/usr/include/openlibm/openlibm_math.h is in libopenlibm-dev 0.5.4+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ====================================================
* 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/openlibm.h,v 1.82 2011/11/12 19:55:48 theraven Exp $
*/
#ifdef OPENLIBM_USE_HOST_MATH_H
#include <math.h>
#else /* !OPENLIBM_USE_HOST_MATH_H */
#ifndef OPENLIBM_MATH_H
#define OPENLIBM_MATH_H
#if (defined(_WIN32) || defined (_MSC_VER)) && !defined(__WIN32__)
#define __WIN32__
#endif
#ifndef __arm__
#define LONG_DOUBLE
#endif
#ifndef __pure2
#define __pure2
#endif
#ifdef _WIN32
# ifdef IMPORT_EXPORTS
# define OLM_DLLEXPORT __declspec(dllimport)
# else
# define OLM_DLLEXPORT __declspec(dllexport)
# endif
#else
#define OLM_DLLEXPORT __attribute__ ((visibility("default")))
#endif
/*
* 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;
/* VBS
#if __GNUC_PREREQ__(3, 3) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
#define __MATH_BUILTIN_CONSTANTS
#endif
#if __GNUC_PREREQ__(3, 0) && !defined(__INTEL_COMPILER)
#define __MATH_BUILTIN_RELOPS
#endif
*/
//VBS begin
#define __MATH_BUILTIN_CONSTANTS
#define __MATH_BUILTIN_RELOPS
#ifndef __ISO_C_VISIBLE
#define __ISO_C_VISIBLE 1999
#endif
//VBS end
#ifdef __MATH_BUILTIN_CONSTANTS
#define HUGE_VAL __builtin_huge_val()
#else
#define HUGE_VAL (__infinity.__ud)
#endif
#if __ISO_C_VISIBLE >= 1999
#define FP_ILOGB0 (-INT_MAX)
#define FP_ILOGBNAN INT_MAX
#ifdef __MATH_BUILTIN_CONSTANTS
#define HUGE_VALF __builtin_huge_valf()
#define HUGE_VALL __builtin_huge_vall()
#define INFINITY __builtin_inff()
#define NAN __builtin_nanf("")
#else
#define HUGE_VALF (float)HUGE_VAL
#define HUGE_VALL (long double)HUGE_VAL
#define INFINITY HUGE_VALF
#define NAN (__nan.__uf)
#endif /* __MATH_BUILTIN_CONSTANTS */
#define MATH_ERRNO 1
#define MATH_ERREXCEPT 2
#define math_errhandling MATH_ERREXCEPT
#define FP_FAST_FMAF 1
#ifdef __ia64__
#define FP_FAST_FMA 1
#define FP_FAST_FMAL 1
#endif
/* 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) \
((sizeof (x) == sizeof (float)) ? __isfinitef(x) \
: (sizeof (x) == sizeof (double)) ? __isfinite(x) \
: __isfinitel(x))
#define isinf(x) \
((sizeof (x) == sizeof (float)) ? __isinff(x) \
: (sizeof (x) == sizeof (double)) ? isinf(x) \
: __isinfl(x))
#define isnan(x) \
((sizeof (x) == sizeof (float)) ? __isnanf(x) \
: (sizeof (x) == sizeof (double)) ? isnan(x) \
: __isnanl(x))
#define isnormal(x) \
((sizeof (x) == sizeof (float)) ? __isnormalf(x) \
: (sizeof (x) == sizeof (double)) ? __isnormal(x) \
: __isnormall(x))
#ifdef __MATH_BUILTIN_RELOPS
#define isgreater(x, y) __builtin_isgreater((x), (y))
#define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y))
#define isless(x, y) __builtin_isless((x), (y))
#define islessequal(x, y) __builtin_islessequal((x), (y))
#define islessgreater(x, y) __builtin_islessgreater((x), (y))
#define isunordered(x, y) __builtin_isunordered((x), (y))
#else
#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))
#endif /* __MATH_BUILTIN_RELOPS */
#define signbit(x) \
((sizeof (x) == sizeof (float)) ? __signbitf(x) \
: (sizeof (x) == sizeof (double)) ? __signbit(x) \
: __signbitl(x))
//VBS
//typedef __double_t double_t;
//typedef __float_t float_t;
#endif /* __ISO_C_VISIBLE >= 1999 */
/*
* XOPEN/SVID
*/
#if __BSD_VISIBLE || __XSI_VISIBLE
#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)
#ifndef OPENLIBM_ONLY_THREAD_SAFE
extern int signgam;
#endif
#endif /* __BSD_VISIBLE || __XSI_VISIBLE */
#if __BSD_VISIBLE
#if 0
/* Old value from 4.4BSD-Lite openlibm.h; this is probably better. */
#define HUGE HUGE_VAL
#else
#define HUGE MAXFLOAT
#endif
#endif /* __BSD_VISIBLE */
/*
* Most of these functions depend on the rounding mode and have the side
* effect of raising floating-point exceptions, so they are not declared
* as __pure2. In C99, FENV_ACCESS affects the purity of these functions.
*/
#if defined(__cplusplus)
extern "C" {
#endif
/* Symbol present when OpenLibm is used. */
int isopenlibm(void);
/*
* ANSI/POSIX
*/
OLM_DLLEXPORT int __fpclassifyd(double) __pure2;
OLM_DLLEXPORT int __fpclassifyf(float) __pure2;
OLM_DLLEXPORT int __fpclassifyl(long double) __pure2;
OLM_DLLEXPORT int __isfinitef(float) __pure2;
OLM_DLLEXPORT int __isfinite(double) __pure2;
OLM_DLLEXPORT int __isfinitel(long double) __pure2;
OLM_DLLEXPORT int __isinff(float) __pure2;
OLM_DLLEXPORT int __isinfl(long double) __pure2;
OLM_DLLEXPORT int __isnanf(float) __pure2;
OLM_DLLEXPORT int __isnanl(long double) __pure2;
OLM_DLLEXPORT int __isnormalf(float) __pure2;
OLM_DLLEXPORT int __isnormal(double) __pure2;
OLM_DLLEXPORT int __isnormall(long double) __pure2;
OLM_DLLEXPORT int __signbit(double) __pure2;
OLM_DLLEXPORT int __signbitf(float) __pure2;
OLM_DLLEXPORT int __signbitl(long double) __pure2;
OLM_DLLEXPORT double acos(double);
OLM_DLLEXPORT double asin(double);
OLM_DLLEXPORT double atan(double);
OLM_DLLEXPORT double atan2(double, double);
OLM_DLLEXPORT double cos(double);
OLM_DLLEXPORT double sin(double);
OLM_DLLEXPORT double tan(double);
OLM_DLLEXPORT double cosh(double);
OLM_DLLEXPORT double sinh(double);
OLM_DLLEXPORT double tanh(double);
OLM_DLLEXPORT double exp(double);
OLM_DLLEXPORT double frexp(double, int *); /* fundamentally !__pure2 */
OLM_DLLEXPORT double ldexp(double, int);
OLM_DLLEXPORT double log(double);
OLM_DLLEXPORT double log10(double);
OLM_DLLEXPORT double modf(double, double *); /* fundamentally !__pure2 */
OLM_DLLEXPORT double pow(double, double);
OLM_DLLEXPORT double sqrt(double);
OLM_DLLEXPORT double ceil(double);
OLM_DLLEXPORT double fabs(double) __pure2;
OLM_DLLEXPORT double floor(double);
OLM_DLLEXPORT double fmod(double, double);
/*
* These functions are not in C90.
*/
#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE
OLM_DLLEXPORT double acosh(double);
OLM_DLLEXPORT double asinh(double);
OLM_DLLEXPORT double atanh(double);
OLM_DLLEXPORT double cbrt(double);
OLM_DLLEXPORT double erf(double);
OLM_DLLEXPORT double erfc(double);
OLM_DLLEXPORT double exp2(double);
OLM_DLLEXPORT double expm1(double);
OLM_DLLEXPORT double fma(double, double, double);
OLM_DLLEXPORT double hypot(double, double);
OLM_DLLEXPORT int ilogb(double) __pure2;
OLM_DLLEXPORT int (isinf)(double) __pure2;
OLM_DLLEXPORT int (isnan)(double) __pure2;
OLM_DLLEXPORT double lgamma(double);
OLM_DLLEXPORT long long llrint(double);
OLM_DLLEXPORT long long llround(double);
OLM_DLLEXPORT double log1p(double);
OLM_DLLEXPORT double log2(double);
OLM_DLLEXPORT double logb(double);
OLM_DLLEXPORT long lrint(double);
OLM_DLLEXPORT long lround(double);
OLM_DLLEXPORT double nan(const char *) __pure2;
OLM_DLLEXPORT double nextafter(double, double);
OLM_DLLEXPORT double remainder(double, double);
OLM_DLLEXPORT double remquo(double, double, int *);
OLM_DLLEXPORT double rint(double);
#endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */
#if __BSD_VISIBLE || __XSI_VISIBLE
OLM_DLLEXPORT double j0(double);
OLM_DLLEXPORT double j1(double);
OLM_DLLEXPORT double jn(int, double);
OLM_DLLEXPORT double y0(double);
OLM_DLLEXPORT double y1(double);
OLM_DLLEXPORT double yn(int, double);
#endif /* __BSD_VISIBLE || __XSI_VISIBLE */
#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999
OLM_DLLEXPORT double copysign(double, double) __pure2;
OLM_DLLEXPORT double fdim(double, double);
OLM_DLLEXPORT double fmax(double, double) __pure2;
OLM_DLLEXPORT double fmin(double, double) __pure2;
OLM_DLLEXPORT double nearbyint(double);
OLM_DLLEXPORT double round(double);
OLM_DLLEXPORT double scalbln(double, long);
OLM_DLLEXPORT double scalbn(double, int);
OLM_DLLEXPORT double tgamma(double);
OLM_DLLEXPORT double trunc(double);
#endif
/*
* BSD math library entry points
*/
#if __BSD_VISIBLE
OLM_DLLEXPORT int isnanf(float) __pure2;
/*
* Reentrant version of lgamma; passes signgam back by reference as the
* second argument; user must allocate space for signgam.
*/
OLM_DLLEXPORT double lgamma_r(double, int *);
/*
* Single sine/cosine function.
*/
OLM_DLLEXPORT void sincos(double, double *, double *);
#endif /* __BSD_VISIBLE */
/* float versions of ANSI/POSIX functions */
#if __ISO_C_VISIBLE >= 1999
OLM_DLLEXPORT float acosf(float);
OLM_DLLEXPORT float asinf(float);
OLM_DLLEXPORT float atanf(float);
OLM_DLLEXPORT float atan2f(float, float);
OLM_DLLEXPORT float cosf(float);
OLM_DLLEXPORT float sinf(float);
OLM_DLLEXPORT float tanf(float);
OLM_DLLEXPORT float coshf(float);
OLM_DLLEXPORT float sinhf(float);
OLM_DLLEXPORT float tanhf(float);
OLM_DLLEXPORT float exp2f(float);
OLM_DLLEXPORT float expf(float);
OLM_DLLEXPORT float expm1f(float);
OLM_DLLEXPORT float frexpf(float, int *); /* fundamentally !__pure2 */
OLM_DLLEXPORT int ilogbf(float) __pure2;
OLM_DLLEXPORT float ldexpf(float, int);
OLM_DLLEXPORT float log10f(float);
OLM_DLLEXPORT float log1pf(float);
OLM_DLLEXPORT float log2f(float);
OLM_DLLEXPORT float logf(float);
OLM_DLLEXPORT float modff(float, float *); /* fundamentally !__pure2 */
OLM_DLLEXPORT float powf(float, float);
OLM_DLLEXPORT float sqrtf(float);
OLM_DLLEXPORT float ceilf(float);
OLM_DLLEXPORT float fabsf(float) __pure2;
OLM_DLLEXPORT float floorf(float);
OLM_DLLEXPORT float fmodf(float, float);
OLM_DLLEXPORT float roundf(float);
OLM_DLLEXPORT float erff(float);
OLM_DLLEXPORT float erfcf(float);
OLM_DLLEXPORT float hypotf(float, float);
OLM_DLLEXPORT float lgammaf(float);
OLM_DLLEXPORT float tgammaf(float);
OLM_DLLEXPORT float acoshf(float);
OLM_DLLEXPORT float asinhf(float);
OLM_DLLEXPORT float atanhf(float);
OLM_DLLEXPORT float cbrtf(float);
OLM_DLLEXPORT float logbf(float);
OLM_DLLEXPORT float copysignf(float, float) __pure2;
OLM_DLLEXPORT long long llrintf(float);
OLM_DLLEXPORT long long llroundf(float);
OLM_DLLEXPORT long lrintf(float);
OLM_DLLEXPORT long lroundf(float);
OLM_DLLEXPORT float nanf(const char *) __pure2;
OLM_DLLEXPORT float nearbyintf(float);
OLM_DLLEXPORT float nextafterf(float, float);
OLM_DLLEXPORT float remainderf(float, float);
OLM_DLLEXPORT float remquof(float, float, int *);
OLM_DLLEXPORT float rintf(float);
OLM_DLLEXPORT float scalblnf(float, long);
OLM_DLLEXPORT float scalbnf(float, int);
OLM_DLLEXPORT float truncf(float);
OLM_DLLEXPORT float fdimf(float, float);
OLM_DLLEXPORT float fmaf(float, float, float);
OLM_DLLEXPORT float fmaxf(float, float) __pure2;
OLM_DLLEXPORT float fminf(float, float) __pure2;
#endif
/*
* float versions of BSD math library entry points
*/
#if __BSD_VISIBLE
OLM_DLLEXPORT float dremf(float, float);
OLM_DLLEXPORT float j0f(float);
OLM_DLLEXPORT float j1f(float);
OLM_DLLEXPORT float jnf(int, float);
OLM_DLLEXPORT float y0f(float);
OLM_DLLEXPORT float y1f(float);
OLM_DLLEXPORT float ynf(int, float);
/*
* Float versions of reentrant version of lgamma; passes signgam back by
* reference as the second argument; user must allocate space for signgam.
*/
OLM_DLLEXPORT float lgammaf_r(float, int *);
/*
* Single sine/cosine function.
*/
OLM_DLLEXPORT void sincosf(float, float *, float *);
#endif /* __BSD_VISIBLE */
/*
* long double versions of ISO/POSIX math functions
*/
#if __ISO_C_VISIBLE >= 1999
OLM_DLLEXPORT long double acoshl(long double);
OLM_DLLEXPORT long double acosl(long double);
OLM_DLLEXPORT long double asinhl(long double);
OLM_DLLEXPORT long double asinl(long double);
OLM_DLLEXPORT long double atan2l(long double, long double);
OLM_DLLEXPORT long double atanhl(long double);
OLM_DLLEXPORT long double atanl(long double);
OLM_DLLEXPORT long double cbrtl(long double);
OLM_DLLEXPORT long double ceill(long double);
OLM_DLLEXPORT long double copysignl(long double, long double) __pure2;
OLM_DLLEXPORT long double coshl(long double);
OLM_DLLEXPORT long double cosl(long double);
OLM_DLLEXPORT long double erfcl(long double);
OLM_DLLEXPORT long double erfl(long double);
OLM_DLLEXPORT long double exp2l(long double);
OLM_DLLEXPORT long double expl(long double);
OLM_DLLEXPORT long double expm1l(long double);
OLM_DLLEXPORT long double fabsl(long double) __pure2;
OLM_DLLEXPORT long double fdiml(long double, long double);
OLM_DLLEXPORT long double floorl(long double);
OLM_DLLEXPORT long double fmal(long double, long double, long double);
OLM_DLLEXPORT long double fmaxl(long double, long double) __pure2;
OLM_DLLEXPORT long double fminl(long double, long double) __pure2;
OLM_DLLEXPORT long double fmodl(long double, long double);
OLM_DLLEXPORT long double frexpl(long double value, int *); /* fundamentally !__pure2 */
OLM_DLLEXPORT long double hypotl(long double, long double);
OLM_DLLEXPORT int ilogbl(long double) __pure2;
OLM_DLLEXPORT long double ldexpl(long double, int);
OLM_DLLEXPORT long double lgammal(long double);
OLM_DLLEXPORT long long llrintl(long double);
OLM_DLLEXPORT long long llroundl(long double);
OLM_DLLEXPORT long double log10l(long double);
OLM_DLLEXPORT long double log1pl(long double);
OLM_DLLEXPORT long double log2l(long double);
OLM_DLLEXPORT long double logbl(long double);
OLM_DLLEXPORT long double logl(long double);
OLM_DLLEXPORT long lrintl(long double);
OLM_DLLEXPORT long lroundl(long double);
OLM_DLLEXPORT long double modfl(long double, long double *); /* fundamentally !__pure2 */
OLM_DLLEXPORT long double nanl(const char *) __pure2;
OLM_DLLEXPORT long double nearbyintl(long double);
OLM_DLLEXPORT long double nextafterl(long double, long double);
OLM_DLLEXPORT double nexttoward(double, long double);
OLM_DLLEXPORT float nexttowardf(float, long double);
OLM_DLLEXPORT long double nexttowardl(long double, long double);
OLM_DLLEXPORT long double powl(long double, long double);
OLM_DLLEXPORT long double remainderl(long double, long double);
OLM_DLLEXPORT long double remquol(long double, long double, int *);
OLM_DLLEXPORT long double rintl(long double);
OLM_DLLEXPORT long double roundl(long double);
OLM_DLLEXPORT long double scalblnl(long double, long);
OLM_DLLEXPORT long double scalbnl(long double, int);
OLM_DLLEXPORT long double sinhl(long double);
OLM_DLLEXPORT long double sinl(long double);
OLM_DLLEXPORT long double sqrtl(long double);
OLM_DLLEXPORT long double tanhl(long double);
OLM_DLLEXPORT long double tanl(long double);
OLM_DLLEXPORT long double tgammal(long double);
OLM_DLLEXPORT long double truncl(long double);
#endif /* __ISO_C_VISIBLE >= 1999 */
/* Reentrant version of lgammal. */
#if __BSD_VISIBLE
OLM_DLLEXPORT long double lgammal_r(long double, int *);
/*
* Single sine/cosine function.
*/
OLM_DLLEXPORT void sincosl(long double, long double *, long double *);
#endif /* __BSD_VISIBLE */
#if defined(__cplusplus)
}
#endif
#endif /* !OPENLIBM_MATH_H */
#endif /* OPENLIBM_USE_HOST_MATH_H */
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