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math.h
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C/C++ Source or Header
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1992-07-20
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#ifndef _MATH_H
#define _MATH_H
/************************************************************************
* *
* N O T I C E *
* *
* Copyright Abandoned, 1987, Fred Fish *
* *
* This previously copyrighted work has been placed into the *
* public domain by the author (Fred Fish) and may be freely used *
* for any purpose, private or commercial. I would appreciate *
* it, as a courtesy, if this notice is left in all copies and *
* derivative works. Thank you, and enjoy... *
* *
* The author makes no warranty of any kind with respect to this *
* product and explicitly disclaims any implied warranties of *
* merchantability or fitness for any particular purpose. *
* *
************************************************************************
*/
/*
* FILE
*
* math.h include file for users of portable math library
*
* SYNOPSIS
*
* #include <math.h>
*
* DESCRIPTION
*
* This file should be included in any user compilation module
* which accesses routines from the Portable Math Library (PML).
*
*/
#ifndef _COMPILER_H
#include <compiler.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __STRICT_ANSI__
/*
* Create the type "COMPLEX". This is an obvious extension that I
* hope becomes a part of standard C someday.
*
*/
typedef struct cmplx { /* Complex structure */
double real; /* Real part */
double imag; /* Imaginary part */
} COMPLEX;
/* exceptions ++jrb */
typedef enum {
DOMAIN = 1,
SING = 2,
OVERFLOW = 3,
UNDERFLOW = 4,
TLOSS = 5,
PLOSS = 6
} exception_type;
struct exception {
exception_type type; /* exception type */
char *name; /* function in which it occured */
double arg1; /* an arg */
double arg2; /* another arg */
double retval; /* val to return */
};
#define M_LN2 0.69314718055994530942
#define M_PI 3.14159265358979323846
#define M_SQRT2 1.41421356237309504880
#define M_E 2.7182818284590452354
#define M_LOG2E 1.4426950408889634074
#define M_LOG10E 0.43429448190325182765
#define M_LN10 2.30258509299404568402
#define M_PI_2 1.57079632679489661923
#define M_PI_4 0.78539816339744830962
#define M_1_PI 0.31830988618379067154
#define M_2_PI 0.63661977236758134308
#define M_2_SQRTPI 1.12837916709551257390
#define M_SQRT1_2 0.70710678118654752440
#endif /* __STRICT_ANSI__ */
extern const double _infinitydf; /* in normdf.cpp */
#define HUGE_VAL (_infinitydf)
#define HUGE HUGE_VAL
#ifdef _M68881
#include <math-68881.h>
#endif
#ifdef __GNUC__
# ifndef __cplusplus
# ifndef max
# define max(x,y) ({typeof(x) _x=(x); typeof(y) _y=(y); if (_x>_y) _y=_x; _y;})
# define min(x,y) ({typeof(x) _x=(x); typeof(y) _y=(y); if (_x<_y) _y=_x; _y;})
# endif
# endif
#endif
#ifndef _M68881
__EXTERN double acos __PROTO((double));
__EXTERN double asin __PROTO((double));
__EXTERN double atan __PROTO((double));
__EXTERN double atanh __PROTO((double));
__EXTERN double cos __PROTO((double));
__EXTERN double cosh __PROTO((double));
__EXTERN double fabs __PROTO((double));
__EXTERN double dabs __PROTO((double));
__EXTERN double exp __PROTO((double));
__EXTERN double log __PROTO((double));
__EXTERN double log10 __PROTO((double));
__EXTERN double fmod __PROTO((double, double));
__EXTERN double sin __PROTO((double));
__EXTERN double sinh __PROTO((double));
__EXTERN double sqrt __PROTO((double));
__EXTERN double hypot __PROTO((double, double));
__EXTERN double tan __PROTO((double));
__EXTERN double tanh __PROTO((double));
__EXTERN double floor __PROTO((double));
__EXTERN double ceil __PROTO((double));
__EXTERN double rint __PROTO((double));
__EXTERN double acosh __PROTO((double));
__EXTERN double asinh __PROTO((double));
__EXTERN double atan2 __PROTO((double, double));
__EXTERN double pow __PROTO((double, double));
#endif
#ifndef __STRICT_ANSI__
#ifdef _M68881
# define dabs(x) fabs(x)
#endif
__EXTERN double copysign __PROTO((double, double));
__EXTERN int matherr __PROTO((struct exception *));
__EXTERN double cabs __PROTO((COMPLEX));
__EXTERN COMPLEX cmult __PROTO((COMPLEX, COMPLEX));
__EXTERN COMPLEX csqrt __PROTO((COMPLEX));
#ifndef __GNUG__
__EXTERN COMPLEX clog __PROTO((COMPLEX));
#endif
__EXTERN COMPLEX cacos __PROTO((COMPLEX));
__EXTERN COMPLEX cadd __PROTO((COMPLEX,COMPLEX));
__EXTERN COMPLEX casin __PROTO((COMPLEX));
__EXTERN COMPLEX catan __PROTO((COMPLEX));
__EXTERN COMPLEX ccosh __PROTO((COMPLEX));
__EXTERN COMPLEX crcp __PROTO((COMPLEX));
__EXTERN COMPLEX csinh __PROTO((COMPLEX));
__EXTERN COMPLEX ctan __PROTO((COMPLEX));
__EXTERN COMPLEX ctanh __PROTO((COMPLEX));
__EXTERN COMPLEX cexp __PROTO((COMPLEX));
__EXTERN COMPLEX ccos __PROTO((COMPLEX));
__EXTERN COMPLEX csin __PROTO((COMPLEX));
__EXTERN COMPLEX cdiv __PROTO((COMPLEX, COMPLEX));
__EXTERN COMPLEX csubt __PROTO((COMPLEX,COMPLEX));
__EXTERN int pmlcfs __PROTO((int, int));
__EXTERN int pmlcnt __PROTO((void));
__EXTERN int pmlerr __PROTO((int));
__EXTERN int pmllim __PROTO((int));
__EXTERN int pmlsfs __PROTO((int, int));
__EXTERN double poly __PROTO((int, double *, double));
#endif /* __STRICT_ANSI__ */
#ifndef _M68881
__EXTERN double modf __PROTO((double, double *));
__EXTERN double ldexp __PROTO((double, int));
__EXTERN double frexp __PROTO((double, int *));
#endif /* !_M68881 */
#ifdef __cplusplus
}
#endif
#endif /* _MATH_H */