/*							mconf.h
 *
 *	Common include file for math routines
 *
 *
 *
 * SYNOPSIS:
 *
 * #include "mconf.h"
 *
 *
 *
 * DESCRIPTION:
 *
 * This file contains definitions for error codes that are
 * passed to the common error handling routine mtherr()
 * (which see).
 *
 * The file also includes a conditional assembly definition
 * for the type of computer arithmetic (IEEE, DEC, Motorola
 * IEEE, or UNKnown).
 * 
 * For Digital Equipment PDP-11 and VAX computers, certain
 * IBM systems, and others that use numbers with a 56-bit
 * significand, the symbol DEC should be defined.  In this
 * mode, most floating point constants are given as arrays
 * of octal integers to eliminate decimal to binary conversion
 * errors that might be introduced by the compiler.
 *
 * For little-endian computers, such as IBM PC, that follow the
 * IEEE Standard for Binary Floating Point Arithmetic (ANSI/IEEE
 * Std 754-1985), the symbol IBMPC should be defined.  These
 * numbers have 53-bit significands.  In this mode, constants
 * are provided as arrays of hexadecimal 16 bit integers.
 *
 * Big-endian IEEE format is denoted MIEEE.  On some RISC
 * systems such as Sun SPARC, double precision constants
 * must be stored on 8-byte address boundaries.  Since integer
 * arrays may be aligned differently, the MIEEE configuration
 * may fail on such machines.
 *
 * To accommodate other types of computer arithmetic, all
 * constants are also provided in a normal decimal radix
 * which one can hope are correctly converted to a suitable
 * format by the available C language compiler.  To invoke
 * this mode, define the symbol UNK.
 *
 * An important difference among these modes is a predefined
 * set of machine arithmetic constants for each.  The numbers
 * MACHEP (the machine roundoff error), MAXNUM (largest number
 * represented), and several other parameters are preset by
 * the configuration symbol.  Check the file const.c to
 * ensure that these values are correct for your computer.
 *
 * Configurations NANS, INFINITIES, MINUSZERO, and DENORMAL
 * may fail on many systems.  Verify that they are supposed
 * to work on your computer.
 */

/*
Cephes Math Library Release 2.3:  June, 1995
Copyright 1984, 1987, 1989, 1995 by Stephen L. Moshier
*/

#ifndef __MCONF_H__
#define __MCONF_H__

/* Constant definitions for math error conditions
 */

#define MATHERR_DOMAIN		1	/* argument domain error */
#define MATHERR_SING		2	/* argument singularity */
#define MATHERR_OVERFLOW	3	/* overflow range error */
#define MATHERR_UNDERFLOW	4	/* underflow range error */
#define MATHERR_TLOSS		5	/* total loss of precision */
#define MATHERR_PLOSS		6	/* partial loss of precision */

#define MATHERR_EDOM		33
#define MATHERR_ERANGE		34

#include <math.h>
#include "specfns_protos.h"

#include  "guppi-defs.h"

BEGIN_GUPPI_DECLS

/* Type of computer arithmetic */
/* PDP-11, Pro350, VAX:
 */
/* #define DEC 1 */
/* Intel IEEE, low order words come first:
 */
/* #define IBMPC 1 */
/* Motorola IEEE, high order words come first
 * (Sun 680x0 workstation):
 */
/* #define MIEEE 1 */
/* UNKnown arithmetic, invokes coefficients given in
 * normal decimal format.  Beware of range boundary
 * problems (MACHEP, MAXLOG, etc. in const.c) and
 * roundoff problems in pow.c:
 * (Sun SPARCstation)
 */
#define UNK 1
/* If you define UNK, then be sure to set BIGENDIAN properly. */
#define BIGENDIAN 0
/* Define this `volatile' if your compiler thinks
 * that floating point arithmetic obeys the associative
 * and distributive laws.  It will defeat some optimizations
 * (but probably not enough of them).
 *
 * #define VOLATILE volatile
 */
#define VOLATILE
/* For 12-byte long doubles on an i386, pad a 16-bit short 0
 * to the end of real constants initialized by integer arrays.
 *
 * #define XPD 0,
 *
 * Otherwise, the type is 10 bytes long and XPD should be
 * defined blank (e.g., Microsoft C).
 *
 * #define XPD
 */
#define XPD 0,
/* Define to support tiny denormal numbers, else undefine. */
#define DENORMAL 1
/* Define to ask for infinity support, else undefine. */
/* #define INFINITIES 1 */
/* Define to ask for support of numbers that are Not-a-Number,
   else undefine.  This may automatically define INFINITIES in some files. */
/* #define NANS 1 */
/* Define to distinguish between -0.0 and +0.0.  */
/* #define MINUSZERO 1 */
double log1p (double x);
double expm1 (double x);
double cosm1 (double x);

int mtherr (const char *fctnam, int code);

END_GUPPI_DECLS

#endif /* __MCONF_H__ */

/* $Id: mconf.h,v 1.5 2001/11/19 05:40:45 trow Exp $ */
