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NetBSD/include/math.h

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/* $NetBSD: math.h,v 1.37 2004/07/01 16:09:21 drochner Exp $ */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* @(#)fdlibm.h 5.1 93/09/24
*/
#ifndef _MATH_H_
#define _MATH_H_
#include <sys/cdefs.h>
#include <sys/featuretest.h>
union __float_u {
unsigned char __dummy[sizeof(float)];
float __val;
};
union __double_u {
unsigned char __dummy[sizeof(double)];
double __val;
};
union __long_double_u {
unsigned char __dummy[sizeof(long double)];
long double __val;
};
#include <machine/math.h> /* may use __float_u, __double_u,
or __long_double_u */
#ifdef __HAVE_LONG_DOUBLE
#define __fpmacro_unary_floating(__name, __arg0) \
/* LINTED */ \
((sizeof (__arg0) == sizeof (float)) \
? __ ## __name ## f (__arg0) \
: (sizeof (__arg0) == sizeof (double)) \
? __ ## __name ## d (__arg0) \
: __ ## __name ## l (__arg0))
#else
#define __fpmacro_unary_floating(__name, __arg0) \
/* LINTED */ \
((sizeof (__arg0) == sizeof (float)) \
? __ ## __name ## f (__arg0) \
: __ ## __name ## d (__arg0))
#endif /* __HAVE_LONG_DOUBLE */
/*
* ANSI/POSIX
*/
/* 7.12#3 HUGE_VAL, HUGELF, HUGE_VALL */
extern __const union __double_u __infinity;
#define HUGE_VAL __infinity.__val
/*
* ISO C99
*/
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
!defined(_XOPEN_SOURCE) || \
((__STDC_VERSION__ - 0) >= 199901L) || \
((_POSIX_C_SOURCE - 0) >= 200112L) || \
((_XOPEN_SOURCE - 0) >= 600) || \
defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
/* 7.12#3 HUGE_VAL, HUGELF, HUGE_VALL */
extern __const union __float_u __infinityf;
#define HUGE_VALF __infinityf.__val
extern __const union __long_double_u __infinityl;
#define HUGE_VALL __infinityl.__val
/* 7.12#4 INFINITY */
#ifdef __INFINITY
#define INFINITY __INFINITY /* float constant which overflows */
#else
#define INFINITY HUGE_VALF /* positive infinity */
#endif /* __INFINITY */
/* 7.12#5 NAN: a quiet NaN, if supported */
#ifdef __HAVE_NANF
extern __const union __float_u __nanf;
#define NAN __nanf.__val
#endif /* __HAVE_NANF */
/* 7.12#6 number classification macros */
#define FP_INFINITE 0x00
#define FP_NAN 0x01
#define FP_NORMAL 0x02
#define FP_SUBNORMAL 0x03
#define FP_ZERO 0x04
/* NetBSD extensions */
#define _FP_LOMD 0x80 /* range for machine-specific classes */
#define _FP_HIMD 0xff
#endif /* !_ANSI_SOURCE && ... */
/*
* XOPEN/SVID
*/
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
#define M_E 2.7182818284590452354 /* e */
#define M_LOG2E 1.4426950408889634074 /* log 2e */
#define M_LOG10E 0.43429448190325182765 /* log 10e */
#define M_LN2 0.69314718055994530942 /* log e2 */
#define M_LN10 2.30258509299404568402 /* log e10 */
#define M_PI 3.14159265358979323846 /* pi */
#define M_PI_2 1.57079632679489661923 /* pi/2 */
#define M_PI_4 0.78539816339744830962 /* pi/4 */
#define M_1_PI 0.31830988618379067154 /* 1/pi */
#define M_2_PI 0.63661977236758134308 /* 2/pi */
#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#define MAXFLOAT ((float)3.40282346638528860e+38)
extern int signgam;
#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
#if defined(_NETBSD_SOURCE)
enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
#define _LIB_VERSION_TYPE enum fdversion
#define _LIB_VERSION _fdlib_version
/* if global variable _LIB_VERSION is not desirable, one may
* change the following to be a constant by:
* #define _LIB_VERSION_TYPE const enum version
* In that case, after one initializes the value _LIB_VERSION (see
* s_lib_version.c) during compile time, it cannot be modified
* in the middle of a program
*/
extern _LIB_VERSION_TYPE _LIB_VERSION;
#define _IEEE_ fdlibm_ieee
#define _SVID_ fdlibm_svid
#define _XOPEN_ fdlibm_xopen
#define _POSIX_ fdlibm_posix
#ifndef __cplusplus
struct exception {
int type;
char *name;
double arg1;
double arg2;
double retval;
};
#endif
#define HUGE MAXFLOAT
/*
* set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
* (one may replace the following line by "#include <values.h>")
*/
#define X_TLOSS 1.41484755040568800000e+16
#define DOMAIN 1
#define SING 2
#define OVERFLOW 3
#define UNDERFLOW 4
#define TLOSS 5
#define PLOSS 6
#endif /* _NETBSD_SOURCE */
__BEGIN_DECLS
/*
* ANSI/POSIX
*/
double acos __P((double));
double asin __P((double));
double atan __P((double));
double atan2 __P((double, double));
double cos __P((double));
double sin __P((double));
double tan __P((double));
double cosh __P((double));
double sinh __P((double));
double tanh __P((double));
double exp __P((double));
double frexp __P((double, int *));
double ldexp __P((double, int));
double log __P((double));
double log10 __P((double));
double modf __P((double, double *));
double pow __P((double, double));
double sqrt __P((double));
double ceil __P((double));
double fabs __P((double));
double floor __P((double));
double fmod __P((double, double));
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
double erf __P((double));
double erfc __P((double));
double gamma __P((double));
double hypot __P((double, double));
int finite __P((double));
double j0 __P((double));
double j1 __P((double));
double jn __P((int, double));
double lgamma __P((double));
double y0 __P((double));
double y1 __P((double));
double yn __P((int, double));
#if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
double acosh __P((double));
double asinh __P((double));
double atanh __P((double));
double cbrt __P((double));
double expm1 __P((double));
int ilogb __P((double));
double log1p __P((double));
double logb __P((double));
double nextafter __P((double, double));
double remainder __P((double, double));
double rint __P((double));
double scalb __P((double, double));
#endif /* (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)*/
#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
/*
* ISO C99
*/
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
!defined(_XOPEN_SOURCE) || \
((__STDC_VERSION__ - 0) >= 199901L) || \
((_POSIX_C_SOURCE - 0) >= 200112L) || \
((_XOPEN_SOURCE - 0) >= 600) || \
defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
/* 7.12.3.1 int fpclassify(real-floating x) */
#define fpclassify(__x) __fpmacro_unary_floating(fpclassify, __x)
/* 7.12.3.2 int isfinite(real-floating x) */
#define isfinite(__x) __fpmacro_unary_floating(isfinite, __x)
/* 7.12.3.5 int isnormal(real-floating x) */
#define isnormal(__x) (fpclassify(__x) == FP_NORMAL)
/* 7.12.3.6 int signbit(real-floating x) */
#define signbit(__x) __fpmacro_unary_floating(signbit, __x)
/* 7.12.4 trigonometric */
float acosf __P((float));
float asinf __P((float));
float atanf __P((float));
float atan2f __P((float, float));
float cosf __P((float));
float sinf __P((float));
float tanf __P((float));
/* 7.12.5 hyperbolic */
float acoshf __P((float));
float asinhf __P((float));
float atanhf __P((float));
float coshf __P((float));
float sinhf __P((float));
float tanhf __P((float));
/* 7.12.6 exp / log */
float expf __P((float));
float expm1f __P((float));
float frexpf __P((float, int *));
int ilogbf __P((float));
float ldexpf __P((float, int));
float logf __P((float));
float log10f __P((float));
float log1pf __P((float));
float logbf __P((float));
float modff __P((float, float *));
float scalbnf __P((float, int));
/* 7.12.7 power / absolute */
float cbrtf __P((float));
float fabsf __P((float));
float hypotf __P((float, float));
float powf __P((float, float));
float sqrtf __P((float));
/* 7.12.8 error / gamma */
float erff __P((float));
float erfcf __P((float));
float lgammaf __P((float));
/* 7.12.9 nearest integer */
float ceilf __P((float));
float floorf __P((float));
float rintf __P((float));
long int lrint __P((double));
long int lrintf __P((float));
/* LONGLONG */
long long int llrint __P((double));
/* LONGLONG */
long long int llrintf __P((float));
long int lround __P((double));
long int lroundf __P((float));
/* LONGLONG */
long long int llround __P((double));
/* LONGLONG */
long long int llroundf __P((float));
/* 7.12.10 remainder */
float fmodf __P((float, float));
float remainderf __P((float, float));
/* 7.2.11 manipulation */
float copysignf __P((float, float));
float nextafterf __P((float, float));
#endif /* !_ANSI_SOURCE && ... */
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \
!defined(_XOPEN_SOURCE) || \
((__STDC_VERSION__ - 0) >= 199901L) || \
((_POSIX_C_SOURCE - 0) >= 200112L) || \
defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
/* 7.12.3.3 int isinf(real-floating x) */
#ifdef __isinf
#define isinf(__x) __isinf(__x)
#else
#define isinf(__x) __fpmacro_unary_floating(isinf, __x)
#endif
/* 7.12.3.4 int isnan(real-floating x) */
#ifdef __isnan
#define isnan(__x) __isnan(__x)
#else
#define isnan(__x) __fpmacro_unary_floating(isnan, __x)
#endif
#endif /* !_ANSI_SOURCE && ... */
#if defined(_NETBSD_SOURCE)
#ifndef __cplusplus
int matherr __P((struct exception *));
#endif
/*
* IEEE Test Vector
*/
double significand __P((double));
/*
* Functions callable from C, intended to support IEEE arithmetic.
*/
double copysign __P((double, double));
double scalbn __P((double, int));
/*
* BSD math library entry points
*/
#ifndef __MATH_PRIVATE__
double cabs __P((/* struct complex { double r; double i; } */));
#endif
double drem __P((double, double));
#endif /* _NETBSD_SOURCE */
#if defined(_NETBSD_SOURCE) || defined(_REENTRANT)
/*
* Reentrant version of gamma & lgamma; passes signgam back by reference
* as the second argument; user must allocate space for signgam.
*/
double gamma_r __P((double, int *));
double lgamma_r __P((double, int *));
#endif /* _NETBSD_SOURCE || _REENTRANT */
#if defined(_NETBSD_SOURCE)
/* float versions of ANSI/POSIX functions */
float gammaf __P((float));
int isinff __P((float));
int isnanf __P((float));
int finitef __P((float));
float j0f __P((float));
float j1f __P((float));
float jnf __P((int, float));
float y0f __P((float));
float y1f __P((float));
float ynf __P((int, float));
float scalbf __P((float, float));
/*
* float version of IEEE Test Vector
*/
float significandf __P((float));
/*
* float versions of BSD math library entry points
*/
#ifndef __MATH_PRIVATE__
float cabsf __P((/* struct complex { float r; float i; } */));
#endif
float dremf __P((float, float));
#endif /* _NETBSD_SOURCE */
#if defined(_NETBSD_SOURCE) || defined(_REENTRANT)
/*
* Float versions of reentrant version of gamma & lgamma; passes
* signgam back by reference as the second argument; user must
* allocate space for signgam.
*/
float gammaf_r __P((float, int *));
float lgammaf_r __P((float, int *));
#endif /* !... || _REENTRANT */
/*
* Library implementation
*/
int __fpclassifyf __P((float));
int __fpclassifyd __P((double));
int __isfinitef __P((float));
int __isfinited __P((double));
int __isinff __P((float));
int __isinfd __P((double));
int __isnanf __P((float));
int __isnand __P((double));
int __signbitf __P((float));
int __signbitd __P((double));
#ifdef __HAVE_LONG_DOUBLE
int __fpclassifyl __P((long double));
int __isfinitel __P((long double));
int __isinfl __P((long double));
int __isnanl __P((long double));
int __signbitl __P((long double));
#endif
__END_DECLS
#endif /* _MATH_H_ */
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