;;; Compiled by f2cl version 2.0 beta Date: 2006/12/21 03:42:11 
;;; Using Lisp CMU Common Lisp CVS Head 2006-12-02 00:15:46 (19D)
;;; 
;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
;;;           (:coerce-assigns :as-needed) (:array-type ':array)
;;;           (:array-slicing t) (:declare-common nil)
;;;           (:float-format double-float))

(in-package :lapack)


(let* ((one 1.0))
  (declare (type (double-float 1.0 1.0) one))
  (defun dgetrf (m n a lda ipiv info)
    (declare (type (array f2cl-lib:integer4 (*)) ipiv)
             (type (array double-float (*)) a)
             (type (f2cl-lib:integer4) info lda n m))
    (f2cl-lib:with-multi-array-data
        ((a double-float a-%data% a-%offset%)
         (ipiv f2cl-lib:integer4 ipiv-%data% ipiv-%offset%))
      (prog ((i 0) (iinfo 0) (j 0) (jb 0) (nb 0))
        (declare (type (f2cl-lib:integer4) i iinfo j jb nb))
        (setf info 0)
        (cond
          ((< m 0)
           (setf info -1))
          ((< n 0)
           (setf info -2))
          ((< lda (max (the f2cl-lib:integer4 1) (the f2cl-lib:integer4 m)))
           (setf info -4)))
        (cond
          ((/= info 0)
           (xerbla "DGETRF" (f2cl-lib:int-sub info))
           (go end_label)))
        (if (or (= m 0) (= n 0)) (go end_label))
        (setf nb (ilaenv 1 "DGETRF" " " m n -1 -1))
        (cond
          ((or (<= nb 1)
               (>= nb
                   (min (the f2cl-lib:integer4 m) (the f2cl-lib:integer4 n))))
           (multiple-value-bind (var-0 var-1 var-2 var-3 var-4 var-5)
               (dgetf2 m n a lda ipiv info)
             (declare (ignore var-0 var-1 var-2 var-3 var-4))
             (setf info var-5)))
          (t
           (f2cl-lib:fdo (j 1 (f2cl-lib:int-add j nb))
                         ((> j
                             (min (the f2cl-lib:integer4 m)
                                  (the f2cl-lib:integer4 n)))
                          nil)
             (tagbody
               (setf jb
                       (min
                        (the f2cl-lib:integer4
                             (f2cl-lib:int-add
                              (f2cl-lib:int-sub
                               (min (the f2cl-lib:integer4 m)
                                    (the f2cl-lib:integer4 n))
                               j)
                              1))
                        (the f2cl-lib:integer4 nb)))
               (multiple-value-bind (var-0 var-1 var-2 var-3 var-4 var-5)
                   (dgetf2 (f2cl-lib:int-add (f2cl-lib:int-sub m j) 1) jb
                    (f2cl-lib:array-slice a double-float (j j) ((1 lda) (1 *)))
                    lda
                    (f2cl-lib:array-slice ipiv f2cl-lib:integer4 (j) ((1 *)))
                    iinfo)
                 (declare (ignore var-0 var-1 var-2 var-3 var-4))
                 (setf iinfo var-5))
               (if (and (= info 0) (> iinfo 0))
                   (setf info (f2cl-lib:int-sub (f2cl-lib:int-add iinfo j) 1)))
               (f2cl-lib:fdo (i j (f2cl-lib:int-add i 1))
                             ((> i
                                 (min (the f2cl-lib:integer4 m)
                                      (the f2cl-lib:integer4
                                           (f2cl-lib:int-add j
                                                             jb
                                                             (f2cl-lib:int-sub
                                                              1)))))
                              nil)
                 (tagbody
                   (setf (f2cl-lib:fref ipiv-%data% (i) ((1 *)) ipiv-%offset%)
                           (f2cl-lib:int-add (f2cl-lib:int-sub j 1)
                                             (f2cl-lib:fref ipiv-%data%
                                                            (i)
                                                            ((1 *))
                                                            ipiv-%offset%)))
                  label10))
               (dlaswp (f2cl-lib:int-sub j 1) a lda j
                (f2cl-lib:int-sub (f2cl-lib:int-add j jb) 1) ipiv 1)
               (cond
                 ((<= (f2cl-lib:int-add j jb) n)
                  (dlaswp (f2cl-lib:int-add (f2cl-lib:int-sub n j jb) 1)
                   (f2cl-lib:array-slice a
                                         double-float
                                         (1 (f2cl-lib:int-add j jb))
                                         ((1 lda) (1 *)))
                   lda j (f2cl-lib:int-sub (f2cl-lib:int-add j jb) 1) ipiv 1)
                  (dtrsm "Left" "Lower" "No transpose" "Unit" jb
                   (f2cl-lib:int-add (f2cl-lib:int-sub n j jb) 1) one
                   (f2cl-lib:array-slice a double-float (j j) ((1 lda) (1 *)))
                   lda
                   (f2cl-lib:array-slice a
                                         double-float
                                         (j (f2cl-lib:int-add j jb))
                                         ((1 lda) (1 *)))
                   lda)
                  (cond
                    ((<= (f2cl-lib:int-add j jb) m)
                     (dgemm "No transpose" "No transpose"
                      (f2cl-lib:int-add (f2cl-lib:int-sub m j jb) 1)
                      (f2cl-lib:int-add (f2cl-lib:int-sub n j jb) 1) jb (- one)
                      (f2cl-lib:array-slice a
                                            double-float
                                            ((+ j jb) j)
                                            ((1 lda) (1 *)))
                      lda
                      (f2cl-lib:array-slice a
                                            double-float
                                            (j (f2cl-lib:int-add j jb))
                                            ((1 lda) (1 *)))
                      lda one
                      (f2cl-lib:array-slice a
                                            double-float
                                            ((+ j jb) (f2cl-lib:int-add j jb))
                                            ((1 lda) (1 *)))
                      lda)))))
              label20))))
        (go end_label)
       end_label
        (return (values nil nil nil nil nil info))))))

(in-package #-gcl #:cl-user #+gcl "CL-USER")
#+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
(eval-when (:load-toplevel :compile-toplevel :execute)
  (setf (gethash 'fortran-to-lisp::dgetrf
                 fortran-to-lisp::*f2cl-function-info*)
          (fortran-to-lisp::make-f2cl-finfo
           :arg-types '((fortran-to-lisp::integer4) (fortran-to-lisp::integer4)
                        (array double-float (*)) (fortran-to-lisp::integer4)
                        (array fortran-to-lisp::integer4 (*))
                        (fortran-to-lisp::integer4))
           :return-values '(nil nil nil nil nil fortran-to-lisp::info)
           :calls '(fortran-to-lisp::dgemm fortran-to-lisp::dtrsm
                    fortran-to-lisp::dlaswp fortran-to-lisp::dgetf2
                    fortran-to-lisp::ilaenv fortran-to-lisp::xerbla))))

