487 lines
13 KiB
C
487 lines
13 KiB
C
/*-
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* Copyright (c) 2013 Jonas 'Sortie' Termansen.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _INCLUDE_MATH_H
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#define _INCLUDE_MATH_H
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#include <sys/cdefs.h>
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#ifndef __sortix_libm__
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#define __sortix_libm__ 1
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#endif
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#if defined(__sortix__)
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#include <__/limits.h>
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#include <__/wordsize.h>
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#elif defined(__GNU_LIBRARY__)
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#include <bits/wordsize.h>
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#endif
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#include <__/math.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define __fpmacro_unary_floating(__name, __arg0) \
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/* LINTED */ \
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((sizeof (__arg0) == sizeof (float)) \
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? __ ## __name ## f (__arg0) \
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: (sizeof (__arg0) == sizeof (double)) \
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? __ ## __name ## d (__arg0) \
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: __ ## __name ## l (__arg0))
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/* ANSI/POSIX macros */
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#define HUGE_VAL __builtin_huge_val()
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/* C99 macros */
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#if __USE_SORTIX || 1999 <= __USE_C
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#define FP_ILOGB0 (-__INT_MAX)
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#define FP_ILOGBNAN __INT_MAX
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#define HUGE_VALF __builtin_huge_valf()
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#define HUGE_VALL __builtin_huge_vall()
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#define INFINITY __builtin_inff()
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#define NAN __builtin_nanf("")
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/* TODO: What does this entail and is that really how this libm does it? */
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define math_errhandling MATH_ERREXCEPT
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/* TODO: Is it really true that fma is faster in these cases? */
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#if defined(__ia64__) || defined(__sparc64__)
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#define FP_FAST_FMA 1
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#endif
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#ifdef __ia64__
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#define FP_FAST_FMAL 1
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#endif
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#define FP_FAST_FMAF 1 /* TODO: Is this really true in all cases? */
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/* Symbolic constants to classify floating point numbers. */
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#define FP_INFINITE 0x00
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#define FP_NAN 0x01
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#define FP_NORMAL 0x02
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#define FP_SUBNORMAL 0x03
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#define FP_ZERO 0x04
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/* NetBSD extensions */
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#define _FP_LOMD 0x80 /* range for machine-specific classes */
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#define _FP_HIMD 0xff
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#define fpclassify(__x) __fpmacro_unary_floating(fpclassify, __x)
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#define isfinite(__x) __fpmacro_unary_floating(isfinite, __x)
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#define isinf(__x) __fpmacro_unary_floating(isinf, __x)
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#define isnan(__x) __fpmacro_unary_floating(isnan, __x)
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#define isnormal(__x) (fpclassify(__x) == FP_NORMAL)
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#define signbit(__x) __fpmacro_unary_floating(signbit, __x)
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#define isgreater(x, y) __builtin_isgreater((x), (y))
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#define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y))
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#define isless(x, y) __builtin_isless((x), (y))
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#define islessequal(x, y) __builtin_islessequal((x), (y))
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#define islessgreater(x, y) __builtin_islessgreater((x), (y))
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#define isunordered(x, y) __builtin_isunordered((x), (y))
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typedef __double_t double_t;
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typedef __float_t float_t;
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#endif /* __USE_SORTIX || 1999 <= __USE_C */
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/* XOPEN/SVID macros */
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#if __USE_SORTIX || __USE_XOPEN
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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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/* TODO: MAXFLOAT is obsoleted by FLT_MAX of float.h. */
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#define MAXFLOAT ((float)3.40282346638528860e+38)
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extern int signgam;
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#endif /* __USE_SORTIX || __USE_XOPEN */
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/* Various extensions inherited from NetBSD libm. Perhaps we should get rid of
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some of them or make them private to libm itself, or just rename them. */
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#if __USE_SORTIX
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enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
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#define _LIB_VERSION_TYPE enum fdversion
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#define _LIB_VERSION _fdlib_version
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/* if global variable _LIB_VERSION is not desirable, one may
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* change the following to be a constant by:
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* #define _LIB_VERSION_TYPE const enum version
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* In that case, after one initializes the value _LIB_VERSION (see
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* s_lib_version.c) during compile time, it cannot be modified
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* in the middle of a program
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*/
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extern _LIB_VERSION_TYPE _LIB_VERSION;
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#define _IEEE_ fdlibm_ieee
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#define _SVID_ fdlibm_svid
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#define _XOPEN_ fdlibm_xopen
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#define _POSIX_ fdlibm_posix
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#ifndef __cplusplus
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struct exception
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{
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int type;
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const char* name;
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double arg1;
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double arg2;
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double retval;
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};
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#endif
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#define HUGE MAXFLOAT
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/*
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* set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
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* (one may replace the following line by "#include <values.h>")
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*/
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#define X_TLOSS 1.41484755040568800000e+16
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#define DOMAIN 1
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#define SING 2
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#define OVERFLOW 3
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#define UNDERFLOW 4
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#define TLOSS 5
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#define PLOSS 6
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#endif /* __USE_SORTIX */
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/*
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* Most of these functions depend on the rounding mode and have the side
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* effect of raising floating-point exceptions, so they are not declared
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* as __pure2. In C99, FENV_ACCESS affects the purity of these functions.
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*/
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/*
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* ANSI/POSIX
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*/
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double acos(double);
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double asin(double);
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double atan(double);
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double atan2(double, double);
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double cos(double);
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double sin(double);
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double tan(double);
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double cosh(double);
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double sinh(double);
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double tanh(double);
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double exp(double);
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double exp2(double);
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double frexp(double, int*);
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double ldexp(double, int);
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double log(double);
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double log2(double);
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double log10(double);
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double modf(double, double*);
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double pow(double, double);
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double sqrt(double);
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double ceil(double);
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double fabs(double);
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double floor(double);
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double fmod(double, double);
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#if __USE_SORTIX || 1999 <= __USE_C || __USE_XOPEN
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double erf(double);
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double erfc(double);
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double gamma(double);
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double hypot(double, double);
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int finite(double);
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double j0(double);
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double j1(double);
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double jn(int, double);
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double lgamma(double);
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double y0(double);
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double y1(double);
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double yn(int, double);
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#endif /* __USE_SORTIX || 1999 <= __USE_C || __USE_XOPEN */
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#if __USE_SORTIX || 1999 <= __USE_C || 500 <= __USE_XOPEN
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double acosh(double);
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double asinh(double);
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double atanh(double);
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double cbrt(double);
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double expm1(double);
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int ilogb(double);
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double log1p(double);
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double logb(double);
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double nextafter(double, double);
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double remainder(double, double);
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double rint(double);
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double scalb(double, double);
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#endif /* __USE_SORTIX || 1999 <= __USE_C || 500 <= __USE_XOPEN */
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/*
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* ISO C99
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*/
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#if __USE_SORTIX || 1999 <= __USE_C
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/* 7.12.3.1 int fpclassify(real-floating x) */
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#define fpclassify(__x) __fpmacro_unary_floating(fpclassify, __x)
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/* 7.12.3.2 int isfinite(real-floating x) */
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#define isfinite(__x) __fpmacro_unary_floating(isfinite, __x)
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/* 7.12.3.5 int isnormal(real-floating x) */
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#define isnormal(__x) (fpclassify(__x) == FP_NORMAL)
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/* 7.12.3.6 int signbit(real-floating x) */
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#define signbit(__x) __fpmacro_unary_floating(signbit, __x)
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/* 7.12.4 trigonometric */
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float acosf(float);
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float asinf(float);
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float atanf(float);
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float atan2f(float, float);
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float cosf(float);
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float sinf(float);
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float tanf(float);
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/* 7.12.5 hyperbolic */
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float acoshf(float);
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float asinhf(float);
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float atanhf(float);
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float coshf(float);
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float sinhf(float);
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float tanhf(float);
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/* 7.12.6 exp / log */
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float expf(float);
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float exp2f(float);
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float expm1f(float);
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float frexpf(float, int*);
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int ilogbf(float);
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float ldexpf(float, int);
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float logf(float);
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float log2f(float);
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float log10f(float);
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float log1pf(float);
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float logbf(float);
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float modff(float, float*);
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float scalbnf(float, int);
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/* 7.12.7 power / absolute */
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float cbrtf(float);
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float fabsf(float);
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long double fabsl(long double);
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float hypotf(float, float);
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float powf(float, float);
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float sqrtf(float);
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/* 7.12.8 error / gamma */
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float erff(float);
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float erfcf(float);
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float lgammaf(float);
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float tgammaf(float);
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double tgamma(double);
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/* 7.12.9 nearest integer */
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float ceilf(float);
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float floorf(float);
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float rintf(float);
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double round(double);
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float roundf(float);
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double trunc(double);
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float truncf(float);
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long int lrint(double);
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long int lrintf(float);
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long long int llrint(double);
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long long int llrintf(float);
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long int lround(double);
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long int lroundf(float);
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long long int llround(double);
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long long int llroundf(float);
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/* 7.12.10 remainder */
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float fmodf(float, float);
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float remainderf(float, float);
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/* 7.12.10.3 The remquo functions */
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double remquo(double, double, int*);
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float remquof(float, float, int*);
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/* 7.12.11 manipulation */
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float copysignf(float, float);
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long double copysignl(long double, long double);
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double nan(const char*);
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float nanf(const char*);
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long double nanl(const char*);
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float nextafterf(float, float);
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long double nextafterl(long double, long double);
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double nexttoward(double, long double);
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/* 7.12.14 comparison */
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#define isunordered(x, y) __builtin_isunordered((x), (y))
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#define isgreater(x, y) __builtin_isgreater((x), (y))
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#define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y))
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#define isless(x, y) __builtin_isless((x), (y))
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#define islessequal(x, y) __builtin_islessequal((x), (y))
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#define islessgreater(x, y) __builtin_islessgreater((x), (y))
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double fdim(double, double);
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double fmax(double, double);
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double fmin(double, double);
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float fdimf(float, float);
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float fmaxf(float, float);
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float fminf(float, float);
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long double fdiml(long double, long double);
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long double fmaxl(long double, long double);
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long double fminl(long double, long double);
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/* 7.12.3.3 int isinf(real-floating x) */
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#define isinf(__x) __fpmacro_unary_floating(isinf, __x)
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/* 7.12.3.4 int isnan(real-floating x) */
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#define isnan(__x) __fpmacro_unary_floating(isnan, __x)
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#endif /* __USE_SORTIX || 1999 <= __USE_C */
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#if __USE_SORTIX
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#ifndef __cplusplus
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int matherr(struct exception*);
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#endif
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/*
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* IEEE Test Vector
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*/
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double significand(double);
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/*
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* Functions callable from C, intended to support IEEE arithmetic.
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*/
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double copysign(double, double);
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double scalbn(double, int);
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/*
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* BSD math library entry points
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*/
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double drem(double, double);
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#endif /* __USE_SORTIX */
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#if __USE_SORTIX /* or _REENTRANT */
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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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double gamma_r(double, int*);
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double lgamma_r(double, int*);
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#endif /* __USE_SORTIX */
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#if __USE_SORTIX
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/* float versions of ANSI/POSIX functions */
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float gammaf(float);
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int isinff(float);
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int isnanf(float);
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int finitef(float);
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float j0f(float);
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float j1f(float);
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float jnf(int, float);
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float y0f(float);
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float y1f(float);
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float ynf(int, float);
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float scalbf(float, float);
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/*
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* float version of IEEE Test Vector
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*/
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float significandf(float);
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/*
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* float versions of BSD math library entry points
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*/
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float dremf(float, float);
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#endif /* __USE_SORTIX */
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#if __USE_SORTIX /* or _REENTRANT */
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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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float gammaf_r(float, int*);
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float lgammaf_r(float, int*);
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#endif /* __USE_SORTIX */
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/*
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* Library implementation
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*/
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int __fpclassifyf(float);
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int __fpclassifyd(double);
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int __isfinitef(float);
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int __isfinited(double);
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int __isinff(float);
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int __isinfd(double);
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int __isnanf(float);
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int __isnand(double);
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int __signbitf(float);
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int __signbitd(double);
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int __fpclassifyl(long double);
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int __isfinitel(long double);
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int __isinfl(long double);
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int __isnanl(long double);
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int __signbitl(long double);
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int ilogbl(long double);
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long double logbl(long double);
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long double scalbnl(long double, int);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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