/* $OpenBSD: math.h,v 1.4 2000/03/01 22:27:13 todd 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_ /* * 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 #ifdef __LIBM_PRIVATE 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 /* !_XOPEN_SOURCE */ #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ #include <sys/cdefs.h> __BEGIN_DECLS /* * ANSI/POSIX */ extern double acos __P((double)); extern double asin __P((double)); extern double atan __P((double)); extern double atan2 __P((double, double)); extern double cos __P((double)); extern double sin __P((double)); extern double tan __P((double)); extern double cosh __P((double)); extern double sinh __P((double)); extern double tanh __P((double)); extern double exp __P((double)); extern double frexp __P((double, int *)); extern double ldexp __P((double, int)); extern double log __P((double)); extern double log10 __P((double)); extern double modf __P((double, double *)); extern double pow __P((double, double)); extern double sqrt __P((double)); extern double ceil __P((double)); extern double fabs __P((double)); extern double floor __P((double)); extern double fmod __P((double, double)); #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) extern double erf __P((double)); extern double erfc __P((double)); extern double gamma __P((double)); extern double hypot __P((double, double)); extern int isinf __P((double)); extern int isnan __P((double)); extern int finite __P((double)); extern double j0 __P((double)); extern double j1 __P((double)); extern double jn __P((int, double)); extern double lgamma __P((double)); extern double y0 __P((double)); extern double y1 __P((double)); extern double yn __P((int, double)); #if !defined(_XOPEN_SOURCE) extern double acosh __P((double)); extern double asinh __P((double)); extern double atanh __P((double)); extern double cbrt __P((double)); extern double logb __P((double)); extern double nextafter __P((double, double)); extern double remainder __P((double, double)); extern double scalb __P((double, double)); #ifdef __LIBM_PRIVATE extern int matherr __P((struct exception *)); #endif /* * IEEE Test Vector */ extern double significand __P((double)); /* * Functions callable from C, intended to support IEEE arithmetic. */ extern double copysign __P((double, double)); extern int ilogb __P((double)); extern double rint __P((double)); extern double scalbn __P((double, int)); /* * BSD math library entry points */ extern double cabs(); extern double drem __P((double, double)); extern double expm1 __P((double)); extern double log1p __P((double)); /* * 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 __P((double, int *)); extern double lgamma_r __P((double, int *)); #endif /* _REENTRANT */ /* float versions of ANSI/POSIX functions */ extern float acosf __P((float)); extern float asinf __P((float)); extern float atanf __P((float)); extern float atan2f __P((float, float)); extern float cosf __P((float)); extern float sinf __P((float)); extern float tanf __P((float)); extern float coshf __P((float)); extern float sinhf __P((float)); extern float tanhf __P((float)); extern float expf __P((float)); extern float frexpf __P((float, int *)); extern float ldexpf __P((float, int)); extern float logf __P((float)); extern float log10f __P((float)); extern float modff __P((float, float *)); extern float powf __P((float, float)); extern float sqrtf __P((float)); extern float ceilf __P((float)); extern float fabsf __P((float)); extern float floorf __P((float)); extern float fmodf __P((float, float)); extern float erff __P((float)); extern float erfcf __P((float)); extern float gammaf __P((float)); extern float hypotf __P((float, float)); extern int isinff __P((float)); extern int isnanf __P((float)); extern int finitef __P((float)); extern float j0f __P((float)); extern float j1f __P((float)); extern float jnf __P((int, float)); extern float lgammaf __P((float)); extern float y0f __P((float)); extern float y1f __P((float)); extern float ynf __P((int, float)); extern float acoshf __P((float)); extern float asinhf __P((float)); extern float atanhf __P((float)); extern float cbrtf __P((float)); extern float logbf __P((float)); extern float nextafterf __P((float, float)); extern float remainderf __P((float, float)); extern float scalbf __P((float, float)); /* * float version of IEEE Test Vector */ extern float significandf __P((float)); /* * Float versions of functions callable from C, intended to support * IEEE arithmetic. */ extern float copysignf __P((float, float)); extern int ilogbf __P((float)); extern float rintf __P((float)); extern float scalbnf __P((float, int)); /* * float versions of BSD math library entry points */ extern float cabsf (); extern float dremf __P((float, float)); extern float expm1f __P((float)); extern float log1pf __P((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 __P((float, int *)); extern float lgammaf_r __P((float, int *)); #endif /* _REENTRANT */ #endif /* !_XOPEN_SOURCE */ #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ __END_DECLS #endif /* _MATH_H_ */