320 lines
8.9 KiB
C
320 lines
8.9 KiB
C
/*
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* math.h
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*
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* PSXSDK
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* modified and stripped down from fdlibm
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*/
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#ifndef _MATH_H
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#define _MATH_H
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/* @(#)math.h 1.5 2010/06/16 */
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/*
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* ====================================================
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* Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#define __HI(x) *(1+(int*)&x)
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#define __LO(x) *(int*)&x
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#define __HIp(x) *(1+(int*)x)
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#define __LOp(x) *(int*)x
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#ifdef __STDC__
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#define __P(p) p
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#else
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#define __P(p) ()
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#endif
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/*
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* ANSI/POSIX
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*/
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extern int signgam;
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#define MAXFLOAT ((float)3.40282346638528860e+38)
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enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
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#define _LIB_VERSION_TYPE enum fdversion
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#define _LIB_VERSION _fdlib_version
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/* if global variable _LIB_VERSION is not desirable, one may
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* change the following to be a constant by:
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* #define _LIB_VERSION_TYPE const enum version
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* In that case, after one initializes the value _LIB_VERSION (see
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* s_lib_version.c) during compile time, it cannot be modified
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* in the middle of a program
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*/
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extern _LIB_VERSION_TYPE _LIB_VERSION;
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#define _IEEE_ fdlibm_ieee
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#define _SVID_ fdlibm_svid
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#define _XOPEN_ fdlibm_xopen
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#define _POSIX_ fdlibm_posix
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struct exception {
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int type;
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char *name;
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double arg1;
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double arg2;
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double retval;
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};
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#define HUGE MAXFLOAT
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/*
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* set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
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* (one may replace the following line by "#include <values.h>")
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*/
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#define X_TLOSS 1.41484755040568800000e+16
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#define DOMAIN 1
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#define SING 2
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#define OVERFLOW 3
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#define UNDERFLOW 4
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#define TLOSS 5
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#define PLOSS 6
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/*
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* ANSI/POSIX
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*/
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extern double acos __P((double));
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extern double asin __P((double));
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extern double atan __P((double));
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extern double atan2 __P((double, double));
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extern double cos __P((double));
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extern double sin __P((double));
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extern double tan __P((double));
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extern double cosh __P((double));
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extern double sinh __P((double));
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extern double tanh __P((double));
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extern double exp __P((double));
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extern double frexp __P((double, int *));
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extern double ldexp __P((double, int));
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extern double log __P((double));
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extern double log10 __P((double));
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extern double modf __P((double, double *));
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extern double pow __P((double, double));
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extern double sqrt __P((double));
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extern double ceil __P((double));
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extern double fabs __P((double));
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extern double floor __P((double));
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extern double fmod __P((double, double));
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extern double erf __P((double));
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extern double erfc __P((double));
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extern double gamma __P((double));
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extern double hypot __P((double, double));
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extern int isnan __P((double));
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extern int finite __P((double));
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extern double j0 __P((double));
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extern double j1 __P((double));
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extern double jn __P((int, double));
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extern double lgamma __P((double));
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extern double y0 __P((double));
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extern double y1 __P((double));
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extern double yn __P((int, double));
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extern double acosh __P((double));
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extern double asinh __P((double));
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extern double atanh __P((double));
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extern double cbrt __P((double));
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extern double logb __P((double));
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extern double nextafter __P((double, double));
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extern double remainder __P((double, double));
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#ifdef _SCALB_INT
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extern double scalb __P((double, int));
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#else
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extern double scalb __P((double, double));
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#endif
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extern int matherr __P((struct exception *));
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/*
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* IEEE Test Vector
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*/
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extern double significand __P((double));
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/*
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* Functions callable from C, intended to support IEEE arithmetic.
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*/
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extern double copysign __P((double, double));
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extern int ilogb __P((double));
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extern double rint __P((double));
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extern double scalbn __P((double, int));
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/*
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* BSD math library entry points
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*/
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extern double expm1 __P((double));
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extern double log1p __P((double));
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/*
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* Reentrant version of gamma & lgamma; passes signgam back by reference
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* as the second argument; user must allocate space for signgam.
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*/
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#ifdef _REENTRANT
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extern double gamma_r __P((double, int *));
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extern double lgamma_r __P((double, int *));
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#endif /* _REENTRANT */
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/* ieee style elementary functions */
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extern double __ieee754_sqrt __P((double));
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extern double __ieee754_acos __P((double));
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extern double __ieee754_acosh __P((double));
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extern double __ieee754_log __P((double));
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extern double __ieee754_atanh __P((double));
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extern double __ieee754_asin __P((double));
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extern double __ieee754_atan2 __P((double,double));
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extern double __ieee754_exp __P((double));
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extern double __ieee754_cosh __P((double));
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extern double __ieee754_fmod __P((double,double));
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extern double __ieee754_pow __P((double,double));
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extern double __ieee754_lgamma_r __P((double,int *));
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extern double __ieee754_gamma_r __P((double,int *));
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extern double __ieee754_lgamma __P((double));
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extern double __ieee754_gamma __P((double));
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extern double __ieee754_log10 __P((double));
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extern double __ieee754_sinh __P((double));
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extern double __ieee754_hypot __P((double,double));
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extern double __ieee754_j0 __P((double));
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extern double __ieee754_j1 __P((double));
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extern double __ieee754_y0 __P((double));
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extern double __ieee754_y1 __P((double));
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extern double __ieee754_jn __P((int,double));
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extern double __ieee754_yn __P((int,double));
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extern double __ieee754_remainder __P((double,double));
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extern int __ieee754_rem_pio2 __P((double,double*));
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#ifdef _SCALB_INT
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extern double __ieee754_scalb __P((double,int));
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#else
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extern double __ieee754_scalb __P((double,double));
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#endif
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/* fdlibm kernel function */
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extern double __kernel_standard __P((double,double,int));
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extern double __kernel_sin __P((double,double,int));
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extern double __kernel_cos __P((double,double));
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extern double __kernel_tan __P((double,double,int));
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extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*));
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/* the defines below are from NetBSD's math.h - which is based on fdlibm as well */
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#define M_E 2.7182818284590452354 /* e */
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#define M_LOG2E 1.4426950408889634074 /* log 2e */
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#define M_LOG10E 0.43429448190325182765 /* log 10e */
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#define M_LN2 0.69314718055994530942 /* log e2 */
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#define M_LN10 2.30258509299404568402 /* log e10 */
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#define M_PI 3.14159265358979323846 /* pi */
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#define M_PI_2 1.57079632679489661923 /* pi/2 */
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#define M_PI_4 0.78539816339744830962 /* pi/4 */
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#define M_1_PI 0.31830988618379067154 /* 1/pi */
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#define M_2_PI 0.63661977236758134308 /* 2/pi */
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#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
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#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
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#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
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// definitions for wrappers
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float acosf(float x);; // acos(x); }
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float acoshf(float x); // acosh(x); }
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float asinf(float x); // asin(x); }
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float asinhf(float x); // asinf(x); }
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float atanf(float x); // atan(x); }
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float atanhf(float x); // atanh(x); }
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float atan2f(float x, float y); // atan2(x,y); }
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float cbrtf(float x); // cbrt(x); }
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float ceilf(float x); // ceil(x); }
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float copysignf(float x, float y) ; // copysign(x, y); }
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double copysignl(long double x, long double y); // copysign(x, y); }
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float cosf(float x); // cos(x); }
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float coshf(float x); // cosh(x); }
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float erff(float x); // erf(x); }
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float erfcf(float x); // erfc(x); }
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float expf(float x); // exp(x); }
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//float exp2f(float x); // exp2(x); }
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float expm1f(float x); // expm1(x); }
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float fabsf(float x); // fabs(x); }
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float finitef(float x); // finite(x); }
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float floorf(float x); // floor(x); }
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float fmodf(float x, float y); // fmod(x, y); }
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float hypotf(float x, float y); // hypot(x, y); }
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int ilogbf(float x); // ilogb(x); }
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int ilogbl(long double x); // ilogb(x); }
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float j0f(float x); // j0(x); }
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float j1f(float x); // j1(x); }
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float jnf(int n, float x); // jn(n,x); }
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float y0f(float x); // y0(x); }
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float y1f(float x); // y1(x); }
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float ynf(int n, float x); // yn(n, x); }
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float lgammaf(float x); // lgamma(x); }
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float gammaf(float x); // gamma(x); }
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//float tgammaf(float x); // tgamma(x); }
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float lgammaf_r(float x, int *sign); // lgamma_r(x, sign); }
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float gammaf_r(float x, int *sign); // gamma_r(x, sign); }
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float logf(float x); // log(x); }
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float log10f(float x) ; // log10(x); }
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float log1pf(float x) ; // log1p(x); }
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//float log2f(float x) ; // log2(x); }
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//float nanf(const char *tagp) ; // nan(tagp); }
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//long double nanl(const char *tagp) ; // nan(tagp); }
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float nextafterf(float x, float y) ; // nextafter(x, y); }
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long double nextafterl(long double x, long double y)
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; // nextafter(x, y); }
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float powf(float x, float y) ; // pow(x, y); }
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float remainderf(float x, float y) ; // remainder(x, y); }
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//float remquof(float x, float y, int *quo) ; // remquo(x, y, quo); }
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float rintf(float x); // rint(x); }
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float scalbnf(float x, int n); // scalbn(x, n); }
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long double scalbnl(long double x, int n); // scalbn(x, n); }
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float sinf(float x); // sin(x); }
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float sinhf(float x); // sinh(x); }
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float sqrtf(float x); // sqrt(x); }
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float tanf(float x); // tan(x); }
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float tanhf(float x); // tanh(x); }
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//float truncf(float x); // trunc(x); }
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#endif
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