.defs.hh (1.21),
	  Generator.inlines.hh (1.11): New methods of Generator:
	  last_variable(), coefficient(), and divisor().  Harmonized with
	  the ones of Constraint.  Do not create yet another Integer set to
	  one to use as default parameter: use Integer::one instead.

2001-10-28 Sunday 08:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.43): Corrected the error making test
	  `randchull1' fail (I was forgetting to clear flags after
	  insertion of the generator).

2001-10-27 Saturday 22:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/onepoint.cc (1.1): New test on the creation of a one-point
	  polyhedron.

2001-10-27 Saturday 22:52  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.20), error1.cc (1.5), error2.cc (1.6),
	  error3.cc (1.6), error4.cc (1.2), error5.cc (1.3), removedim.cc
	  (1.3), removedim1.cc (1.1), removedim2.cc (1.3): Try to be
	  consistent.

2001-10-27 Saturday 18:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Constraint.defs.hh (1.16), Constraint.inlines.hh (1.7): New
	  Constraint methods: last_variable(), coefficient(Variable v) and
	  coefficient() to return the last variable, the homogeneous and
	  inhomogeneous coefficients.

2001-10-27 Saturday 17:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_check.pl (1.4), ppl_sicstus.cc
	  (1.10), ppl_sicstus.pl (1.6): ppl_new_polyhedron/1 replaced with
	  ppl_new_polyhedron/2 and ppl_new_empty_polyhedron/2.

2001-10-27 Saturday 16:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/definitions.dox (1.32), src/Constraint.defs.hh (1.15),
	  src/Constraint.inlines.hh (1.6), src/Generator.cc (1.5),
	  src/Generator.defs.hh (1.20), src/Generator.inlines.hh (1.10),
	  src/Polyhedron.cc (1.42), src/Polyhedron.defs.hh (1.50),
	  src/Polyhedron.inlines.hh (1.9), src/Status.cc (1.7),
	  src/Status.defs.hh (1.9), src/Status.inlines.hh (1.3),
	  tests/Makefile.am (1.19), tests/affinetrans.cc (1.2),
	  tests/append1.cc (1.4), tests/append2.cc (1.5), tests/empty1.cc
	  (1.4), tests/error3.cc (1.5), tests/error5.cc (1.2),
	  tests/inters2.cc (1.7), tests/permute.cc (1.8), tests/print.hh
	  (1.3), tests/randchull1.cc (1.7), tests/removedim.cc (1.2),
	  tests/removedim2.cc (1.2): All changes on the `space_dim' branch
	  have been merged to the main trunk.

2001-10-27 Saturday 15:30  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (space_dim.12): In Polyhedron::insert(const
	  Generator&) added generator type check.

2001-10-27 Saturday 15:24  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh, Constraint.inlines.hh, Polyhedron.cc,
	  Polyhedron.defs.hh (space_dim.[1,1,11,6]): Default constructor
	  for Constraint is now private and not implemented.  In
	  Polyhedron::insert(const Generator&) we should check that the
	  generator is a vertex if the polyhedron is empty (we cannot add
	  just a ray or a line).

2001-10-27 Saturday 15:12  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_sicstus.cc (1.9), ppl_sicstus.pl
	  (1.5): ppl_widening_assign/2 added.

2001-10-27 Saturday 15:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_sicstus.cc (1.8), ppl_sicstus.pl
	  (1.4): ppl_intersection_assign/2 and ppl_convex_hull_assign/2
	  added.  Try to be as const-correct as possible.

2001-10-27 Saturday 14:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_check.pl (1.3), ppl_sicstus.cc
	  (1.7), ppl_sicstus.pl (1.3): ppl_check_empty/1 added.

2001-10-27 Saturday 14:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.6):
	  SP_register_atom() and SP_unregister_atom() can fail.

2001-10-27 Saturday 14:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/: ppl_check.pl (1.2), ppl_sicstus.cc
	  (1.5), ppl_sicstus.pl (1.2): ppl_insert_generator/2 added.

2001-10-27 Saturday 12:35  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc, src/Polyhedron.defs.hh,
	  src/Polyhedron.inlines.hh, src/Status.cc, src/Status.defs.hh,
	  src/Status.inlines.hh, tests/empty1.cc, tests/inters2.cc,
	  tests/print.hh, tests/randchull1.cc
	  (space_dim.[10,5,2,1,1,1,1,1,1,1]): The zero_dim flag (and
	  methods) in Status changed into more meaningful "zero_dim_univ".
	  A lot of small changes to have a consistent dimension-checking.
	  Now there is one "default" constructor for Polyhedron having two
	  optional arguments: the space dimension (default 0) and the
	  degenerate kind (default UNIVERSE).  Tests adapted to use the new
	  constructor and to avoid using the removed
	  Polyhedron::is_zero_dim().

2001-10-27 Saturday 12:26  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.31): Proposition after Minkowsky's theorem
	  corrected (we can CHOOSE extreme rays so that they have rational
	  coefficients).

2001-10-27 Saturday 11:54  Elisa Ricci

	* tests/: affinetrans.cc, error3.cc (space_dim.[2,2]): To build the
	  polyhedron that we want using the system of generators, we must
	  create the system of generators and then use Polyhedron ph(gs).
	  (If we use Polyhedron ph(num_dim), we have the universe
	  polyhedron and then when we add the generators we do not have our
	  polyhedron but the universe one).

2001-10-27 Saturday 11:49  Elisa Ricci

	* src/Polyhedron.defs.hh (space_dim.4): Added an example for the
	  function remove_dimensions (the example 8).  In the examples when
	  we build a polyhedron we must specify the dimension of the space
	  if then we use the function Polyhedron::insert(Constraint).  We
	  can not do the same thing if then we want to use the function
	  Polyhedron::insert(Generator) In fact, in this case we build the
	  universe polyhedron and then we add the generators. To build a
	  polyhedron starting from the system of generators we must create
	  the system of generators and then use Polyhedron ph(gs).

2001-10-27 Saturday 11:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.11): Version number bumped so as to avoid
	  confusion: 0.2-pre1.

2001-10-27 Saturday 10:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure.ac (1.10), interfaces/Prolog/SICStus/Makefile.am (1.2),
	  interfaces/Prolog/SICStus/ppl_check.pl (1.1),
	  interfaces/Prolog/SICStus/ppl_sicstus.cc (1.4),
	  interfaces/Prolog/SICStus/ppl_sicstus.pl (1.1): Check to see
	  whether `sicstus' is installed: if it is, tests can be performed.
	  Some progress in the interface itself.

2001-10-27 Saturday 10:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.41): ConSys and GenSys do not yet provide a
	  `bool empty() const' method.

2001-10-27 Saturday 10:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.15): Distribute ppl_header.middle.

2001-10-26 Friday 21:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.3): Exception
	  handling improved.

2001-10-26 Friday 19:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc, tests/Makefile.am, tests/removedim2.cc
	  (space_dim.[9,4,1]): Polyhedron::remove_dimensions(...) rewritten
	  from scratch.  Added a new test to check its correctness.

2001-10-26 Friday 18:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* interfaces/Prolog/SICStus/ppl_sicstus.cc (1.2): Can now insert
	  constraints into a polyhedron.

2001-10-26 Friday 16:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am, ppl_header.middle (space_dim.[1,1]): Get
	  around a bug in GCC versions prior to 3 whereby the <cassert>
	  header is wrongly guarded against multiple inclusion.

2001-10-26 Friday 16:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.12), config.h.in (1.10), configure.ac (1.9),
	  interfaces/.cvsignore (1.1), interfaces/Makefile.am (1.1),
	  interfaces/Prolog/.cvsignore (1.1), interfaces/Prolog/Makefile.am
	  (1.1), interfaces/Prolog/SICStus/.cvsignore (1.1),
	  interfaces/Prolog/SICStus/Makefile.am (1.1),
	  interfaces/Prolog/SICStus/ppl_sicstus.cc (1.1): Start working on
	  the Prolog interfaces.

2001-10-26 Friday 16:51  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.14): ppl_install.hh depends also on
	  ppl_header.middle.

2001-10-26 Friday 16:46  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.13), ppl_header.middle (1.1): Get around a
	  bug in GCC versions prior to 3 whereby the <cassert> header is
	  wrongly guarded against multiple inclusion.

2001-10-26 Friday 16:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Polyhedron.cc (1.40), Variable.defs.hh (1.9): Just
	  formatting.

2001-10-26 Friday 13:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (space_dim.8): A few trivial errors inside
	  assertions fixed.

2001-10-26 Friday 12:29  Elisa Ricci

	* src/Polyhedron.cc (space_dim.7): In function add_generators we
	  resize the matrix gs that we want to add if space_dimension() >
	  num_columns() - 1.

2001-10-26 Friday 12:14  Elisa Ricci

	* src/Polyhedron.cc (space_dim.6): Added the dimension-consistency
	  check in the function add_constraints_lazy and add_generators.
	  In functions add_constraints and add_generators we use
	  if(check_empty()) instead of	minimize() if(is_empty()) In
	  functions add_constraints and add_constraints_lazy we resize the
	  matrix of constraints that we add if	num_columns - 1 <
	  space_dimension().

2001-10-26 Friday 12:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.defs.hh, Generator.inlines.hh (space_dim.[1,1]):
	  The default constructor for Generator is now private and
	  unimplemented.

2001-10-26 Friday 11:22  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am, error5.cc, removedim.cc (space_dim.[3,1,2]):
	  New test for dimension-compatibility in
	  Polyhedron::remove_dimensions.  The test still fails because
	  objects of set<Variable> do not provide ordered access to their
	  elements (yet).

2001-10-26 Friday 10:42  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am, removedim.cc, remuvedim.cc
	  (space_dim.[2,1,2]): Test file "remuvedim.cc" renamed.

2001-10-26 Friday 10:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (space_dim.5): Using begin() instead of max()
	  to select the highest dimension variable from a set of variables.

2001-10-26 Friday 10:34  Elisa Ricci

	* tests/: Makefile.am, remuvedim.cc (space_dim.[1,1]): Added a test
	  for the function remuve_dimensions(...).

2001-10-26 Friday 10:34  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (space_dim.4): Some comments improved. Added
	  dimension-compatibility checks to
	  Polyhedron::remove_dimensions(...).

2001-10-25 Thursday 23:21  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc, tests/affinetrans.cc, tests/append1.cc,
	  tests/append2.cc, tests/error3.cc, tests/permute.cc
	  (space_dim.[3,1,1,1,1,2]): Going on ading the right
	  dimension-compatibility checks.  Now the tests are all passed
	  (some of them changed to declare polyhedra dimensions in the
	  constructors, other changed by calling operator
	  add_dimensions_and_embed).

2001-10-25 Thursday 20:59  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.cc (space_dim.1): Strange code indentation fixed.

2001-10-25 Thursday 20:36  Elisa Ricci

	* src/Polyhedron.cc (space_dim.2): In operator <=(x,y) we only need
	  the generators of x and the constraints of y.  In functions
	  intersection_assign and convex_hull, we did two checks of the
	  dimension of the space (one with space_dimension() and the other
	  with num_columns()).	In functions add_dimensions_and_embed and
	  add_dimensions_and_project we have both the system of constraints
	  and the system of generators minimized when we add some
	  dimensions to a polyhedron in a 0-dimensional space.

2001-10-25 Thursday 16:45  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc, src/Polyhedron.defs.hh,
	  src/Polyhedron.inlines.hh, tests/permute.cc
	  (space_dim.[1,3,1,1]): Added private member
	  Polyhedron::space_dim, which stores the number of dimensions of
	  the enclosing space.	Public member Polyhedron::num_dimensions()
	  renamed into Polyhedron::space_dimension() and now reads the
	  member space_dim.  Started modifying methods of the class
	  Polyhedron so that they consistently use space_dimension() and
	  space_dim.  Started guarding methods by suitable
	  dimension-compatibility checks.

2001-10-25 Thursday 11:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (space_dim.2): All comparison operators on
	  Polyhedron throw an exception when the two polyhedra are
	  dimension-incompatible.

2001-10-25 Thursday 11:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox, src/Polyhedron.defs.hh (space_dim.[1,1]):
	  Added an informal specification for dimension-compatibility.	The
	  specification of Polyhedron::insert now says that an exception is
	  thrown if the argument is dimension-incompatible with the
	  polyhedron.

2001-10-24 Wednesday 20:16  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Generator.defs.hh (1.19), Polyhedron.cc (1.39),
	  Polyhedron.defs.hh (1.49): Exceptions are thrown when polyhedra
	  are dimension-incompatible.

2001-10-24 Wednesday 20:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.30): Better explained the difference
	  between the dimension of the polyhedron and the dimension of the
	  enclosing space.  The terminology "dimension-consistent" added.
	  Pointed out what seems to be a problem with empty polyhedrons
	  (what is the dimensions of their enclosing space?)

2001-10-24 Wednesday 14:57  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.29): A full scan on the user-manual
	  portion of the introduction.	In particular: - added a
	  proposition after Minkowsky's theorem for rational polyhedra; -
	  preferring the use of \lambda wrt \mu for scalars; - yet another
	  variation on the definition of extreme rays; - "non-negative"
	  combinations are now "positive" combinations; - better explaining
	  the border-line cases of the generators representation.

2001-10-24 Wednesday 10:47  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.28): Doxygen does not accept "\f(" [and
	  neither the potentially correct "\f\("] as a way to enter LaTeX
	  mathematical environment.  Indexes of vectors goes from 0 to the
	  dim-1.

2001-10-23 Tuesday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.7): Ready for distribution.

2001-10-23 Tuesday 19:43  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.11): Distribute also the BUGS file.

2001-10-23 Tuesday 19:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.12): Produce and make available HTML
	  documentation to be used off-line.

2001-10-23 Tuesday 19:35  Roberto Bagnara <bagnara@cs.unipr.it>

	* BUGS (1.1), NEWS (1.2), TODO (1.2): Initial versions of these
	  files.

2001-10-23 Tuesday 19:23  Elisa Ricci

	* tests/: Makefile.am (1.18), affinetrans.cc (1.1): Added a test
	  for the functions assign_variable and substitute_variable.

2001-10-23 Tuesday 19:21  Elisa Ricci

	* src/Polyhedron.cc (1.38): In function assign_variable and
	  substitute_variable we must have size_t num_columns =
	  x.num_dimensions() + 1 instead of size_t num_columns =
	  x.con_sys(gen_sys).num_columns() because at this point we do not
	  know which system we have.

2001-10-23 Tuesday 18:52  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.27): A small improvement on the
	  explanation of the representation by generators.

2001-10-23 Tuesday 18:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.37), Polyhedron.defs.hh (1.48):
	  Polyhedron::constraints() no longer throws an exception when
	  *this is a zero-dimensional polyhedron (now it returns the empty
	  system of constraints).  Polyhedron::generators() no longer
	  throws an exception when *this is an empty polyhedron (now it
	  returns the empty system of generators).

2001-10-23 Tuesday 18:12  Elisa Ricci

	* src/minimize.cc (1.4): We see the definitions in the Introduction
	  and not in the file definition.dox.

2001-10-23 Tuesday 18:09  Elisa Ricci

	* src/Polyhedron.defs.hh (1.47): Typo fixed.

2001-10-23 Tuesday 18:05  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: Makefile.am (1.17), error4.cc (1.1): Added a test on the
	  exception thrown when building a polyhedron by using a non-empty
	  system of generators with no vertices.

2001-10-23 Tuesday 17:57  Elisa Ricci

	* src/Polyhedron.defs.hh (1.46): Added the explanation of why a
	  parameter of a function is non-constant.

2001-10-23 Tuesday 17:54  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.cc (1.36): Exception messages now use the
	  "function: message" convention.  The comment in
	  PPL::Polyhedron::Polyhedron(GenSys& gs) related to the existence
	  of a vertex improved.

2001-10-23 Tuesday 17:27  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.26): In the proposition after the
	  definition of rays, we need to consider a non-empty polyhedron
	  and a non-zero vector \vect{r}.  It is NOT true that extreme rays
	  define _all_ the directions in which an arbitrary polyhedron is
	  infinite.  Definition of line simplified. A typo fixed in
	  definition of Minkowsky's sum.

2001-10-23 Tuesday 16:50  Elisa Ricci

	* src/Polyhedron.cc (1.35): In function
	  Polyhedron::insert(Constraint), if we add a constraint to an
	  empty polyhedron it remains empty.

2001-10-23 Tuesday 16:35  Elisa Ricci

	* src/: Polyhedron.cc (1.34), Polyhedron.defs.hh (1.45): When a
	  polyhedron is built starting from a system of generators, this
	  must have at least a vertex; otherwise an exception is thrown.

2001-10-23 Tuesday 16:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Generator.cc (1.4), Generator.inlines.hh (1.9),
	  Polyhedron.cc (1.33), Polyhedron.inlines.hh (1.8): Inlining is no
	  longer requested for functions that may throw.

2001-10-23 Tuesday 16:11  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.9), configure.ac (1.8), src/Makefile.am (1.12),
	  src/Row.defs.hh (1.4), src/ppl_header.bottom (1.3),
	  src/ppl_header.top (1.2): Better configuration and macro
	  handling.

2001-10-23 Tuesday 14:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.32): DLEVEL noise removed.

2001-10-23 Tuesday 14:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.8), configure.ac (1.7), src/ConSys.cc (1.12),
	  src/ConSys.defs.hh (1.20), src/ConSys.inlines.hh (1.5),
	  src/Constraint.cc (1.3), src/Constraint.defs.hh (1.14),
	  src/Constraint.inlines.hh (1.5), src/GenSys.cc (1.14),
	  src/GenSys.defs.hh (1.29), src/GenSys.inlines.hh (1.5),
	  src/Generator.cc (1.3), src/Generator.defs.hh (1.18),
	  src/Generator.inlines.hh (1.8), src/LinExpression.cc (1.3),
	  src/LinExpression.defs.hh (1.14), src/LinExpression.inlines.hh
	  (1.4), src/Makefile.am (1.11), src/Matrix.cc (1.6),
	  src/Matrix.defs.hh (1.6), src/Matrix.inlines.hh (1.4),
	  src/Polyhedron.cc (1.31), src/Polyhedron.defs.hh (1.44),
	  src/Polyhedron.inlines.hh (1.7), src/Row.cc (1.5),
	  src/Row.defs.hh (1.3), src/Row.inlines.hh (1.5), src/SatMatrix.cc
	  (1.6), src/SatMatrix.defs.hh (1.7), src/SatMatrix.inlines.hh
	  (1.4), src/SatRow.cc (1.4), src/SatRow.defs.hh (1.7),
	  src/SatRow.inlines.hh (1.4), src/Status.cc (1.6),
	  src/Status.defs.hh (1.8), src/Status.inlines.hh (1.2),
	  src/Variable.cc (1.3), src/Variable.defs.hh (1.8),
	  src/Variable.inlines.hh (1.3), src/ppl_header.bottom (1.2): The
	  INLINE/OUTLINE mechanism has gone: it caused too many problems.

2001-10-23 Tuesday 14:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: GenSys.defs.hh (1.28), GenSys.inlines.hh (1.4): Inserting a
	  generator in a GenSys automatically adjust the dimensions.
	  Specialization of std:swap for GenSys's added.

2001-10-23 Tuesday 14:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.19), ConSys.inlines.hh (1.4): Better
	  documented the fact that, when inserting constraints in a ConSys,
	  dimensions are automatically adjusted.  Added the specialization
	  of function std:swap for ConSys's.

2001-10-23 Tuesday 13:40  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/: definitions.dox (1.25), ppl.sty (1.5): Changes to allow for
	  a decomposition when there are no vertices.

2001-10-23 Tuesday 11:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.43): Brackets closing a namespace
	  should be marked as in

	  namespace Parma_Polyhedra_Library {	...  } // namespace
	  Parma_Polyhedra_Library

2001-10-23 Tuesday 11:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/SatMatrix.inlines.hh (1.3): Must include <cassert>.

2001-10-23 Tuesday 11:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/maxmin.hh (1.2): Put everything in our namespace.

2001-10-23 Tuesday 10:58  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.24): Changes to user introduction to
	  clarify why a polyhedron represented by a system of generators
	  needs a vertex.  On-going improvements to the developer's guide
	  including the removal of some repeated definitions.  Minor bugs
	  fixed.

2001-10-23 Tuesday 10:02  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/Makefile.am (1.16): INCLUDES now includes @extra_includes@.

2001-10-23 Tuesday 09:53  Elisa Ricci

	* src/: ConSys.cc (1.11), GenSys.cc (1.13), simplify.cc (1.5): For
	  the definitions and the rules, we must see the Introduction
	  instead of the file definitions.dox.	In the functions
	  assign_variable and substitute_variable, the parameter "expr" is
	  the "numerator" of affine expression.

2001-10-23 Tuesday 09:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.10), Constraint.cc (1.2),
	  Constraint.inlines.hh (1.4), GenSys.cc (1.12), LinExpression.cc
	  (1.2), Matrix.cc (1.5), Matrix.inlines.hh (1.3), Row.cc (1.4),
	  Row.inlines.hh (1.4), SatMatrix.cc (1.5): Do not request the
	  inlining of functions containing loops.  Be consistent in the use
	  of namespace names and aliases.

2001-10-23 Tuesday 08:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.7), configure.ac (1.6),
	  doc/user-browse.doxyconf-latex.in (1.7),
	  doc/user-print.doxyconf-latex.in (1.7), doc/user.doxyconf-html.in
	  (1.9), src/Makefile.am (1.10), src/Polyhedron.inlines.hh (1.6),
	  src/ppl.cc (1.3), src/ppl_header.bottom (1.1), src/ppl_header.top
	  (1.1), src/protect.sed (1.3), src/restore.sed (1.3),
	  tests/append1.cc (1.3), tests/append2.cc (1.4), tests/empty1.cc
	  (1.3), tests/error1.cc (1.4), tests/error2.cc (1.5),
	  tests/error3.cc (1.4), tests/inters1.cc (1.5), tests/inters2.cc
	  (1.6), tests/permute.cc (1.7), tests/print.hh (1.2),
	  tests/randchull1.cc (1.6): The mechanism for automatically
	  generating the header files has been rewritten from scratch.	We
	  no longer depend on kcc: we use CXXCPP instead.  Avoid checking
	  for header files we do not use.  Try to convince Doxygen not to
	  sort things the way he wants, at least in user's documentation
	  (SORT_MEMBER_DOCS = no).  Using std::invalid argument requires
	  including <stdexcept>.  All tests should include the header file
	  that will be installed (ppl_install.hh) so that we avoid checking
	  against an already installed header (ppl.hh).

2001-10-23 Tuesday 08:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Status.cc (1.5): Do not fight against emacs indentation
	  rules.

2001-10-22 Monday 19:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.18), GenSys.defs.hh (1.27): When using
	  the doxygen command \code, indentation really matters and, for
	  consistency, we should start with a 2-spaces indentation.

2001-10-22 Monday 19:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.17): Example on how to build vertices
	  split into two parts: the first one shows how to build a generic
	  vertex and, in particular, the origin of the space; the second
	  one shows how to use the optional denominator argument.

2001-10-22 Monday 19:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Status.cc (1.4), Status.defs.hh (1.7): An annoying warning
	  about an unused argument dealt with by exploiting pre-processing
	  macro NDEBUG.

2001-10-22 Monday 16:18  Elisa Ricci

	* src/: Polyhedron.cc (1.30), conversion.cc (1.6), simplify.cc
	  (1.4): Used the notation of "vect{..}" for all the vectors that
	  are in the comments.	The definitions and the rules must be seen
	  in the "Introduction" instead of "definitions.dox" or
	  "user_definitions.dox".

2001-10-22 Monday 16:08  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Polyhedron.cc (1.29), Polyhedron.defs.hh (1.42): Now the
	  argument `denominator' for methods Polyhedron::assign_variable
	  and Polyhedron::substitute_variable is a _const_ Integer&,
	  optional and with a default value of 1.

2001-10-22 Monday 15:58  Roberto Bagnara <bagnara@cs.unipr.it>

	* ChangeLog (1.2): Updated.

2001-10-22 Monday 15:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* tests/: error1.cc (1.3), error2.cc (1.4), error3.cc (1.3),
	  inters2.cc (1.5), randchull1.cc (1.5): All tests updated to use
	  the new functions line, ray and vertex.

2001-10-22 Monday 15:10  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.cc (1.9), ConSys.defs.hh (1.17), GenSys.cc (1.11),
	  GenSys.defs.hh (1.26), Generator.defs.hh (1.16),
	  Generator.inlines.hh (1.7), Polyhedron.defs.hh (1.41): Operators
	  |, ^, /= have now been replaced by functions `line', 'ray' and
	  'vertex'. Note that the function vertex has an _optional_ second
	  argument (the denominator), with default value 1.  Hopefully, all
	  the documentation has been changed accordingly (please check).
	  In GenSys and ConSys, now the functions assign_variable and
	  substitute_variable take a _const_ Integer& as their third
	  argument.  The same change cannot be applied to the corresponding
	  functions defined on Polyhedron, since we perform a swap on this
	  argument, so that it cannot be const.  However, I am now seeing
	  if it is possible to have also these as "optional" arguments,
	  with a default value of 1. Alas, I need to read the C++ manual in
	  order to see how I can define a default value for a non-const
	  argument passed by reference.

2001-10-22 Monday 15:05  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.6), configure.ac (1.5),
	  doc/devref-browse.doxyconf-latex.in (1.6),
	  doc/devref-print.doxyconf-latex.in (1.6),
	  doc/devref.doxyconf-html.in (1.7), src/.cvsignore (1.4),
	  src/Makefile.am (1.9), src/SatRow.cc (1.3), src/SatRow.defs.hh
	  (1.6), src/SatRow.inlines.hh (1.3): SatRow reimplemented from
	  scratch: we no longer depend on the BitSet class.

2001-10-22 Monday 14:26  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.23): Changed \alpha in the definition of
	  affine transformations to \lambda.  Added a comment after the
	  definition of "Combinations" that the empty sum is the origin.

2001-10-22 Monday 10:34  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.22): Changes to wording and restructuring
	  of the definition of Polyhedra.  New headings added : Constraints
	  representation and Rational polyheron.  Heading "Generators"
	  replaced by "Generators representation".  Wording in this
	  definition changed

2001-10-22 Monday 10:02  Elisa Ricci

	* src/Polyhedron.defs.hh (1.40): In the comments, there was a
	  system of constraints called "constraints" instead of "cs" and a
	  variable called "var" instead of "v".

2001-10-22 Monday 09:54  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Generator.defs.hh (1.15): Wording of comment on how to build
	  a generator changed. Also minor changes to wording in the
	  following examples.

2001-10-22 Monday 09:52  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.21): I was wrong to remove the
	  "^\transpose" in Weil's theorem - restored.

2001-10-22 Monday 09:25  Elisa Ricci

	* src/Polyhedron.defs.hh (1.39): In two examples, erased the spaces
	  between the factor and the variable.

2001-10-22 Monday 09:04  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.20): Comment at the end of Weil's theorem
	  had "convex" and "positive" and "rays" and "vertices" wrong way
	  round.  Minor change to wording introducing the two theorems.  In
	  final comment of user part, "blurb" removed.

2001-10-22 Monday 08:49  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.19): Removed spurious ^\transpose (^T) in
	  Weil's theorem.  Added "dual representation" as heading and
	  emphasised in text at end of user definitions.

2001-10-21 Sunday 15:50  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.16), GenSys.defs.hh (1.25),
	  Generator.defs.hh (1.14), Generator.inlines.hh (1.6),
	  LinExpression.defs.hh (1.13), LinExpression.inlines.hh (1.3),
	  Polyhedron.defs.hh (1.38): Systems of constraints and generators
	  do not define polyhedra; rather, they may "correspond to" a given
	  polyhedron (the one that would be built by applying the adequate
	  constructor).  A system of generator does not need to include a
	  vertex, in general.  The vertex is needed if the system of
	  generators is meant to correspond to a non-empty polyhedron.	The
	  detailed description of class Generator changed to highlight that
	  vertices, lines and rays are represented as a type plus a
	  direction in the space.

2001-10-21 Sunday 14:00  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.10): CREDITS added to the distribution.

2001-10-21 Sunday 13:04  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.13), Constraint.inlines.hh (1.3): In
	  the documentation, used n to denote the dimension of the space.
	  In the renaming operator >>, the parameter p renamed into offset,
	  consistently with the comment.  In the examples, removed spaces
	  between factor and variable when specifying a linear expression
	  (e.g., "3 * x + 4 * y" now is written "3*x + 4*y").

2001-10-21 Sunday 13:01  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/definitions.dox (1.18): When specifying the coordinates of a
	  point, indexes should range from 0 to n-1, if n is the dimension
	  of the space.  This is to be consistent with definition of class
	  Variable.  Change applied to the definitions of scalar-product,
	  of polytope and to Weil's theorem.  Note: I do not like to say a
	  polyhedron is "open" in one direction; I prefer the terminology
	  "unbounded", so I changed it.

2001-10-21 Sunday 12:09  Elisa Ricci

	* doc/definitions.dox (1.17): Restored some mathematical changes
	  and used the notation "\vect{..}" for all the vectors (also in
	  the part that is not in the user manual).

2001-10-21 Sunday 11:56  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.12), Generator.defs.hh (1.13),
	  Polyhedron.defs.hh (1.37), Variable.cc (1.2), Variable.defs.hh
	  (1.7): In the documentation of the namespace PPL, all non-friend
	  operators are now grouped consistently. I do not like very much
	  the current header of each group ("Non-friend operators on
	  objects ..." is maybe too much implementation-aware), but in any
	  case it is definitely better than the default grouping header
	  ("Functions").

2001-10-21 Sunday 11:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* README (1.6): Now it is in sync with the home page of the www
	  documentation.

2001-10-21 Sunday 11:14  Enea Zaffanella <zaffanella@cs.unipr.it>

	* doc/: definitions.dox (1.16), ppl.sty (1.4): The new macro \vect
	  inserted in ppl.sty; now the macro simply uses the latex command
	  \mathbf, but we can modify its meaning as we like.  Had a run on
	  definitions.dox to consistently use the new macro: be careful, in
	  the future, to use 0 when a scalar is meant, and \vect{0} when
	  the origin of the space is meant.  Also made small, readability
	  related changes to Minkowsky's and Weil's theorems.

2001-10-20 Saturday 21:30  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.5): Equation -> equality.

2001-10-20 Saturday 16:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.4): Almost complete: only the directory structure is
	  missing.

2001-10-20 Saturday 16:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* CREDITS (1.2): Just a formatting change.

2001-10-20 Saturday 16:25  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: definitions.dox (1.15), devref.tex (1.5), user.tex (1.6):
	  Footers fixed.  Put the blame on Doxygen.

2001-10-20 Saturday 16:22  Roberto Bagnara <bagnara@cs.unipr.it>

	* AUTHORS (1.2), CREDITS (1.1): Renamed and completed.

2001-10-20 Saturday 12:22  Elisa Ricci

	* doc/definitions.dox (1.14), src/Polyhedron.defs.hh (1.36): Moved
	  the definition of the universe polyhedron after the definition of
	  the polyhedron.

2001-10-20 Saturday 11:47  Elisa Ricci

	* src/: GenSys.cc (1.10), GenSys.defs.hh (1.24), Polyhedron.cc
	  (1.28), Polyhedron.defs.hh (1.35), Status.defs.hh (1.6),
	  conversion.cc (1.5): Now, we always use `system of' instead of
	  `set of' for GenSys and ConSys.  In the comment of polyhedron
	  added the explanation of what an universal polyhedron is.  Some
	  changes to the comment of the exception: we say that they "have
	  different dimension" instead of that they "do not have the same
	  dimension".

2001-10-20 Saturday 10:26  Elisa Ricci

	* src/LinExpression.defs.hh (1.12): In the second part of the
	  example, we can use  LinExpression e = LinExpression(14) instead
	  of   LinExpression e = LinExpression(Integer(14)).

2001-10-19 Friday 20:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: user-browse.doxyconf-latex.in (1.6),
	  user-print.doxyconf-latex.in (1.6), user.doxyconf-html.in (1.8):
	  No INTERNAL_DOCS, no INHERIT_DOCS, no FILE_PATTERNS, and no
	  EXCLUDE_PATTERNS.

2001-10-19 Friday 19:57  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.defs.hh (1.15), GenSys.defs.hh (1.23): Use
	  PPL_INTERNAL inheritance.

2001-10-19 Friday 18:13  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.13): Generators and associated terminology
	  now defined in the user section.  There is now some repetition of
	  definitions in the developer's section.

2001-10-19 Friday 17:27  Elisa Ricci

	* src/: Polyhedron.cc (1.27), Polyhedron.defs.hh (1.34),
	  Polyhedron.inlines.hh (1.5): Simplified the comment to the
	  function swap.  Used `v' instead of `var', `dim' instead of
	  `add_dim'.  All the ConSys are called `cs' and all the GenSys are
	  called `gs'.	Used the expression "thrown if" to introduce the
	  comment to the exceptions.  The variable is "substituted" in the
	  function substitute_variable.

2001-10-19 Friday 17:19  Elisa Ricci

	* src/: ConSys.cc (1.8), ConSys.defs.hh (1.14), GenSys.cc (1.9),
	  GenSys.defs.hh (1.22): The Generator is called `g' instead of `r'
	  and the number that indicates the variable is called `v' instead
	  of 'var'.

2001-10-19 Friday 17:12  Elisa Ricci

	* src/: Constraint.defs.hh (1.11), Generator.defs.hh (1.12):
	  Constraint and Generator are :: PPL_INTERNAL Row instead of ::
	  public Row (like LinExpression).

2001-10-19 Friday 14:24  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.9), depcomp (1.2), install-sh (1.2), ppl.spec.in
	  (1.6), doc/Makefile.am (1.11), doc/definitions.dox (1.12),
	  doc/devref-browse.doxyconf-latex.in (1.5),
	  doc/devref-print.doxyconf-latex.in (1.5),
	  doc/devref.doxyconf-html.in (1.6), doc/gpl.dox (1.2),
	  doc/user-browse.doxyconf-latex.in (1.5),
	  doc/user-print.doxyconf-latex.in (1.5), doc/user.doxyconf-html.in
	  (1.7), src/ConSys.cc (1.7), src/ConSys.defs.hh (1.13),
	  src/ConSys.inlines.hh (1.3), src/Constraint.defs.hh (1.10),
	  src/GenSys.cc (1.8), src/GenSys.defs.hh (1.21),
	  src/GenSys.inlines.hh (1.3), src/Generator.defs.hh (1.11),
	  src/LinExpression.defs.hh (1.11), src/Makefile.am (1.8),
	  src/Matrix.cc (1.4), src/Matrix.defs.hh (1.5),
	  src/Matrix.inlines.hh (1.2), src/Polyhedron.cc (1.26),
	  src/Polyhedron.defs.hh (1.33), src/Polyhedron.inlines.hh (1.4),
	  src/Row.cc (1.3), src/Row.inlines.hh (1.3), src/SatMatrix.cc
	  (1.4), src/SatMatrix.defs.hh (1.6), src/SatMatrix.inlines.hh
	  (1.2), src/SatRow.defs.hh (1.5), src/SatRow.inlines.hh (1.2),
	  src/Status.cc (1.3), src/Status.defs.hh (1.5), src/conversion.cc
	  (1.4), src/minimize.cc (1.3), src/simplify.cc (1.3),
	  tests/Makefile.am (1.15), tests/append2.cc (1.3), tests/error2.cc
	  (1.3), tests/inters1.cc (1.4), tests/inters2.cc (1.4),
	  tests/permute.cc (1.6): Annoying trailing blanks removed.

2001-10-19 Friday 14:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: LinExpression.defs.hh (1.10), LinExpression.inlines.hh
	  (1.2): We now have only one sizing constructor, and it is
	  private.

2001-10-19 Friday 12:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: conversion.cc (1.3), minimize.cc (1.2), simplify.cc (1.2),
	  Matrix.cc (1.3): Old junk removed.

2001-10-19 Friday 12:15  Elisa Ricci

	* src/: Polyhedron.cc (1.25), Polyhedron.defs.hh (1.32): In
	  functions widening_assign and limited_widening_assign considered
	  the case of empty-polyhedron and the exception for the different
	  dimension of the polyhedra and the matrix (this for the
	  limited_widening); added some explanations for the parameters.
	  In function assign_variable and substitute_variable considered
	  the exceptions for the variable that is not inside the polyhedron
	  and the expression that does not have the right dimension.

2001-10-19 Friday 09:57  Elisa Ricci

	* doc/definitions.dox (1.11): Some mathematical changes.

2001-10-19 Friday 09:42  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.5), configure.ac (1.4): Add checks to determine
	  the size of ints and longs.

2001-10-19 Friday 09:06  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/Polyhedron.defs.hh (1.31): Examples 4 to 7 simplified.

2001-10-19 Friday 08:56  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: Polyhedron.defs.hh (1.30), Variable.defs.hh (1.6): Changes
	  to English.

2001-10-18 Thursday 18:51  Elisa Ricci

	* src/: Polyhedron.cc (1.24), Polyhedron.defs.hh (1.29),
	  Polyhedron.inlines.hh (1.3): In function add_dimensions_and_embed
	  and add_dimensions_and_project the case of "add_dim" = 0 and the
	  case of the empty polyhedron are considered.	In functions
	  add_constraints, add_constraints_lazy, add_generators, generators
	  and constraints instead of some assertion some exceptions are
	  added.

2001-10-18 Thursday 15:36  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: GenSys.defs.hh (1.20), LinExpression.defs.hh (1.9),
	  Polyhedron.defs.hh (1.28): More improvements to the English.

2001-10-18 Thursday 15:29  Elisa Ricci

	* src/GenSys.defs.hh (1.19): The real name of the function is
	  GenSys_Con_Rel satisfy(const Constraint& c) const and not
	  GenSys_Con_Rel satisfy_constraint(const Constraint& c) const.

2001-10-18 Thursday 14:01  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/GenSys.defs.hh (1.18): Just "specify" changed to "specifies".

2001-10-18 Thursday 13:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/: ConSys.defs.hh (1.12), Constraint.defs.hh (1.9),
	  GenSys.defs.hh (1.17), Generator.defs.hh (1.10): Changes to
	  English.  In GenSys.defs.hh the explanation about a system of
	  generators changed to:     An object of the class GenSys is a
	  system of generators,     i.e. a container of objects of the
	  class Generator     (lines, rays and vertices).      The set of
	  generators must include at least one vertex.	    This is needed
	  since a line or ray only specify a direction	    and a point is
	  needed to indicate its position.

2001-10-18 Thursday 12:40  Elisa Ricci

	* src/: Polyhedron.cc (1.23), Polyhedron.defs.hh (1.27): Now the
	  function  GenSys_Con_Rel poly_satisfies_constraint(const
	  Constraint& con) is called  GenSys_Con_Rel satisfies(const
	  Constraint& c).  Added the exception for the functions
	  convex_hull_lazy(), satisfies() and includes().

2001-10-18 Thursday 12:37  Elisa Ricci

	* src/: GenSys.cc (1.7), GenSys.defs.hh (1.16): Now the function
	  PPL::GenSys::satisfy_constraint(const Constraint& c) const is
	  called PPL::GenSys::satisfy(const Constraint& c) const.

2001-10-18 Thursday 11:36  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/ehandlers.hh (1.2): Call exit(1) instead of abort().

2001-10-18 Thursday 11:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.14), append1.cc (1.2), ehandlers.hh (1.1):
	  Set the handlers for unexpected and uncaught exceptions.

2001-10-18 Thursday 09:38  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* src/GenSys.defs.hh (1.15): Small change to wording in
	  GenSys_Con_Rel comment.

2001-10-18 Thursday 09:07  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/permute.cc (1.5): Now the termination conditions are
	  checked.

2001-10-18 Thursday 08:32  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/permute.cc (1.4): Instead of giving the number of variables
	  explicitly, it is obtained as needed using
	  Polyhedron.num_dimensions.

2001-10-18 Thursday 08:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.10): Now `make world' also produces the
	  licenses in various formats.

2001-10-17 Wednesday 20:18  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.22): throw_different_dimensions() fixed.

2001-10-17 Wednesday 20:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.13), permute.cc (1.3): Made quiet.

2001-10-17 Wednesday 20:17  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/error3.cc (1.2): Fixed and made quiet.

2001-10-17 Wednesday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/append.cc (1.4): Renamed append1.cc.

2001-10-17 Wednesday 20:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: append1.cc (1.1), append2.cc (1.2): Renamed.

2001-10-17 Wednesday 19:37  Elisa Ricci

	* tests/error3.cc (1.1): Tests whether convex_hull assign throws
	  when it should.

2001-10-17 Wednesday 19:33  Elisa Ricci

	* src/: Polyhedron.cc (1.21), Polyhedron.defs.hh (1.26):
	  Polyhedron::intersection_assign() and
	  Polyhedron::convex_hull_assign() now throw an exception if asked
	  to operate on polyhedra of different dimensions.

2001-10-17 Wednesday 16:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/permute.cc (1.2): We now use the intended constraints.
	  Termination is guaranteed by using Polyhedron::widening_assign().

2001-10-17 Wednesday 16:31  Elisa Ricci

	* src/: ConSys.defs.hh (1.11), ConSys.inlines.hh (1.2),
	  GenSys.defs.hh (1.14), GenSys.inlines.hh (1.2): Added the
	  function swap for GenSys and ConSys.

2001-10-17 Wednesday 16:21  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/: Makefile.am (1.12), append2.cc (1.1), my_append.cc (1.2),
	  permute.cc (1.1): The file my_append.cc renamed to append2.cc A
	  new test program permute.cc added.  Makefile.am updated to
	  include these tests.

2001-10-17 Wednesday 16:08  Elisa Ricci

	* src/: Polyhedron.cc (1.20), Polyhedron.defs.hh (1.25): Added
	  comments of the parameters to some public functions of
	  Polyhedron.

2001-10-17 Wednesday 15:27  Elisa Ricci

	* src/: ConSys.defs.hh (1.10), Constraint.defs.hh (1.8),
	  GenSys.defs.hh (1.13), Polyhedron.defs.hh (1.24): Now, the
	  definitions of the variables used in the examples are before the
	  examples (they are not inside the examples).

2001-10-17 Wednesday 15:03  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* tests/my_append.cc (1.1): A modified version of append.cc where
	  code is structured into two procedures, one for the initial
	  polyhedra and one for the fix-point.

2001-10-17 Wednesday 12:55  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.10): Definitions of linearly independent
	  and affinely independent improved.

2001-10-17 Wednesday 12:38  Elisa Ricci

	* src/: Constraint.defs.hh (1.7), Generator.defs.hh (1.9),
	  LinExpression.defs.hh (1.8): Now, "friend" mathods are inside the
	  class documentation of these class.  In the "Detail Description"
	  of the class LinExpression there is the paragraph "How to build a
	  linear expression".

2001-10-17 Wednesday 12:03  Elisa Ricci

	* src/Polyhedron.defs.hh (1.23): Used "check_not_empty" instead of
	  "check_satisfiable" also in the comment of function
	  Polyhedron::OK().

2001-10-17 Wednesday 12:01  Elisa Ricci

	* src/: ConSys.defs.hh (1.9), GenSys.defs.hh (1.12), Matrix.defs.hh
	  (1.4), Polyhedron.cc (1.19), Polyhedron.defs.hh (1.22),
	  SatMatrix.cc (1.3), SatMatrix.defs.hh (1.5), SatRow.defs.hh
	  (1.4), Status.defs.hh (1.4): Changed the comments in the function
	  OK().  In function Polyhedron::OK() used "check_not_empty"
	  instead of "check_satisfiable".

2001-10-17 Wednesday 11:05  Elisa Ricci

	* src/: ConSys.cc (1.6), ConSys.defs.hh (1.8), GenSys.cc (1.6),
	  GenSys.defs.hh (1.11), Polyhedron.cc (1.18), Polyhedron.defs.hh
	  (1.21): In function assign_variable and substitute_variable and
	  in their comments used "expr" instead of "coefficient".  Used the
	  concatenation of two strings in the argument of
	  std::invalid_argument(...).

2001-10-17 Wednesday 11:03  Elisa Ricci

	* src/Generator.inlines.hh (1.5): Used the concatenation of two
	  strings in the argument of std::invalid_argument(...).

2001-10-17 Wednesday 10:14  Elisa Ricci

	* src/Polyhedron.defs.hh (1.20): Erased the temporary debug
	  constructor of a polyhedron.

2001-10-17 Wednesday 09:19  Elisa Ricci

	* src/: ConSys.cc (1.5), ConSys.defs.hh (1.7), GenSys.cc (1.5),
	  GenSys.defs.hh (1.10), Matrix.cc (1.2), Matrix.defs.hh (1.3),
	  Polyhedron.cc (1.17), Polyhedron.defs.hh (1.19), SatMatrix.cc
	  (1.2), SatMatrix.defs.hh (1.4), SatRow.cc (1.2), SatRow.defs.hh
	  (1.3), Status.cc (1.2), Status.defs.hh (1.3): Now, there is not
	  NDEBUG before the function OK.

2001-10-17 Wednesday 07:47  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: ConSys.cc (1.4), GenSys.cc (1.4), Generator.inlines.hh
	  (1.4), Makefile.am (1.7), Polyhedron.cc (1.16), Row.cc (1.2),
	  Row.inlines.hh (1.2): Now Integer and BitSet are in the PPL
	  namespace.  Other namespace-related fixes.  Exception strings
	  improved.

2001-10-16 Tuesday 19:05  Elisa Ricci

	* src/: Constraint.defs.hh (1.6), Generator.defs.hh (1.8): Changed
	  the place of the paragraph "How to build ...".  In the comment of
	  'Generator operator /=' used std::invalid_argument instead of
	  invalid_argument.

2001-10-16 Tuesday 18:59  Elisa Ricci

	* src/Polyhedron.defs.hh (1.18): Used std::invalid_argument instead
	  of invalid_argument in the documentation of exception.

2001-10-16 Tuesday 18:54  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/: definitions.dox (1.9), ppl.sty (1.3): More definitions
	  added to ppl.sty.

	  New definitions used in definitions.dox.  Layout of formula in
	  Minkowski's theorem improved.

2001-10-16 Tuesday 18:23  Elisa Ricci

	* src/: ConSys.defs.hh (1.6), GenSys.defs.hh (1.9), Polyhedron.cc
	  (1.15), Polyhedron.defs.hh (1.17), Status.defs.hh (1.2),
	  conversion.cc (1.2): Used "\Rset" instead of "\mathbb{R}".

2001-10-16 Tuesday 18:18  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Constraint.defs.hh (1.5), LinExpression.defs.hh (1.7),
	  Variable.defs.hh (1.5): Examples on the creation of linear
	  expressions and constraints moved to the right place. Comment
	  about variable names moved into the definition of the class
	  Variable.

2001-10-16 Tuesday 18:06  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.7): The examples on how to build
	  generators moved to the right place.

2001-10-16 Tuesday 17:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: error1.cc (1.2), error2.cc (1.2): There is no point in
	  including print.hh.

2001-10-16 Tuesday 17:33  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/: definitions.dox (1.8), ppl.sty (1.2): Some logic notation
	  and "things that hold by definition" added to ppl.sty \mathbb{R}
	  replaced by \Rset in definitions.dox

2001-10-16 Tuesday 17:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.14), src/Polyhedron.defs.hh (1.16),
	  src/Variable.defs.hh (1.4), src/Variable.inlines.hh (1.2),
	  tests/append.cc (1.3): The argument of
	  Polyhedron::remove_dimensions() has changed again.  Now it is
	  remove_dimensions(const std::set<Variable>& to_be_removed).

2001-10-16 Tuesday 17:24  Elisa Ricci

	* tests/: Makefile.am (1.11), error2.cc (1.1): Added a test for the
	  expception of Polyhedron::assign_variable.

2001-10-16 Tuesday 17:12  Elisa Ricci

	* src/Polyhedron.defs.hh (1.15): Commented the exception for the
	  function assign_variable and substitute_variable.  Now, some
	  important puclic function are in the user manual.

2001-10-16 Tuesday 17:10  Elisa Ricci

	* src/Generator.defs.hh (1.6): Commented the exception of the
	  constructor of a vertex.

2001-10-16 Tuesday 17:09  Elisa Ricci

	* src/Generator.inlines.hh (1.3): A line has the inhomogeneus term
	  equal to zero (like a ray).

2001-10-16 Tuesday 16:40  Elisa Ricci

	* src/GenSys.defs.hh (1.8): Added two examples that show that at
	  least a vertex is necessary in a set of generators.

2001-10-16 Tuesday 15:20  Elisa Ricci

	* src/Polyhedron.cc (1.13): In functions assign_variable and
	  substitute_variable tha case of denominator == 0 is considered.

2001-10-16 Tuesday 15:11  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.defs.hh (1.6), Variable.defs.hh (1.3): No
	  longer using modules (\ingroup, \addgroup, etc.).

2001-10-16 Tuesday 12:26  Elisa Ricci

	* src/Polyhedron.cc (1.12): Erased a print.

2001-10-16 Tuesday 12:23  Elisa Ricci

	* src/: ConSys.cc (1.3), ConSys.defs.hh (1.5), GenSys.cc (1.3),
	  GenSys.defs.hh (1.7): Corrected my previous error.

2001-10-16 Tuesday 12:09  Elisa Ricci

	* src/: Polyhedron.cc (1.11), Polyhedron.defs.hh (1.14): The
	  functions assingn_variable and substitute_variable use a Variable
	  instead od a size_t and a const LinExpression instead of a
	  vector<Integer>.  In this functions, we use a copy of the `coeff'
	  to find the inverse transformations.	Changed the example in
	  according to these changes.

2001-10-16 Tuesday 12:04  Elisa Ricci

	* src/: ConSys.cc (1.2), ConSys.defs.hh (1.4): Now
	  substitute_variable uses LinExpression instead of a
	  vector<Integer>.

2001-10-16 Tuesday 12:03  Elisa Ricci

	* src/: GenSys.cc (1.2), GenSys.defs.hh (1.6): Now
	  assign_variable(..) uses an LinExpression instead of a
	  vector<Integer>.

2001-10-16 Tuesday 11:59  Elisa Ricci

	* src/LinExpression.defs.hh (1.5): Now LinExpression is
	  PPL_INTERNAL Row, instead of private Row.

2001-10-16 Tuesday 10:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.inlines.hh (1.2), tests/Makefile.am (1.10),
	  tests/error1.cc (1.1): Throw an invalid_argument exception if
	  Generator operator /=(const LinExpression& e, const Integer& n)
	  is called with n == 0.  New test program error1.cc to test
	  whether this situation is correctly handled.

2001-10-16 Tuesday 10:54  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.3): New incipit.

2001-10-16 Tuesday 10:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: Matrix.defs.hh (1.2), Row.defs.hh (1.2), SatMatrix.defs.hh
	  (1.3), SatRow.defs.hh (1.2): All the specializations of the
	  std::swap function related to implementation classes are now
	  hidden from the user guide.

2001-10-16 Tuesday 10:53  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.5): Summary changed.  Packager also changed in
	  view of PGP signatures.

2001-10-16 Tuesday 10:20  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.13): The parameter name of the
	  "default" constructor for Polyhedron is `kind'.  Hal the comment
	  was using a different parameter name (`full').

2001-10-16 Tuesday 10:15  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.defs.hh (1.5): In the examples, replaced "\=" by "/=".

2001-10-16 Tuesday 10:13  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.5): In the examples for defining
	  vectors, all "\=" replaced by "/=".

2001-10-16 Tuesday 08:31  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.lsm.in (1.2), src/Polyhedron.cc (1.10),
	  src/Polyhedron.defs.hh (1.12), tests/append.cc (1.2): New
	  interface for remove_dimensions(const std::vector<unsigned int>&
	  to_be_removed).  Note: BitSet is an implementation detail that
	  should not surface in the API.

2001-10-16 Tuesday 07:38  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.4): First attempt at the LSM (Linux Software Map)
	  entry form.

2001-10-15 Monday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.9), append.cc (1.1): A first at the
	  append's analysis test.

2001-10-15 Monday 20:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/randchull1.cc (1.4): Do less work.

2001-10-15 Monday 20:14  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/empty1.cc (1.2): Must return an int, not a bool.

2001-10-15 Monday 18:35  Elisa Ricci

	* src/Polyhedron.cc (1.9): Erased the "assert(OK())" from the
	  function Polyhedron::insert(const Generator&): after an insertion
	  of a generator the polyhedron can be not OK.

2001-10-15 Monday 18:24  Elisa Ricci

	* src/Polyhedron.defs.hh (1.11): Added a new example to show the
	  use of the function Polyhedron::insert(...).

2001-10-15 Monday 18:13  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.8), src/Polyhedron.defs.hh (1.10),
	  tests/Makefile.am (1.8), tests/empty1.cc (1.1): It is not
	  possible to overload bool and unsigned int.  New enumeration
	  Degenerate_Kind added with vales ZERO_DIMENSIONAL and EMPTY.	The
	  constructor Polyhedron(Degenerate_Kind kind = ZERO_DIMENSIONAL)
	  does the expected thing.  The program empty1.cc exemplifies two
	  methods of obtaining an empty polyhedron.

2001-10-15 Monday 18:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.9): ppl.sty must also be distributed.

2001-10-15 Monday 17:14  Elisa Ricci

	* src/: Polyhedron.cc (1.7), Polyhedron.defs.hh (1.9): Now the
	  default constructor of a polyhedron has a default argument.  If
	  `full' is false, it builds an empty polyhedron (it has the flag
	  set to empty); otherwise, if it has the default value (i.e.
	  true), it bulids a zero-dimensional polyhedron.

2001-10-15 Monday 16:44  Elisa Ricci

	* src/Polyhedron.cc (1.6): If we build a polyhedron starting from a
	  matrix of generators with no rows the polyhedron is empty.

2001-10-15 Monday 16:15  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Makefile.am (1.8): Use an absolute path for adding to
	  TEXINPUTS.

2001-10-15 Monday 15:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/.cvsignore (1.3): Here is the Integer class again.

2001-10-15 Monday 15:40  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.inlines.hh (1.2): Multiple inclusion guard added.

2001-10-15 Monday 15:20  Elisa Ricci

	* src/Polyhedron.cc (1.5): In the constructors of a polyhedron that
	  use a system of constraints or a set of generators these matrices
	  must be at least two columns.  In the function
	  remove_dimensions(..) if the matrix of generators does not have
	  at least two columns (i.e num_columns() <= 1) the polyhedron
	  becomes zero-dimensional and so we clear the `con_sys' and
	  `gen_sys'.  In function insert(const Constraint& c) if the
	  polyhedron is zero-dimensional we add also the positivity
	  constraint.  In functions insert(...) it is no longer necessary
	  clear `con_sys' and `gen_sys' before adding a row if the
	  polyhedron is zero-dimensional.  In function OK(), we verify if
	  in a zero-dimensional polyhedron `con_sys' and `gen_sys' have no
	  rows.

2001-10-15 Monday 15:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: Makefile.am (1.7), devref-browse.doxyconf-latex.in (1.4),
	  devref-print.doxyconf-latex.in (1.4), devref.doxyconf-html.in
	  (1.5), devref.tex (1.4), ppl.sty (1.1),
	  user-browse.doxyconf-latex.in (1.4), user-print.doxyconf-latex.in
	  (1.4), user.doxyconf-html.in (1.6), user.tex (1.5): New LaTeX
	  commands can now be defined in ppl.sty and then freely used in
	  the doxygen and LaTeX sources.  This works also when producing
	  HTML pages.

2001-10-15 Monday 13:59  Elisa Ricci

	* src/Polyhedron.defs.hh (1.8): Rewrite a part of the brief
	  description of the class Polyhedron.	Added some more expanation
	  for the examples 5 and 6.

2001-10-15 Monday 12:19  Elisa Ricci

	* src/SatMatrix.defs.hh (1.2): Added a briefly description for the
	  saturation matrix.

2001-10-15 Monday 11:59  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.3): Now we build a relocatable package.

2001-10-15 Monday 11:34  Roberto Bagnara <bagnara@cs.unipr.it>

	* ppl.spec.in (1.2): A first cut at a working RPM spec file.

2001-10-15 Monday 09:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Makefile.am (1.6): It is now possible for the build directory
	  to be the same as the source directory.

2001-10-14 Sunday 22:32  Roberto Bagnara <bagnara@cs.unipr.it>

	* INSTALL (1.2), missing (1.2), mkinstalldirs (1.3): Updated.

2001-10-14 Sunday 21:28  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.8), configure.ac (1.3), doc/Makefile.am (1.6),
	  m4/Makefile.am (1.2), src/Makefile.am (1.5), tests/Makefile.am
	  (1.7): Several packaging bugs have been fixed: now `make
	  distcheck' is OK.

2001-10-14 Sunday 21:26  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref-browse.doxyconf-latex.in (1.3),
	  devref-print.doxyconf-latex.in (1.3), devref.doxyconf-html.in
	  (1.4), user-browse.doxyconf-latex.in (1.3),
	  user-print.doxyconf-latex.in (1.3), user.doxyconf-html.in (1.5):
	  The sysdep directory does not exist anymore.

2001-10-14 Sunday 14:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.7), doc/Makefile.am (1.5), doc/definitions.dox
	  (1.7), doc/devref-browse.doxyconf-latex.in (1.2),
	  doc/devref-print.doxyconf-latex.in (1.2),
	  doc/devref.doxyconf-html.in (1.3), doc/fdl.dox (1.1), doc/fdl.tex
	  (1.1), doc/gfdl.dox (1.2), doc/gpl.tex (1.1), doc/gpl.texi (1.2),
	  doc/gpl.texinfo (1.2), doc/texinfo.tex (1.2),
	  doc/user-browse.doxyconf-latex.in (1.2),
	  doc/user-print.doxyconf-latex.in (1.2), doc/user.doxyconf-html.in
	  (1.4): Documentation reorganized.

2001-10-14 Sunday 11:46  Elisa Ricci

	* src/Polyhedron.cc (1.4): In functions Polyhedron::insert(const
	  Constraint& c) e Polyhedron::insert(const Constraint& c) the case
	  of a zero-dimensional polyhedron is considered.

2001-10-13 Saturday 21:16  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/Polyhedra.texinfo (1.3): Was never meant to be here.

2001-10-13 Saturday 19:06  Roberto Bagnara <bagnara@cs.unipr.it>

	* config.h.in (1.4), configure.ac (1.2): Configuration fixed in
	  various respects.

	  Please note that:

	  - debugging (-g) is ON by default; - standard optimization (-O2)
	  is THE default; - run-time assertions are OFF by default.

2001-10-13 Saturday 19:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.4), ppl.cc (1.2), protect.sed (1.2),
	  restore.sed (1.2): Generation of libppl.a and ppl.hh fixed.

2001-10-13 Saturday 19:03  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.6), inters1.cc (1.3), inters2.cc (1.3),
	  randchull1.cc (1.3): Programs using the PPL need only include
	  ppl.hh.

2001-10-13 Saturday 19:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Polyhedron.cc (1.3), tests/randchull1.cc (1.2): It is now
	  possible to insert a generator into an empty polyhedron.

2001-10-13 Saturday 16:37  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.6), acconfig.h (1.2), acinclude.m4 (1.1),
	  config.guess (1.2), config.h.in (1.3), config.sub (1.2),
	  configure.ac (1.1), configure.in (1.5), doc/Makefile.am (1.4),
	  m4/.cvsignore (1.1), src/Makefile.am (1.3), tests/Makefile.am
	  (1.5): Upgraded to newer versions of autoconf.  Use the new
	  checks for detecting GMP.

2001-10-13 Saturday 12:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.5), m4/Makefile.am (1.1),
	  m4/ac_check_gmp_exceptions.m4 (1.1), m4/ac_check_have_gmp.m4
	  (1.1): New tests to check whether GMP is installed and, if so,
	  whether it was compiled with -fexceptions.

2001-10-13 Saturday 10:56  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.4), Makefile.am (1.4), Makefile.in (1.4),
	  aclocal.m4 (1.2), configure (1.5), stamp-h.in (1.2),
	  doc/.cvsignore (1.1), doc/Makefile.am (1.3), doc/Makefile.in
	  (1.3), src/.cvsignore (1.2), src/Makefile.in (1.3),
	  tests/.cvsignore (1.1), tests/Makefile.in (1.5): Automatically
	  generated  files should not be in the repository and their
	  presence in the directory structure should be ignored.

2001-10-12 Friday 22:27  Roberto Bagnara <bagnara@cs.unipr.it>

	* configure (1.4), configure.in (1.4), doc/Makefile.am (1.2),
	  doc/Makefile.in (1.2), doc/devref-browse.doxyconf-latex.in (1.1),
	  doc/devref-print.doxyconf-latex.in (1.1),
	  doc/devref.doxyconf-pdf.in (1.3), doc/devref.tex (1.3),
	  doc/user-browse.doxyconf-latex.in (1.1),
	  doc/user-print.doxyconf-latex.in (1.1), doc/user.doxyconf-pdf.in
	  (1.4), doc/user.tex (1.4): Several improvements to the
	  documentation.  We now produce docs for printing and docs for
	  browsing

2001-10-12 Friday 18:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.doxyconf-html.in (1.2), devref.doxyconf-pdf.in
	  (1.2), user.doxyconf-html.in (1.3), user.doxyconf-pdf.in (1.3),
	  user.tex (1.3): The project name is "Parma Polyhedra Library",
	  "PPL" for short.

2001-10-12 Friday 18:01  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.4), Makefile.in (1.4), randchull1.cc
	  (1.1): New test computing convex-hulls of random polytopes.

2001-10-12 Friday 17:19  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.6): Title of document changed.  Sections
	  changed so that there are two sections, an introduction to
	  polyhedra and a more advanced section which talks about the PPL
	  implementation.  Comment about vertices differing from rays only
	  in the n+1'th  term moved to before "Valid linear inequalities"
	  paragraph.

2001-10-12 Friday 17:09  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/: Makefile.am (1.2), Makefile.in (1.2): Header file ppl.hh is
	  now guarded against multiple inclusion.

2001-10-12 Friday 17:08  Roberto Bagnara <bagnara@cs.unipr.it>

	* src/Generator.cc (1.2): Bug fixed: a vertex in the origin was
	  printed as "v()" instead of "v(0)".

2001-10-12 Friday 16:51  Elisa Ricci

	* src/: Polyhedron.cc (1.2), Polyhedron.defs.hh (1.7): Added the
	  function Polyhedron::insert(const Generator& g).

2001-10-12 Friday 16:36  Elisa Ricci

	* src/Polyhedron.defs.hh (1.6): Added other two examples: one is
	  for the use of assign_variable(...) and the other is for the use
	  of substitute_variable(...).

2001-10-12 Friday 15:44  Elisa Ricci

	* src/Polyhedron.defs.hh (1.5): Corrected a my error: to build a
	  vertex "/=" is needed instead of "\=".

2001-10-12 Friday 15:12  Elisa Ricci

	* src/Polyhedron.defs.hh (1.4): Added two examples to the comment:
	  one to specify the use of add_dimensions_and_embed(..) and the
	  other to specify the use of add_dimensions_and_project(...).
	  Corrected an error in a formula: now in the comment of
	  convex_hull(...) and convex_hull_lazy(..) there is \f$\cup\f$
	  instead of \f$\union\f$ (that caused an error in Latex).

2001-10-12 Friday 15:07  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/inters2.cc (1.2): Fixed and extended.

2001-10-12 Friday 14:20  Roberto Bagnara <bagnara@cs.unipr.it>

	* tests/: Makefile.am (1.3), Makefile.in (1.3), inters1.cc (1.2),
	  inters2.cc (1.1), print.hh (1.1): print.hh contains functions
	  that are useful for printing polyhedra.  inters1.cc improved.
	  New test inters2.cc computing the intersection of a pyramid with
	  an half-space of variable height, then counting the number of
	  vertices of the resulting polytope (the empty polyhedron, a
	  proper frustum, or a singleton).

2001-10-12 Friday 13:20  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.5): Section on the "equivalence of
	  homogeneous and inhomogeneous systems" (up to the paragraph
	  called "Valid linear inequalities") changed and reworded.  Title
	  of section changed to "Homogeneous systems".

2001-10-12 Friday 10:04  Roberto Bagnara <bagnara@cs.unipr.it>

	* README (1.2), doc/Polyhedra.texinfo (1.2), tests/Makefile.am
	  (1.2), tests/Makefile.in (1.2): Bump copyright year.

2001-10-12 Friday 09:55  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.3), Makefile.in (1.3), config.h.in (1.2),
	  configure (1.3), configure.in (1.3), tests/Makefile.am (1.1),
	  tests/Makefile.in (1.1), tests/inters1.cc (1.1): Infrastructure
	  for the tests directory and `make check'.  inters1.cc is a first
	  example of how test programs could be written.

2001-10-11 Thursday 17:37  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Polyhedron.defs.hh (1.3): Added a backslash to mathbb in the
	  second example.  Removing empty lines that were causing Examples
	  1 and 2 to end prematurely.

2001-10-11 Thursday 17:00  Elisa Ricci

	* src/Polyhedron.defs.hh (1.2): Added two examples to the comment:
	  one is for the construction of a square using the constraints and
	  the generators. The other is for the construction of an
	  half-strip using the constraints and the generators.

2001-10-11 Thursday 16:57  Elisa Ricci

	* src/GenSys.defs.hh (1.4): Added another example for the
	  construction of a set of generators (it builds an half-strip).

2001-10-11 Thursday 16:56  Elisa Ricci

	* src/ConSys.defs.hh (1.3): Added another example for the
	  constraction of a system of constraints (it builds an
	  half-strip).

2001-10-11 Thursday 16:41  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.4): The paragraph "The Minkowski's
	  theorem" renamed to	"Minkowski's theorem.  The condition
	  "rank(A) = n" changed to   "where A is a matrix of rank n".  The
	  note following the definition is reworded so that the
	  conditions are not bracketed.  "Linear equalities and
	  inequalities" has been   changed to "constraints".  "positive
	  multiples of each inequality and ray" has been    changed to
	  "positive multiples of each constraint and ray".  The word "the"
	  inserted where necessary.

	  The paragraph "The Weil's theorem" renamed to "Weil's theorem.

2001-10-11 Thursday 16:07  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Constraint.defs.hh (1.4): In the examples, variable "cs"
	  renamed into "inequal" and "equal".

2001-10-11 Thursday 15:49  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.3): In the definition of rays:  P is
	  defined before P_0;  A and b are defined;  inserted "any point"
	  before r; The comment that a ray is the direction in which P is
	  infinite, moved from within the statement of the proposition to
	  before the proposition and reworded.

	  In the definition of lines, wording improved.  Comment relating
	  opposite rays with lines made into a separate paragraph. It is
	  not part of the definition.

2001-10-11 Thursday 14:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.defs.hh (1.4): In the first two examples,
	  variable z now has index 2 (using index 5 was correct, but a bit
	  misleading).

2001-10-11 Thursday 14:33  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.4): IN the first example, variable "g"
	  renamed as "line".

2001-10-11 Thursday 14:32  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/Generator.defs.hh (1.3): Examples modified:  - using more
	  meaningful names (line, ray and vertex) for Generator variables;
	  - explained that the first argument of operators | and ^ is
	  meaningless;	- explained how to use the second argument of /= to
	  obtain vertices    with non-integral coefficients.

2001-10-11 Thursday 14:28  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/GenSys.defs.hh (1.3): In the first example, Variable y(0)
	  changed in Variable y(1) to avoid dimension clash with Variable
	  x(0).  In the second example, the computation of the past-the-end
	  iterator moved outside the for-loop.

2001-10-11 Thursday 13:53  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: ConSys.defs.hh (1.2), Constraint.defs.hh (1.3),
	  Constraint.inlines.hh (1.2): Friend members building a constraint
	  using operators < and > removed.  Example changed accordingly.
	  In the example on the use of iterators for ConSys, the
	  past-the-end iterator is now computed only once before the
	  for-loop.

2001-10-11 Thursday 13:49  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: user.doxyconf-html.in (1.2), user.doxyconf-pdf.in (1.2): Do
	  not show inheritance graphs or diagrams.  Do not show a thousands
	  times that the only PPL header file is ppl.hh.

2001-10-11 Thursday 13:44  Roberto Bagnara <bagnara@cs.unipr.it>

	* doc/: devref.tex (1.2), user.tex (1.2): Tatiana's email address
	  fixed.  Better titles.

2001-10-11 Thursday 13:03  Patricia M. Hill <hill@comp.leeds.ac.uk>

	* doc/definitions.dox (1.2): In the definition of the combinations,
	  the p_1,...,p_k are changed to x_1,...,x_k.  In the definition of
	  scalar product: "vector" is changed to "vectors".  In the
	  definition of polyhedra there are a number of changes to
	  notation, the definitions of the notation and to the wording.

2001-10-11 Thursday 12:38  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/: LinExpression.defs.hh (1.3), Variable.defs.hh (1.2): Some
	  errors (just introduced by me) removed.  Methods of class
	  Variable added to group LinExpression.

2001-10-11 Thursday 12:00  Enea Zaffanella <zaffanella@cs.unipr.it>

	* src/LinExpression.defs.hh (1.2): A few changes in the example.

2001-10-11 Thursday 11:22  Elisa Ricci

	* src/Generator.defs.hh (1.2): Added three examples: one for the
	  construction of a line, one for the construction of a ray and the
	  other for the construction of a vertex.

2001-10-11 Thursday 11:19  Elisa Ricci

	* src/GenSys.defs.hh (1.2): Added an example in the comment: it is
	  useful to specify the construction of a set of generators.

2001-10-11 Thursday 11:16  Elisa Ricci

	* src/Constraint.defs.hh (1.2): Added two examples in the comment:
	  one for the building of an inequality and the other for the
	  building of an equality.

2001-10-11 Thursday 08:39  Roberto Bagnara <bagnara@cs.unipr.it>

	* Makefile.am (1.2), Makefile.in (1.2), configure (1.2),
	  configure.in (1.2): Disable the test directory.

2001-10-11 Thursday 08:33  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.3), src/.cvsignore (1.1): My mistake: BitSet and
	  Integer are subdirectories of src.

2001-10-11 Thursday 08:29  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.2): Ignore the BitSet and Integer subdirectories:
	  they must be here and must be ignored by CVS.

2001-10-10 Wednesday 21:50  Roberto Bagnara <bagnara@cs.unipr.it>

	* mkinstalldirs (1.2): $Id tag removed.

2001-10-10 Wednesday 21:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.1.1.1), AUTHORS (1.1.1.1), COPYING (1.1.1.1),
	  ChangeLog (1.1.1.1), INSTALL (1.1.1.1), Makefile.am (1.1.1.1),
	  Makefile.in (1.1.1.1), NEWS (1.1.1.1), README (1.1.1.1), TODO
	  (1.1.1.1), acconfig.h (1.1.1.1), aclocal.m4 (1.1.1.1),
	  config.guess (1.1.1.1), config.h.in (1.1.1.1), config.sub
	  (1.1.1.1), configure (1.1.1.1), configure.in (1.1.1.1), depcomp
	  (1.1.1.1), install-sh (1.1.1.1), missing (1.1.1.1), mkinstalldirs
	  (1.1.1.1), ppl.lsm.in (1.1.1.1), ppl.spec.in (1.1.1.1),
	  stamp-h.in (1.1.1.1), doc/Makefile.am (1.1.1.1), doc/Makefile.in
	  (1.1.1.1), doc/Polyhedra.texinfo (1.1.1.1), doc/definitions.dox
	  (1.1.1.1), doc/devref.doxyconf-html.in (1.1.1.1),
	  doc/devref.doxyconf-pdf.in (1.1.1.1), doc/devref.tex (1.1.1.1),
	  doc/gfdl.dox (1.1.1.1), doc/gpl.dox (1.1.1.1), doc/gpl.texi
	  (1.1.1.1), doc/gpl.texinfo (1.1.1.1), doc/texinfo.tex (1.1.1.1),
	  doc/user.doxyconf-html.in (1.1.1.1), doc/user.doxyconf-pdf.in
	  (1.1.1.1), doc/user.tex (1.1.1.1), src/ConSys.cc (1.1.1.1),
	  src/ConSys.defs.hh (1.1.1.1), src/ConSys.inlines.hh (1.1.1.1),
	  src/ConSys.types.hh (1.1.1.1), src/Constraint.cc (1.1.1.1),
	  src/Constraint.defs.hh (1.1.1.1), src/Constraint.inlines.hh
	  (1.1.1.1), src/Constraint.types.hh (1.1.1.1), src/GenSys.cc
	  (1.1.1.1), src/GenSys.defs.hh (1.1.1.1), src/GenSys.inlines.hh
	  (1.1.1.1), src/GenSys.types.hh (1.1.1.1), src/Generator.cc
	  (1.1.1.1), src/Generator.defs.hh (1.1.1.1),
	  src/Generator.inlines.hh (1.1.1.1), src/Generator.types.hh
	  (1.1.1.1), src/LinExpression.cc (1.1.1.1),
	  src/LinExpression.defs.hh (1.1.1.1), src/LinExpression.inlines.hh
	  (1.1.1.1), src/LinExpression.types.hh (1.1.1.1), src/Makefile.am
	  (1.1.1.1), src/Makefile.in (1.1.1.1), src/Matrix.cc (1.1.1.1),
	  src/Matrix.defs.hh (1.1.1.1), src/Matrix.inlines.hh (1.1.1.1),
	  src/Matrix.types.hh (1.1.1.1), src/Polyhedron.cc (1.1.1.1),
	  src/Polyhedron.defs.hh (1.1.1.1), src/Polyhedron.inlines.hh
	  (1.1.1.1), src/Polyhedron.types.hh (1.1.1.1), src/Row.cc
	  (1.1.1.1), src/Row.defs.hh (1.1.1.1), src/Row.inlines.hh
	  (1.1.1.1), src/Row.types.hh (1.1.1.1), src/SatMatrix.cc
	  (1.1.1.1), src/SatMatrix.defs.hh (1.1.1.1),
	  src/SatMatrix.inlines.hh (1.1.1.1), src/SatMatrix.types.hh
	  (1.1.1.1), src/SatRow.cc (1.1.1.1), src/SatRow.defs.hh (1.1.1.1),
	  src/SatRow.inlines.hh (1.1.1.1), src/SatRow.types.hh (1.1.1.1),
	  src/Status.cc (1.1.1.1), src/Status.defs.hh (1.1.1.1),
	  src/Status.inlines.hh (1.1.1.1), src/Status.types.hh (1.1.1.1),
	  src/Variable.cc (1.1.1.1), src/Variable.defs.hh (1.1.1.1),
	  src/Variable.inlines.hh (1.1.1.1), src/Variable.types.hh
	  (1.1.1.1), src/conversion.cc (1.1.1.1), src/globals.cc (1.1.1.1),
	  src/globals.hh (1.1.1.1), src/maxmin.hh (1.1.1.1),
	  src/minimize.cc (1.1.1.1), src/ppl.cc (1.1.1.1), src/protect.sed
	  (1.1.1.1), src/restore.sed (1.1.1.1), src/simplify.cc (1.1.1.1):
	  Imported into the new repository.

2001-10-10 Wednesday 21:45  Roberto Bagnara <bagnara@cs.unipr.it>

	* .cvsignore (1.1), AUTHORS (1.1), COPYING (1.1), ChangeLog (1.1),
	  INSTALL (1.1), Makefile.am (1.1), Makefile.in (1.1), NEWS (1.1),
	  README (1.1), TODO (1.1), acconfig.h (1.1), aclocal.m4 (1.1),
	  config.guess (1.1), config.h.in (1.1), config.sub (1.1),
	  configure (1.1), configure.in (1.1), depcomp (1.1), install-sh
	  (1.1), missing (1.1), mkinstalldirs (1.1), ppl.lsm.in (1.1),
	  ppl.spec.in (1.1), stamp-h.in (1.1), doc/Makefile.am (1.1),
	  doc/Makefile.in (1.1), doc/Polyhedra.texinfo (1.1),
	  doc/definitions.dox (1.1), doc/devref.doxyconf-html.in (1.1),
	  doc/devref.doxyconf-pdf.in (1.1), doc/devref.tex (1.1),
	  doc/gfdl.dox (1.1), doc/gpl.dox (1.1), doc/gpl.texi (1.1),
	  doc/gpl.texinfo (1.1), doc/texinfo.tex (1.1),
	  doc/user.doxyconf-html.in (1.1), doc/user.doxyconf-pdf.in (1.1),
	  doc/user.tex (1.1), src/ConSys.cc (1.1), src/ConSys.defs.hh
	  (1.1), src/ConSys.inlines.hh (1.1), src/ConSys.types.hh (1.1),
	  src/Constraint.cc (1.1), src/Constraint.defs.hh (1.1),
	  src/Constraint.inlines.hh (1.1), src/Constraint.types.hh (1.1),
	  src/GenSys.cc (1.1), src/GenSys.defs.hh (1.1),
	  src/GenSys.inlines.hh (1.1), src/GenSys.types.hh (1.1),
	  src/Generator.cc (1.1), src/Generator.defs.hh (1.1),
	  src/Generator.inlines.hh (1.1), src/Generator.types.hh (1.1),
	  src/LinExpression.cc (1.1), src/LinExpression.defs.hh (1.1),
	  src/LinExpression.inlines.hh (1.1), src/LinExpression.types.hh
	  (1.1), src/Makefile.am (1.1), src/Makefile.in (1.1),
	  src/Matrix.cc (1.1), src/Matrix.defs.hh (1.1),
	  src/Matrix.inlines.hh (1.1), src/Matrix.types.hh (1.1),
	  src/Polyhedron.cc (1.1), src/Polyhedron.defs.hh (1.1),
	  src/Polyhedron.inlines.hh (1.1), src/Polyhedron.types.hh (1.1),
	  src/Row.cc (1.1), src/Row.defs.hh (1.1), src/Row.inlines.hh
	  (1.1), src/Row.types.hh (1.1), src/SatMatrix.cc (1.1),
	  src/SatMatrix.defs.hh (1.1), src/SatMatrix.inlines.hh (1.1),
	  src/SatMatrix.types.hh (1.1), src/SatRow.cc (1.1),
	  src/SatRow.defs.hh (1.1), src/SatRow.inlines.hh (1.1),
	  src/SatRow.types.hh (1.1), src/Status.cc (1.1),
	  src/Status.defs.hh (1.1), src/Status.inlines.hh (1.1),
	  src/Status.types.hh (1.1), src/Variable.cc (1.1),
	  src/Variable.defs.hh (1.1), src/Variable.inlines.hh (1.1),
	  src/Variable.types.hh (1.1), src/conversion.cc (1.1),
	  src/globals.cc (1.1), src/globals.hh (1.1), src/maxmin.hh (1.1),
	  src/minimize.cc (1.1), src/ppl.cc (1.1), src/protect.sed (1.1),
	  src/restore.sed (1.1), src/simplify.cc (1.1): Initial revision

