harvey/power/include/ape/math.h

/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#ifndef __MATH
#define __MATH
#pragma lib "/$M/lib/ape/libap.a"

/* a HUGE_VAL appropriate for IEEE double-precision */
/* the correct value, 1.797693134862316e+308, causes a ken overflow */
#define HUGE_VAL 1.79769313486231e+308

#ifdef __cplusplus
extern "C" {
#endif

extern double acos(double);
extern double asin(double);
extern double atan(double);
extern double atan2(double, double);
extern double cos(double);
extern double hypot(double, 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 NaN(void);
extern int isNaN(double);
extern double Inf(int);
extern int isInf(double, int);

#ifdef _RESEARCH_SOURCE
/* does >> treat left operand as unsigned ? */
#define Unsigned_Shifts 1
#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) */

extern double hypot(double, double);
extern double erf(double);
extern double erfc(double);
extern double j0(double);
extern double y0(double);
extern double j1(double);
extern double y1(double);
extern double jn(int, double);
extern double yn(int, double);

#endif


#ifdef __cplusplus
}
#endif

#define isnan(x) isNaN(x)
#define isinf(x) isInf(x, 0)

#endif /* __MATH */