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math.h
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math.h
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/*
* Copyright (c) 1985, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)math.h 8.1 (Berkeley) 6/2/93
*/
#ifndef _MATH_H_
#define _MATH_H_
#if defined(vax) || defined(tahoe) /* DBL_MAX from float.h */
#define HUGE_VAL 1.701411834604692294E+38
#else
#define HUGE_VAL 1e500 /* IEEE: positive infinity */
#endif
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
#if defined(vax) || defined(tahoe)
/*
* HUGE for the VAX and Tahoe converts to the largest possible F-float value.
* This implies an understanding of the conversion behavior of atof(3). It
* was defined to be the largest float so that overflow didn't occur when it
* was assigned to a single precision number. HUGE_VAL is strongly preferred.
*/
#define HUGE 1.701411733192644270E+38
#else
#define HUGE HUGE_VAL
#endif
#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) */
#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
#include <sys/cdefs.h>
/*
* Most of these functions have the side effect of setting errno, except
* in the (broken) BSD libm, so they not declared as __pure2.
*/
__BEGIN_DECLS
double acos __P((double));
double asin __P((double));
double atan __P((double));
double atan2 __P((double, double));
double ceil __P((double));
double cos __P((double));
double cosh __P((double));
double exp __P((double));
double fabs __P((double));
double floor __P((double));
double fmod __P((double, double));
double frexp __P((double, int *)); /* fundamentally !__pure2 */
double ldexp __P((double, int));
double log __P((double));
double log10 __P((double));
double modf __P((double, double *)); /* fundamentally !__pure2 */
double pow __P((double, double));
double sin __P((double));
double sinh __P((double));
double sqrt __P((double));
double tan __P((double));
double tanh __P((double));
/*
* These functions are non-ANSI so they can be "right". The ones that
* don't set errno in [lib]msun are declared as __pure2.
*/
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
double acosh __P((double));
double asinh __P((double));
double atanh __P((double));
double cabs(); /* we can't describe cabs()'s argument properly */
double cbrt __P((double)) __pure2;
double copysign __P((double, double)) __pure2;
double drem __P((double, double));
double erf __P((double));
double erfc __P((double)) __pure2;
double expm1 __P((double)) __pure2;
int finite __P((double)) __pure2;
double hypot __P((double, double));
#if defined(vax) || defined(tahoe)
double infnan __P((int));
#endif
int isinf __P((double)) __pure2;
int isnan __P((double)) __pure2;
double j0 __P((double));
double j1 __P((double));
double jn __P((int, double));
double lgamma __P((double));
double log1p __P((double)) __pure2;
double logb __P((double)) __pure2;
double rint __P((double)) __pure2;
double scalb __P((double, int));
double y0 __P((double));
double y1 __P((double));
double yn __P((int, double));
#endif
__END_DECLS
#endif /* !_MATH_H_ */