/* $NetBSD: math.h,v 1.40 2005/02/03 04:39:32 perry 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. * ==================================================== * * $NetBSD: math.h,v 1.40 2005/02/03 04:39:32 perry Exp $ * $DragonFly: src/include/math.h,v 1.8 2006/05/17 14:06:36 swildner Exp $ */ /* * @(#)fdlibm.h 5.1 93/09/24 */ #ifndef _MATH_H_ #define _MATH_H_ #include #if __GNUC_PREREQ__(3, 3) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800) #define __MATH_BUILTIN_CONSTANTS #endif #if __GNUC_PREREQ__(3, 0) && !defined(__INTEL_COMPILER) #define __MATH_BUILTIN_RELOPS #endif union __float_u { unsigned char __dummy[sizeof(float)]; float __val; }; union __double_u { unsigned char __dummy[sizeof(double)]; double __val; }; union __long_double_u { unsigned char __dummy[sizeof(long double)]; long double __val; }; #include #ifdef __HAVE_LONG_DOUBLE #define __fpmacro_unary_floating(__name, __arg0) \ /* LINTED */ \ ((sizeof (__arg0) == sizeof (float)) \ ? __ ## __name ## f (__arg0) \ : (sizeof (__arg0) == sizeof (double)) \ ? __ ## __name ## d (__arg0) \ : __ ## __name ## l (__arg0)) #else #define __fpmacro_unary_floating(__name, __arg0) \ /* LINTED */ \ ((sizeof (__arg0) == sizeof (float)) \ ? __ ## __name ## f (__arg0) \ : __ ## __name ## d (__arg0)) #endif /* __HAVE_LONG_DOUBLE */ /* * ANSI/POSIX */ /* 7.12#3 HUGE_VAL, HUGELF, HUGE_VALL */ extern __const union __double_u __infinity; #ifdef __MATH_BUILTIN_CONSTANTS #define HUGE_VAL __builtin_huge_val() #else #define HUGE_VAL __infinity.__val #endif /* * ISO C99 */ #if __ISO_C_VISIBLE >= 1999 /* 7.12#3 HUGE_VAL, HUGELF, HUGE_VALL */ extern __const union __float_u __infinityf; #ifdef __MATH_BUILTIN_CONSTANTS #define HUGE_VALF __builtin_huge_valf() #else #define HUGE_VALF __infinityf.__val #endif extern __const union __long_double_u __infinityl; #define HUGE_VALL __infinityl.__val /* 7.12#4 INFINITY */ #ifdef __MATH_BUILTIN_CONSTANTS #define INFINITY __builtin_inf() #elif defined(__INFINITY) #define INFINITY __INFINITY /* float constant which overflows */ #else #define INFINITY HUGE_VALF /* positive infinity */ #endif /* __INFINITY */ /* 7.12#5 NAN: a quiet NaN, if supported */ #ifdef __MATH_BUILTIN_CONSTANTS #define NAN __builtin_nan("") #elif defined(__HAVE_NANF) extern __const union __float_u __nanf; #define NAN __nanf.__val #endif /* __HAVE_NANF */ /* 7.12#6 number classification macros */ #define FP_INFINITE 0x00 #define FP_NAN 0x01 #define FP_NORMAL 0x02 #define FP_SUBNORMAL 0x03 #define FP_ZERO 0x04 /* NetBSD extensions */ #define _FP_LOMD 0x80 /* range for machine-specific classes */ #define _FP_HIMD 0xff #endif /* ISO C99 */ /* * XOPEN/SVID */ #if __XSI_VISIBLE > 0 #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) */ #define MAXFLOAT ((float)3.40282346638528860e+38) extern int signgam; #endif /* _XSI_VISIBLE */ #if __DF_VISIBLE #define HUGE MAXFLOAT /* * set X_TLOSS = pi*2**52, which is possibly defined in * (one may replace the following line by "#include ") */ #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 /* __DF_VISIBLE */ __BEGIN_DECLS /* * ANSI/POSIX */ double acos(double); double asin(double); double atan(double); double atan2(double, double); double cos(double); double sin(double); double tan(double); double cosh(double); double sinh(double); double tanh(double); double exp(double); double frexp(double, int *); double ldexp(double, int); double log(double); double log10(double); double modf(double, double *); double pow(double, double); double sqrt(double); double ceil(double); double fabs(double); double floor(double); double fmod(double, double); #if __XSI_VISIBLE > 0 double erf(double); double erfc(double); double gamma(double); double hypot(double, double); int finite(double); double j0(double); double j1(double); double jn(int, double); double lgamma(double); double y0(double); double y1(double); double yn(int, double); #endif /* __XSI_VISIBLE */ #if __XSI_VISIBLE >= 500 double acosh(double); double asinh(double); double atanh(double); double cbrt(double); double expm1(double); int ilogb(double); double log1p(double); double logb(double); double nextafter(double, double); double remainder(double, double); double rint(double); double scalb(double, double); #endif /* __XSI_VISIBLE >= 500 */ /* * ISO C99 */ #if __ISO_C_VISIBLE >= 1999 /* 7.12.3.1 int fpclassify(real-floating x) */ #define fpclassify(__x) __fpmacro_unary_floating(fpclassify, __x) /* 7.12.3.2 int isfinite(real-floating x) */ #define isfinite(__x) __fpmacro_unary_floating(isfinite, __x) /* 7.12.3.5 int isnormal(real-floating x) */ #define isnormal(__x) (fpclassify(__x) == FP_NORMAL) /* 7.12.3.6 int signbit(real-floating x) */ #define signbit(__x) __fpmacro_unary_floating(signbit, __x) /* 7.12.4 trigonometric */ float acosf(float); float asinf(float); float atanf(float); float atan2f(float, float); float cosf(float); float sinf(float); float tanf(float); /* 7.12.5 hyperbolic */ float acoshf(float); float asinhf(float); float atanhf(float); float coshf(float); float sinhf(float); float tanhf(float); /* 7.12.6 exp / log */ float expf(float); float expm1f(float); float frexpf(float, int *); int ilogbf(float); float ldexpf(float, int); float logf(float); float log10f(float); float log1pf(float); float logbf(float); float modff(float, float *); float scalbnf(float, int); /* 7.12.7 power / absolute */ float cbrtf(float); float fabsf(float); float hypotf(float, float); float powf(float, float); float sqrtf(float); /* 7.12.8 error / gamma */ float erff(float); float erfcf(float); float lgammaf(float); /* 7.12.9 nearest integer */ float ceilf(float); float floorf(float); float rintf(float); double round(double); float roundf(float); long int lrint(double); long int lrintf(float); /* LONGLONG */ long long int llrint(double); /* LONGLONG */ long long int llrintf(float); long int lround(double); long int lroundf(float); /* LONGLONG */ long long int llround(double); /* LONGLONG */ long long int llroundf(float); /* 7.12.10 remainder */ float fmodf(float, float); float remainderf(float, float); /* 7.2.11 manipulation */ float copysignf(float, float); float nextafterf(float, float); #endif /* __ISO_C_VISIBLE >= 1999 */ #if __ISO_C_VISIBLE >= 1999 /* 7.12.3.3 int isinf(real-floating x) */ #ifdef __isinf #define isinf(__x) __isinf(__x) #else #define isinf(__x) __fpmacro_unary_floating(isinf, __x) #endif /* 7.12.3.4 int isnan(real-floating x) */ #ifdef __isnan #define isnan(__x) __isnan(__x) #else #define isnan(__x) __fpmacro_unary_floating(isnan, __x) #endif /* 7.12.14 Comparision macros */ #ifdef __MATH_BUILTIN_RELOPS #define isgreater(x, y) __builtin_isgreater((x), (y)) #define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y)) #define isless(x, y) __builtin_isless((x), (y)) #define islessequal(x, y) __builtin_islessequal((x), (y)) #define islessgreater(x, y) __builtin_islessgreater((x), (y)) #define isunordered(x, y) __builtin_isunordered((x), (y)) #else #define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y)) #define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y)) #define isless(x, y) (!isunordered((x), (y)) && (x) < (y)) #define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y)) #define islessgreater(x, y) (!isunordered((x), (y)) && \ ((x) > (y) || (y) > (x))) #define isunordered(x, y) (isnan(x) || isnan(y)) #endif /* __MATH_BUILTIN_RELOPS */ #endif /* __ISO_C_VISIBLE >= 1999 */ #if __DF_VISIBLE /* * IEEE Test Vector */ double significand(double); /* * Functions callable from C, intended to support IEEE arithmetic. */ double copysign(double, double); double scalbn(double, int); /* * BSD math library entry points */ double drem(double, double); /* * Reentrant version of gamma & lgamma; passes signgam back by reference * as the second argument; user must allocate space for signgam. */ double gamma_r(double, int *); double lgamma_r(double, int *); #endif /* __DF_VISIBLE */ #if __DF_VISIBLE /* float versions of ANSI/POSIX functions */ float gammaf(float); int finitef(float); float j0f(float); float j1f(float); float jnf(int, float); float y0f(float); float y1f(float); float ynf(int, float); float scalbf(float, float); /* * float version of IEEE Test Vector */ float significandf(float); /* * float versions of BSD math library entry points */ float dremf(float, float); /* * Float versions of reentrant version of gamma & lgamma; passes * signgam back by reference as the second argument; user must * allocate space for signgam. */ float gammaf_r(float, int *); float lgammaf_r(float, int *); #endif /* __DF_VISIBLE */ /* * Library implementation */ int __fpclassifyf(float); int __fpclassifyd(double); int __isfinitef(float); int __isfinited(double); int __isinff(float); int __isinfd(double); int __isnanf(float); int __isnand(double); int __signbitf(float); int __signbitd(double); #ifdef __HAVE_LONG_DOUBLE int __fpclassifyl(long double); int __isfinitel(long double); int __isinfl(long double); int __isnanl(long double); int __signbitl(long double); #endif __END_DECLS #endif /* _MATH_H_ */