/* * math.h * * PSXSDK * modified and stripped down from fdlibm */ #ifndef _MATH_H #define _MATH_H /* @(#)math.h 1.5 2010/06/16 */ /* * ==================================================== * Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved. * * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ #define __HI(x) *(1+(int*)&x) #define __LO(x) *(int*)&x #define __HIp(x) *(1+(int*)x) #define __LOp(x) *(int*)x #ifdef __STDC__ #define __P(p) p #else #define __P(p) () #endif /* * ANSI/POSIX */ extern int signgam; #define MAXFLOAT ((float)3.40282346638528860e+38) 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 /* * 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)); extern double erf __P((double)); extern double erfc __P((double)); extern double gamma __P((double)); extern double hypot __P((double, 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)); 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)); #ifdef _SCALB_INT extern double scalb __P((double, int)); #else extern double scalb __P((double, double)); #endif extern int matherr __P((struct exception *)); /* * 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 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 */ /* ieee style elementary functions */ extern double __ieee754_sqrt __P((double)); extern double __ieee754_acos __P((double)); extern double __ieee754_acosh __P((double)); extern double __ieee754_log __P((double)); extern double __ieee754_atanh __P((double)); extern double __ieee754_asin __P((double)); extern double __ieee754_atan2 __P((double,double)); extern double __ieee754_exp __P((double)); extern double __ieee754_cosh __P((double)); extern double __ieee754_fmod __P((double,double)); extern double __ieee754_pow __P((double,double)); extern double __ieee754_lgamma_r __P((double,int *)); extern double __ieee754_gamma_r __P((double,int *)); extern double __ieee754_lgamma __P((double)); extern double __ieee754_gamma __P((double)); extern double __ieee754_log10 __P((double)); extern double __ieee754_sinh __P((double)); extern double __ieee754_hypot __P((double,double)); extern double __ieee754_j0 __P((double)); extern double __ieee754_j1 __P((double)); extern double __ieee754_y0 __P((double)); extern double __ieee754_y1 __P((double)); extern double __ieee754_jn __P((int,double)); extern double __ieee754_yn __P((int,double)); extern double __ieee754_remainder __P((double,double)); extern int __ieee754_rem_pio2 __P((double,double*)); #ifdef _SCALB_INT extern double __ieee754_scalb __P((double,int)); #else extern double __ieee754_scalb __P((double,double)); #endif /* fdlibm kernel function */ extern double __kernel_standard __P((double,double,int)); extern double __kernel_sin __P((double,double,int)); extern double __kernel_cos __P((double,double)); extern double __kernel_tan __P((double,double,int)); extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*)); /* the defines below are from NetBSD's math.h - which is based on fdlibm as well */ #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) */ // definitions for wrappers float acosf(float x);; // acos(x); } float acoshf(float x); // acosh(x); } float asinf(float x); // asin(x); } float asinhf(float x); // asinf(x); } float atanf(float x); // atan(x); } float atanhf(float x); // atanh(x); } float atan2f(float x, float y); // atan2(x,y); } float cbrtf(float x); // cbrt(x); } float ceilf(float x); // ceil(x); } float copysignf(float x, float y) ; // copysign(x, y); } double copysignl(long double x, long double y); // copysign(x, y); } float cosf(float x); // cos(x); } float coshf(float x); // cosh(x); } float erff(float x); // erf(x); } float erfcf(float x); // erfc(x); } float expf(float x); // exp(x); } //float exp2f(float x); // exp2(x); } float expm1f(float x); // expm1(x); } float fabsf(float x); // fabs(x); } float finitef(float x); // finite(x); } float floorf(float x); // floor(x); } float fmodf(float x, float y); // fmod(x, y); } float hypotf(float x, float y); // hypot(x, y); } int ilogbf(float x); // ilogb(x); } int ilogbl(long double x); // ilogb(x); } float j0f(float x); // j0(x); } float j1f(float x); // j1(x); } float jnf(int n, float x); // jn(n,x); } float y0f(float x); // y0(x); } float y1f(float x); // y1(x); } float ynf(int n, float x); // yn(n, x); } float lgammaf(float x); // lgamma(x); } float gammaf(float x); // gamma(x); } //float tgammaf(float x); // tgamma(x); } float lgammaf_r(float x, int *sign); // lgamma_r(x, sign); } float gammaf_r(float x, int *sign); // gamma_r(x, sign); } float logf(float x); // log(x); } float log10f(float x) ; // log10(x); } float log1pf(float x) ; // log1p(x); } //float log2f(float x) ; // log2(x); } //float nanf(const char *tagp) ; // nan(tagp); } //long double nanl(const char *tagp) ; // nan(tagp); } float nextafterf(float x, float y) ; // nextafter(x, y); } long double nextafterl(long double x, long double y) ; // nextafter(x, y); } float powf(float x, float y) ; // pow(x, y); } float remainderf(float x, float y) ; // remainder(x, y); } //float remquof(float x, float y, int *quo) ; // remquo(x, y, quo); } float rintf(float x); // rint(x); } float scalbnf(float x, int n); // scalbn(x, n); } long double scalbnl(long double x, int n); // scalbn(x, n); } float sinf(float x); // sin(x); } float sinhf(float x); // sinh(x); } float sqrtf(float x); // sqrt(x); } float tanf(float x); // tan(x); } float tanhf(float x); // tanh(x); } //float truncf(float x); // trunc(x); } #endif