/* Copyright (c) 1995 by NeXT Computer, Inc. All rights reserved. */ /* * ==================================================== * 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. * ==================================================== */ #ifndef _MATH_H_ #define _MATH_H_ /* * ANSI/POSIX */ #define HUGE_VAL 1e500 /* IEEE: positive infinity */ /* * XOPEN/SVID */ #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) && !defined(__cplusplus) #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 struct exception { int type; char *name; double arg1; double arg2; double retval; }; #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 __pure double acos __P((double)); extern __pure double asin __P((double)); extern __pure double atan __P((double)); extern __pure double atan2 __P((double, double)); extern __pure double cos __P((double)); extern __pure double sin __P((double)); extern __pure double tan __P((double)); extern __pure double cosh __P((double)); extern __pure double sinh __P((double)); extern __pure double tanh __P((double)); extern __pure double exp __P((double)); extern double frexp __P((double, int *)); extern __pure double ldexp __P((double, int)); extern __pure double log __P((double)); extern __pure double log10 __P((double)); extern double modf __P((double, double *)); extern __pure double pow __P((double, double)); extern __pure double sqrt __P((double)); extern __pure double ceil __P((double)); extern __pure double fabs __P((double)); extern __pure double floor __P((double)); extern __pure double fmod __P((double, double)); #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) extern __pure double erf __P((double)); extern __pure double erfc __P((double)); extern double gamma __P((double)); extern __pure double hypot __P((double, double)); extern __pure int isinf __P((double)); extern __pure int isnan __P((double)); extern __pure int finite __P((double)); extern __pure double j0 __P((double)); extern __pure double j1 __P((double)); extern __pure double jn __P((int, double)); extern double lgamma __P((double)); extern __pure double y0 __P((double)); extern __pure double y1 __P((double)); extern __pure double yn __P((int, double)); #if !defined(_XOPEN_SOURCE) extern __pure double acosh __P((double)); extern __pure double asinh __P((double)); extern __pure double atanh __P((double)); extern __pure double cbrt __P((double)); extern __pure double logb __P((double)); extern __pure double nextafter __P((double, double)); extern __pure double remainder __P((double, double)); extern __pure double scalb __P((double, int)); extern int matherr __P((struct exception *)); /* * IEEE Test Vector */ extern __pure double significand __P((double)); /* * Functions callable from C, intended to support IEEE arithmetic. */ extern __pure double copysign __P((double, double)); extern __pure int ilogb __P((double)); extern __pure double rint __P((double)); extern __pure double scalbn __P((double, int)); /* * BSD math library entry points */ extern double cabs(); extern __pure double drem __P((double, double)); extern __pure double expm1 __P((double)); extern __pure 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 */ #endif /* !_XOPEN_SOURCE */ #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ __END_DECLS #endif /* _MATH_H_ */