/*
* ====================================================
* 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.
* ====================================================
*/
/*
* from: @(#)fdlibm.h 5.1 93/09/24
* $FreeBSD: src/lib/msun/src/math.h,v 1.27 2003/10/23 08:23:38 des Exp $
*/
#ifndef _MATH_H_
#define _MATH_H_
#include <sys/_types.h>
/*
* ANSI/POSIX
*/
extern const union __infinity_un {
unsigned char __uc[8];
double __ud;
} __infinity;
extern const union __nan_un {
unsigned char __uc[sizeof(float)];
float __uf;
} __nan;
#define FP_ILOGB0 (-0x7fffffff - 1) /* INT_MIN */
#define FP_ILOGBNAN 0x7fffffff /* INT_MAX */
#define HUGE_VAL (__infinity.__ud)
#define HUGE_VALF (float)HUGE_VAL
#define HUGE_VALL (long double)HUGE_VAL
#define INFINITY HUGE_VALF
#define NAN (__nan.__uf)
/* Symbolic constants to classify floating point numbers. */
#define FP_INFINITE 0x01
#define FP_NAN 0x02
#define FP_NORMAL 0x04
#define FP_SUBNORMAL 0x08
#define FP_ZERO 0x10
#define fpclassify(x) \
((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \
: (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \
: __fpclassifyl(x))
#define isfinite(x) ((fpclassify(x) & (FP_INFINITE|FP_NAN)) == 0)
#define isinf(x) (fpclassify(x) == FP_INFINITE)
#define isnan(x) (fpclassify(x) == FP_NAN)
#define isnanf(x) isnan(x)
#define isnormal(x) (fpclassify(x) == FP_NORMAL)
#define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
#define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
#define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
#define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
#define islessgreater(x, y) (!isunordered((x), (y)) && \
((x) > (y) || (y) > (x)))
#define isunordered(x, y) (isnan(x) || isnan(y))
#define signbit(x) __signbit(x)
typedef __double_t double_t;
typedef __float_t float_t;
/*
* XOPEN/SVID
*/
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_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;
#if !defined(_XOPEN_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
/* We have a problem when using C++ since `exception' is a reserved
name in C++. */
#ifndef __cplusplus
struct exception {
int type;
char *name;
double arg1;
double arg2;
double retval;
};
#endif
#if 0
/* Old value from 4.4BSD-Lite math.h; this is probably better. */
#define HUGE HUGE_VAL
#else
#define HUGE MAXFLOAT
#endif
/*
* 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 /* !_XOPEN_SOURCE */
#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
#include <sys/cdefs.h>
/*
* Most of these functions have the side effect of setting errno, so they
* are not declared as __pure2. (XXX: this point needs to be revisited,
* since C99 doesn't require the mistake of setting errno, and we mostly
* don't set it anyway. In C99, pragmas and functions for changing the
* rounding mode affect the purity of these functions.)
*/
__BEGIN_DECLS
/*
* ANSI/POSIX
*/
int __fpclassifyd(double) __pure2;
int __fpclassifyf(float) __pure2;
int __fpclassifyl(long double) __pure2;
int __signbit(double) __pure2;
double acos(double);
double asin(double);
double atan(double);
double atan2(double, double);
double cos(double);
double sin(double);
double tan(double);
double cosh(double);
double sinh(double);
double tanh(double);
double exp(double);
double frexp(double, int *); /* fundamentally !__pure2 */
double ldexp(double, int);
double log(double);
double log10(double);
double modf(double, double *); /* fundamentally !__pure2 */
double pow(double, double);
double sqrt(double);
double ceil(double);
double fabs(double);
double floor(double);
double fmod(double, double);
/*
* These functions are not in C90 so they can be "right". The ones that
* never set errno in lib/msun are declared as __pure2.
*/
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
double erf(double);
double erfc(double) __pure2;
int finite(double) __pure2;
double gamma(double);
double hypot(double, double);
double j0(double);
double j1(double);
double jn(int, double);
double lgamma(double);
double y0(double);
double y1(double);
double yn(int, double);
#if !defined(_XOPEN_SOURCE)
double acosh(double);
double asinh(double);
double atanh(double);
double cbrt(double) __pure2;
double logb(double) __pure2;
double nextafter(double, double);
double remainder(double, double);
double scalb(double, double);
double tgamma(double);
#ifndef __cplusplus
int matherr(struct exception *);
#endif
/*
* IEEE Test Vector
*/
double significand(double);
/*
* Functions callable from C, intended to support IEEE arithmetic.
*/
double copysign(double, double) __pure2;
int ilogb(double);
double rint(double) __pure2;
double scalbn(double, int);
/*
* BSD math library entry points
*/
double drem(double, double);
double expm1(double) __pure2;
double log1p(double) __pure2;
/*
* Reentrant version of gamma & lgamma; passes signgam back by reference
* as the second argument; user must allocate space for signgam.
*/
#if __BSD_VISIBLE
double gamma_r(double, int *);
double lgamma_r(double, int *);
#endif /* __BSD_VISIBLE */
/* float versions of ANSI/POSIX functions */
float acosf(float);
float asinf(float);
float atanf(float);
float atan2f(float, float);
float cosf(float);
float sinf(float);
float tanf(float);
float coshf(float);
float sinhf(float);
float tanhf(float);
float expf(float);
float frexpf(float, int *); /* fundamentally !__pure2 */
float ldexpf(float, int);
float logf(float);
float log10f(float);
float modff(float, float *); /* fundamentally !__pure2 */
float powf(float, float);
float sqrtf(float);
float ceilf(float);
float fabsf(float);
float floorf(float);
float fmodf(float, float);
float erff(float);
float erfcf(float) __pure2;
int finitef(float) __pure2;
float gammaf(float);
float hypotf(float, float) __pure2;
float j0f(float);
float j1f(float);
float jnf(int, float);
float lgammaf(float);
float y0f(float);
float y1f(float);
float ynf(int, float);
float acoshf(float);
float asinhf(float);
float atanhf(float);
float cbrtf(float) __pure2;
float logbf(float) __pure2;
float nextafterf(float, float);
float remainderf(float, float);
float scalbf(float, float);
/*
* float version of IEEE Test Vector
*/
float significandf(float);
/*
* Float versions of functions callable from C, intended to support
* IEEE arithmetic.
*/
float copysignf(float, float) __pure2;
int ilogbf(float);
float rintf(float);
float scalbnf(float, int);
/*
* float versions of BSD math library entry points
*/
float dremf(float, float);
float expm1f(float) __pure2;
float log1pf(float) __pure2;
/*
* Float versions of reentrant version of gamma & lgamma; passes
* signgam back by reference as the second argument; user must
* allocate space for signgam.
*/
#if __BSD_VISIBLE
float gammaf_r(float, int *);
float lgammaf_r(float, int *);
#endif /* __BSD_VISIBLE */
/*
* long double versions of ISO/POSIX math functions
*/
#if 0
long double acoshl(long double);
long double acosl(long double);
long double asinhl(long double);
long double asinl(long double);
long double atan2l(long double, long double);
long double atanhl(long double);
long double atanl(long double);
long double cbrtl(long double);
long double ceill(long double);
long double copysignl(long double, long double);
long double coshl(long double);
long double cosl(long double);
long double erfcl(long double);
long double erfl(long double);
long double exp2l(long double);
long double expl(long double);
long double expm1l(long double);
#endif
long double fabsl(long double);
#if 0
long double fdiml(long double, long double);
long double floorl(long double);
long double fmal(long double, long double, long double);
long double fmaxl(long double, long double);
long double fminl(long double, long double);
long double fmodl(long double, long double);
long double frexpl(long double value, int *);
long double hypotl(long double, long double);
int ilogbl(long double);
long double ldexpl(long double, int);
long double lgammal(long double);
long long llrintl(long double);
long long llroundl(long double);
long double log10l(long double);
long double log1pl(long double);
long double log2l(long double);
long double logbl(long double);
long double logl(long double);
long lrintl(long double);
long lroundl(long double);
long double modfl(long double, long double *);
long double nanl(const char *);
long double nearbyintl(long double);
long double nextafterl(long double, long double);
double nexttoward(double, long double);
float nexttowardf(float, long double);
long double nexttowardl(long double, long double);
long double powl(long double, long double);
long double remainderl(long double, long double);
long double remquol(long double, long double, int *);
long double rintl(long double);
long double roundl(long double);
long double scalblnl(long double, long);
long double scalbnl(long double, int);
long double sinhl(long double);
long double sinl(long double);
long double sqrtl(long double);
long double tanhl(long double);
long double tanl(long double);
long double tgammal(long double);
long double truncl(long double);
#endif
#endif /* !_XOPEN_SOURCE */
#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
__END_DECLS
#endif /* !_MATH_H_ */
