diff --git a/headers/posix/math.h b/headers/posix/math.h new file mode 100644 index 0000000000..480258e8aa --- /dev/null +++ b/headers/posix/math.h @@ -0,0 +1,285 @@ +/* + * ==================================================== + * 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 1.8 1999/08/28 00:06:42 peter Exp $ + */ + +#ifndef _MATH_H_ +#define _MATH_H_ + +/* + * ANSI/POSIX + */ +extern char __infinity[]; +#define HUGE_VAL (*(double *) __infinity) + +/* + * 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 + +#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 + * (one may replace the following line by "#include ") + */ + +#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 */ + + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* + * ANSI/POSIX + */ +extern double acos(double); +extern double asin(double); +extern double atan(double); +extern double atan2(double, double); +extern double cos(double); +extern double sin(double); +extern double tan(double); + +extern double cosh(double); +extern double sinh(double); +extern double tanh(double); + +extern double exp(double); +extern double frexp(double, int *); +extern double ldexp(double, int); +extern double log(double); +extern double log10(double); +extern double modf(double, double *); + +extern double pow(double, double); +extern double sqrt(double); + +extern double ceil(double); +extern double fabs(double); +extern double floor(double); +extern double fmod(double, double); + +#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) +extern double erf(double); +extern double erfc(double); +extern double gamma(double); +extern double hypot(double, double); +extern int isinf(double); +extern int isnan(double); +extern int finite(double); +extern double j0(double); +extern double j1(double); +extern double jn(int, double); +extern double lgamma(double); +extern double y0(double); +extern double y1(double); +extern double yn(int, double); + +#if !defined(_XOPEN_SOURCE) +extern double acosh(double); +extern double asinh(double); +extern double atanh(double); +extern double cbrt(double); +extern double logb(double); +extern double nextafter(double, double); +extern double remainder(double, double); +extern double scalb(double, double); + +#ifndef __cplusplus +extern int matherr(struct exception *); +#endif + +/* + * IEEE Test Vector + */ +extern double significand(double); + +/* + * Functions callable from C, intended to support IEEE arithmetic. + */ +extern double copysign(double, double); +extern int ilogb(double); +extern double rint(double); +extern double scalbn(double, int); + +/* + * BSD math library entry points + */ +struct complex { double x, y; }; +extern double cabs(struct complex); +extern double drem(double, double); +extern double expm1(double); +extern double log1p(double); +extern double z_abs(struct complex const *); /* complete non standard */ + +/* + * Reentrant version of gamma & lgamma; passes signgam back by reference + * as the second argument; user must allocate space for signgam. + */ +#ifdef _REENTRANT +extern double gamma_r(double, int *); +extern double lgamma_r(double, int *); +#endif /* _REENTRANT */ + + +/* float versions of ANSI/POSIX functions */ +extern float acosf(float); +extern float asinf(float); +extern float atanf(float); +extern float atan2f(float, float); +extern float cosf(float); +extern float sinf(float); +extern float tanf(float); + +extern float coshf(float); +extern float sinhf(float); +extern float tanhf(float); + +extern float expf(float); +extern float frexpf(float, int *); +extern float ldexpf(float, int); +extern float logf(float); +extern float log10f(float); +extern float modff(float, float *); + +extern float powf(float, float); +extern float sqrtf(float); + +extern float ceilf(float); +extern float fabsf(float); +extern float floorf(float); +extern float fmodf(float, float); + +extern float erff(float); +extern float erfcf(float); +extern float gammaf(float); +extern float hypotf(float, float); +extern int isnanf(float); +extern int finitef(float); +extern float j0f(float); +extern float j1f(float); +extern float jnf(int, float); +extern float lgammaf(float); +extern float y0f(float); +extern float y1f(float); +extern float ynf(int, float); + +extern float acoshf(float); +extern float asinhf(float); +extern float atanhf(float); +extern float cbrtf(float); +extern float logbf(float); +extern float nextafterf(float, float); +extern float remainderf(float, float); +extern float scalbf(float, float); + +/* + * float version of IEEE Test Vector + */ +extern float significandf(float); + +/* + * Float versions of functions callable from C, intended to support + * IEEE arithmetic. + */ +extern float copysignf(float, float); +extern int ilogbf(float); +extern float rintf(float); +extern float scalbnf(float, int); + +/* + * float versions of BSD math library entry points + */ +extern float cabsf (); +extern float dremf(float, float); +extern float expm1f(float); +extern float log1pf(float); + +/* + * Float versions of reentrant version of gamma & lgamma; passes + * signgam back by reference as the second argument; user must + * allocate space for signgam. + */ +#ifdef _REENTRANT +extern float gammaf_r(float, int *); +extern float lgammaf_r(float, int *); +#endif /* _REENTRANT */ + +#endif /* !_XOPEN_SOURCE */ +#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ + +#ifdef __cplusplus +} /* "C" */ +#endif + +#endif /* _MATH_H_ */