/* $OpenBSD: math.h,v 1.15 2008/06/11 21:16:43 martynas 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. * ==================================================== */ /* * from: @(#)fdlibm.h 5.1 93/09/24 */ #ifndef _MATH_H_ #define _MATH_H_ #include /* * ANSI/POSIX */ extern char __infinity[]; #define HUGE_VAL (*(double *)(void *)__infinity) /* * C99 */ /* XXX just appease the committee for now, needs proper defs... */ typedef float float_t; typedef double double_t; #define FLT_EVAL_METHOD (-1) /* * XOPEN/SVID */ #if __BSD_VISIBLE || __XPG_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) */ #ifdef __vax__ #define MAXFLOAT ((float)1.70141173319264430e+38) #else #define MAXFLOAT ((float)3.40282346638528860e+38) #endif extern int signgam; #endif /* __BSD_VISIBLE || __XPG_VISIBLE */ #if __BSD_VISIBLE 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 /* __BSD_VISIBLE */ __BEGIN_DECLS /* * 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); extern double round(double); extern double trunc(double); #if __BSD_VISIBLE || __XPG_VISIBLE 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 tgamma(double); extern double y0(double); extern double y1(double); extern double yn(int, double); #if __BSD_VISIBLE || __XPG_VISIBLE >= 500 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); #ifdef __LIBM_PRIVATE 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 long int lrint(double); extern long int lround(double); extern long long int llrint(double); extern long long int llround(double); extern double scalbn(double, int); /* * BSD math library entry points */ extern double cabs(); extern double drem(double, double); extern double expm1(double); extern double log1p(double); /* * Reentrant version of gamma & lgamma; passes signgam back by reference * as the second argument; user must allocate space for signgam. */ #if __BSD_VISIBLE || defined(_REENTRANT) extern double gamma_r(double, int *); extern double lgamma_r(double, int *); #endif /* __BSD_VISIBLE || _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 roundf(float); extern float truncf(float); extern float erff(float); extern float erfcf(float); extern float gammaf(float); extern float hypotf(float, float); extern int isinff(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 tgammaf(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 long int lrintf(float); extern long int lroundf(float); extern long long int llrintf(float); extern long long int llroundf(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. */ #if __BSD_VISIBLE || defined(_REENTRANT) extern float gammaf_r(float, int *); extern float lgammaf_r(float, int *); #endif /* __BSD_VISIBLE || _REENTRANT */ #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 500 */ #endif /* __BSD_VISIBLE || __XPG_VISIBLE */ __END_DECLS #endif /* _MATH_H_ */