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/* $OpenBSD: math.h,v 1.22 2008/09/09 20:42:55 martynas 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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#include <sys/_types.h>
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#include <sys/cdefs.h>
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#include <sys/limits.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 *)(void *)__infinity)
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/*
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* C99
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*/
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#if __ISO_C_VISIBLE >= 1999
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typedef __double_t double_t;
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typedef __float_t float_t;
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#define HUGE_VALF ((float)HUGE_VAL)
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#define HUGE_VALL ((long double)HUGE_VAL)
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#define INFINITY HUGE_VALF
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#ifndef __vax__
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extern char __nan[];
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#define NAN (*(float *)(void *)__nan)
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#endif /* !__vax__ */
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#define FP_INFINITE 0x01
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#define FP_NAN 0x02
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#define FP_NORMAL 0x04
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#define FP_SUBNORMAL 0x08
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#define FP_ZERO 0x10
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#define FP_ILOGB0 (-INT_MAX)
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#define FP_ILOGBNAN INT_MAX
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#define fpclassify(x) \
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((sizeof (x) == sizeof (float)) ? \
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__fpclassifyf(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__fpclassify(x) \
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: __fpclassifyl(x))
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#define isfinite(x) \
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((sizeof (x) == sizeof (float)) ? \
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__isfinitef(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__isfinite(x) \
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: __isfinitel(x))
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#define isnormal(x) \
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((sizeof (x) == sizeof (float)) ? \
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__isnormalf(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__isnormal(x) \
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: __isnormall(x))
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#define signbit(x) \
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((sizeof (x) == sizeof (float)) ? \
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__signbitf(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__signbit(x) \
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: __signbitl(x))
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#define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
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#define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
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#define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
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#define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
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#define islessgreater(x, y) (!isunordered((x), (y)) && \
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((x) > (y) || (y) > (x)))
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#define isunordered(x, y) (isnan(x) || isnan(y))
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#endif /* __ISO_C_VISIBLE >= 1999 */
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#define isinf(x) \
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((sizeof (x) == sizeof (float)) ? \
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isinff(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__isinf(x) \
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: __isinfl(x))
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#define isnan(x) \
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((sizeof (x) == sizeof (float)) ? \
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isnanf(x) \
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: (sizeof (x) == sizeof (double)) ? \
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__isnan(x) \
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: __isnanl(x))
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/*
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* XOPEN/SVID
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*/
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#if __BSD_VISIBLE || __XPG_VISIBLE
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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 /* __vax__ */
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extern int signgam;
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#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
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#if __BSD_VISIBLE
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#define HUGE MAXFLOAT
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#endif /* __BSD_VISIBLE */
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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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/*
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* C99
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*/
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#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE
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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 exp2(double);
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extern double expm1(double);
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extern int ilogb(double);
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extern double log1p(double);
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extern double log2(double);
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extern double logb(double);
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extern double scalbn(double, int);
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#if 0
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extern double scalbln(double, long int);
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#endif
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extern double cbrt(double);
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extern double hypot(double, double);
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extern double erf(double);
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extern double erfc(double);
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extern double lgamma(double);
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extern double tgamma(double);
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#if 0
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extern double nearbyint(double);
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#endif
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extern double rint(double);
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extern long int lrint(double);
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extern long long int llrint(double);
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extern double round(double);
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extern long int lround(double);
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extern long long int llround(double);
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extern double trunc(double);
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extern double remainder(double, double);
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extern double remquo(double, double, int *);
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extern double copysign(double, double);
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extern double nan(const char *);
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extern double nextafter(double, double);
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#if 0
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extern double nexttoward(double, long double);
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#endif
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extern double fdim(double, double);
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extern double fmax(double, double);
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extern double fmin(double, double);
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#if 0
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extern double fma(double, double, double);
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#endif
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#endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE */
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#if __BSD_VISIBLE || __XPG_VISIBLE
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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 scalb(double, 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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#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
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#if __BSD_VISIBLE || __XPG_VISIBLE <= 500
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extern double gamma(double);
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#endif /* __BSD_VISIBLE || __XPG_VISIBLE <= 500 */
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/*
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* BSD math library entry points
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*/
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#if __BSD_VISIBLE
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extern double drem(double, double);
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extern int finite(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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extern double gamma_r(double, int *);
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extern double lgamma_r(double, int *);
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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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#endif /* __BSD_VISIBLE */
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/*
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* Float versions of C99 functions
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*/
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#if __ISO_C_VISIBLE >= 1999
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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 acoshf(float);
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extern float asinhf(float);
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extern float atanhf(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 exp2f(float);
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extern float expm1f(float);
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extern float frexpf(float, int *);
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extern int ilogbf(float);
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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 log1pf(float);
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extern float log2f(float);
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extern float logbf(float);
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extern float modff(float, float *);
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extern float scalbnf(float, int);
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#if 0
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extern float scalblnf(float, long int);
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#endif
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extern float cbrtf(float);
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extern float fabsf(float);
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extern float hypotf(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 erff(float);
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extern float erfcf(float);
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extern float lgammaf(float);
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extern float tgammaf(float);
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extern float ceilf(float);
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extern float floorf(float);
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#if 0
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extern float nearbyintf(float);
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#endif
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extern float rintf(float);
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extern long int lrintf(float);
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extern long long int llrintf(float);
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extern float roundf(float);
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extern long int lroundf(float);
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extern long long int llroundf(float);
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extern float truncf(float);
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extern float fmodf(float, float);
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extern float remainderf(float, float);
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extern float remquof(float, float, int *);
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extern float copysignf(float, float);
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extern float nanf(const char *);
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extern float nextafterf(float, float);
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#if 0
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extern float nexttowardf(float, long double);
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#endif
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extern float fdimf(float, float);
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extern float fmaxf(float, float);
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extern float fminf(float, float);
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#if 0
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extern float fmaf(float, float, float);
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#endif
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#endif /* __ISO_C_VISIBLE >= 1999 */
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#if __BSD_VISIBLE || __XPG_VISIBLE
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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 scalbf(float, 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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#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
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#if __BSD_VISIBLE || __XPG_VISIBLE <= 500
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extern float gammaf(float);
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#endif /* __BSD_VISIBLE || __XPG_VISIBLE <= 500 */
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/*
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* Float versions of BSD math library entry points
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*/
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#if __BSD_VISIBLE
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extern float dremf(float, float);
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extern int finitef(float);
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extern int isinff(float);
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extern int isnanf(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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extern float gammaf_r(float, int *);
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extern float lgammaf_r(float, int *);
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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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#endif /* __BSD_VISIBLE */
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/*
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* Long double versions of C99 functions
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*/
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#if __ISO_C_VISIBLE >= 1999
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#if 0
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extern long double acosl(long double);
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extern long double asinl(long double);
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extern long double atanl(long double);
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extern long double atan2l(long double, long double);
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extern long double cosl(long double);
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extern long double sinl(long double);
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extern long double tanl(long double);
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extern long double acoshl(long double);
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extern long double asinhl(long double);
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extern long double atanhl(long double);
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extern long double coshl(long double);
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extern long double sinhl(long double);
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extern long double tanhl(long double);
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extern long double expl(long double);
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extern long double exp2l(long double);
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extern long double expm1l(long double);
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extern long double frexpl(long double, int *);
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extern int ilogbl(long double);
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extern long double ldexpl(long double, int);
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extern long double logl(long double);
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extern long double log10l(long double);
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extern long double log1pl(long double);
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extern long double log2l(long double);
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extern long double logbl(long double);
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extern long double modfl(long double, long double *);
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extern long double scalbnl(long double, int);
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extern long double scalblnl(long double, long int);
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extern long double cbrtl(long double);
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extern long double fabsl(long double);
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extern long double hypotl(long double, long double);
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extern long double powl(long double, long double);
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extern long double sqrtl(long double);
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extern long double erfl(long double);
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extern long double erfcl(long double);
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extern long double lgammal(long double);
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extern long double tgammal(long double);
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extern long double ceill(long double);
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extern long double floorl(long double);
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extern long double nearbyintl(long double);
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extern long double rintl(long double);
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extern long int lrintl(long double);
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extern long long int llrintl(long double);
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extern long double roundl(long double);
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extern long int lroundl(long double);
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extern long long int llroundl(long double);
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extern long double truncl(long double);
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extern long double fmodl(long double, long double);
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extern long double remainderl(long double, long double);
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extern long double remquol(long double, long double, int *);
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extern long double copysignl(long double, long double);
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extern long double nanl(const char *);
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extern long double nextafterl(long double, long double);
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extern long double nexttowardl(long double, long double);
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extern long double fdiml(long double, long double);
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extern long double fmaxl(long double, long double);
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extern long double fminl(long double, long double);
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extern long double fmal(long double, long double, long double);
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#endif
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#endif /* __ISO_C_VISIBLE >= 1999 */
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/*
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* Library implementation
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*/
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extern int __fpclassify(double);
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extern int __fpclassifyf(float);
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extern int __fpclassifyl(long double);
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extern int __isfinite(double);
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extern int __isfinitef(float);
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extern int __isfinitel(long double);
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extern int __isinf(double);
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extern int __isinfl(long double);
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extern int __isnan(double);
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extern int __isnanl(long double);
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extern int __isnormal(double);
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extern int __isnormalf(float);
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extern int __isnormall(long double);
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extern int __signbit(double);
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extern int __signbitf(float);
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extern int __signbitl(long double);
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#if __BSD_VISIBLE && defined(__vax__)
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extern double infnan(int);
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#endif /* __BSD_VISIBLE && defined(__vax__) */
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__END_DECLS
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#endif /* !_MATH_H_ */
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