/* * ==================================================== * 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 1.8.2.2 2001/11/23 16:16:18 dd Exp $ * $DragonFly: src/lib/msun/src/Attic/math.h,v 1.3 2003/11/12 20:21:31 eirikn 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 /* 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 #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 */ #include __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); #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 */ 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. */ #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 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 */ __END_DECLS #endif /* _MATH_H_ */