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/* $OpenBSD: math.h,v 1.9 2005/01/06 20:36:23 espie Exp $ */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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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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/*
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* from: @(#)fdlibm.h 5.1 93/09/24
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*/
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#ifndef _MATH_H_
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#define _MATH_H_
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/*
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* ANSI/POSIX
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*/
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extern char __infinity[];
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#define HUGE_VAL (*(double *) __infinity)
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/*
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* C99
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*/
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/* XXX just appease the committee for now, needs proper defs... */
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typedef float float_t;
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typedef double double_t;
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#define FLT_EVAL_METHOD (-1)
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/*
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* XOPEN/SVID
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*/
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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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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#ifdef __vax__
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#define MAXFLOAT ((float)1.70141173319264430e+38)
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#else
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#define MAXFLOAT ((float)3.40282346638528860e+38)
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#endif
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extern int signgam;
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#if !defined(_XOPEN_SOURCE)
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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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#ifndef __cplusplus
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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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#endif
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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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#endif /* !_XOPEN_SOURCE */
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#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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/*
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* ANSI/POSIX
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*/
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extern double acos(double);
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extern double asin(double);
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extern double atan(double);
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extern double atan2(double, double);
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extern double cos(double);
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extern double sin(double);
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extern double tan(double);
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extern double cosh(double);
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extern double sinh(double);
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extern double tanh(double);
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extern double exp(double);
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extern double frexp(double, int *);
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extern double ldexp(double, int);
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extern double log(double);
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extern double log10(double);
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extern double modf(double, double *);
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extern double pow(double, double);
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extern double sqrt(double);
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extern double ceil(double);
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extern double fabs(double);
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extern double floor(double);
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extern double fmod(double, double);
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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extern double erf(double);
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extern double erfc(double);
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extern double gamma(double);
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extern double hypot(double, double);
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extern int isinf(double);
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extern int isnan(double);
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extern int finite(double);
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extern double j0(double);
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extern double j1(double);
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extern double jn(int, double);
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extern double lgamma(double);
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extern double y0(double);
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extern double y1(double);
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extern double yn(int, double);
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#if !defined(_XOPEN_SOURCE)
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extern double acosh(double);
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extern double asinh(double);
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extern double atanh(double);
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extern double cbrt(double);
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extern double logb(double);
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extern double nextafter(double, double);
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extern double remainder(double, double);
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extern double scalb(double, double);
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#ifdef __LIBM_PRIVATE
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extern int matherr(struct exception *);
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#endif
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/*
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* IEEE Test Vector
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*/
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extern double significand(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(double, double);
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extern int ilogb(double);
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extern double rint(double);
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extern double scalbn(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 cabs();
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extern double drem(double, double);
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extern double expm1(double);
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extern double log1p(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(double, int *);
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extern double lgamma_r(double, int *);
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#endif /* _REENTRANT */
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/* float versions of ANSI/POSIX functions */
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extern float acosf(float);
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extern float asinf(float);
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extern float atanf(float);
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extern float atan2f(float, float);
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extern float cosf(float);
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extern float sinf(float);
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extern float tanf(float);
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extern float coshf(float);
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extern float sinhf(float);
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extern float tanhf(float);
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extern float expf(float);
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extern float frexpf(float, int *);
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extern float ldexpf(float, int);
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extern float logf(float);
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extern float log10f(float);
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extern float modff(float, float *);
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extern float powf(float, float);
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extern float sqrtf(float);
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extern float ceilf(float);
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extern float fabsf(float);
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extern float floorf(float);
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extern float fmodf(float, float);
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extern float erff(float);
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extern float erfcf(float);
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extern float gammaf(float);
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extern float hypotf(float, float);
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extern int isinff(float);
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extern int isnanf(float);
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extern int finitef(float);
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extern float j0f(float);
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extern float j1f(float);
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extern float jnf(int, float);
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extern float lgammaf(float);
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extern float y0f(float);
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extern float y1f(float);
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extern float ynf(int, float);
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extern float acoshf(float);
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extern float asinhf(float);
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extern float atanhf(float);
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extern float cbrtf(float);
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extern float logbf(float);
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extern float nextafterf(float, float);
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extern float remainderf(float, float);
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extern float scalbf(float, float);
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/*
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* float version of IEEE Test Vector
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*/
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extern float significandf(float);
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/*
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* Float versions of functions callable from C, intended to support
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* IEEE arithmetic.
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*/
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extern float copysignf(float, float);
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extern int ilogbf(float);
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extern float rintf(float);
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extern float scalbnf(float, int);
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/*
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* float versions of BSD math library entry points
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*/
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extern float cabsf ();
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extern float dremf(float, float);
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extern float expm1f(float);
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extern float log1pf(float);
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/*
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* Float versions of reentrant version of gamma & lgamma; passes
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* signgam back by reference as the second argument; user must
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* allocate space for signgam.
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*/
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#ifdef _REENTRANT
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extern float gammaf_r(float, int *);
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extern float lgammaf_r(float, int *);
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#endif /* _REENTRANT */
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#endif /* !_XOPEN_SOURCE */
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#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
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__END_DECLS
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#endif /* _MATH_H_ */
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