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/* $OpenBSD: math.h,v 1.15 2008/06/11 21:16:43 martynas Exp $ */
/*
* ====================================================
* 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
*/
#ifndef _MATH_H_
#define _MATH_H_
#include <sys/cdefs.h>
/*
* ANSI/POSIX
*/
extern char __infinity[];
#define HUGE_VAL (*(double *)(void *)__infinity)
/*
* C99
*/
/* XXX just appease the committee for now, needs proper defs... */
typedef float float_t;
typedef double double_t;
#define FLT_EVAL_METHOD (-1)
/*
* XOPEN/SVID
*/
#if __BSD_VISIBLE || __XPG_VISIBLE
#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) */
#ifdef __vax__
#define MAXFLOAT ((float)1.70141173319264430e+38)
#else
#define MAXFLOAT ((float)3.40282346638528860e+38)
#endif
extern int signgam;
#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
#if __BSD_VISIBLE
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
#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 <values.h>
* (one may replace the following line by "#include <values.h>")
*/
#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 /* __BSD_VISIBLE */
__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);
extern double round(double);
extern double trunc(double);
#if __BSD_VISIBLE || __XPG_VISIBLE
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 tgamma(double);
extern double y0(double);
extern double y1(double);
extern double yn(int, double);
#if __BSD_VISIBLE || __XPG_VISIBLE >= 500
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);
#ifdef __LIBM_PRIVATE
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 long int lrint(double);
extern long int lround(double);
extern long long int llrint(double);
extern long long int llround(double);
extern double scalbn(double, int);
/*
* BSD math library entry points
*/
extern double cabs();
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.
*/
#if __BSD_VISIBLE || defined(_REENTRANT)
extern double gamma_r(double, int *);
extern double lgamma_r(double, int *);
#endif /* __BSD_VISIBLE || _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 roundf(float);
extern float truncf(float);
extern float erff(float);
extern float erfcf(float);
extern float gammaf(float);
extern float hypotf(float, float);
extern int isinff(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 tgammaf(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 long int lrintf(float);
extern long int lroundf(float);
extern long long int llrintf(float);
extern long long int llroundf(float);
extern float scalbnf(float, int);
/*
* float versions of BSD math library entry points
*/
extern float cabsf ();
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.
*/
#if __BSD_VISIBLE || defined(_REENTRANT)
extern float gammaf_r(float, int *);
extern float lgammaf_r(float, int *);
#endif /* __BSD_VISIBLE || _REENTRANT */
#endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 500 */
#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
__END_DECLS
#endif /* _MATH_H_ */
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