209 lines
5.5 KiB
C
209 lines
5.5 KiB
C
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/*
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fastmath.h - header file for the FastMath routines. These are high
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performance math routines that don't bother checking for
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most error conditions and never call matherr. They are
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coded for maximum speed and most are written in assembly.
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These functions are never exported from the RTLDLL, which
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means that they always get linked directly into the PE file
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which is being created.
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*/
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/*
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* C/C++ Run Time Library - Version 10.0
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*
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* Copyright (c) 1999, 2000 by Inprise Corporation
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* All Rights Reserved.
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*
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*/
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/* $Revision: 9.4 $ */
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#ifndef __FASTMATH_H
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#define __FASTMATH_H
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#include <_defs.h>
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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 _FMAPI _RTLENTRY /* FastMath API */
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/* _FMAPI functions are never exported from the RTLDLL, they always get linked
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into the PE file directly.
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*/
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/* double routines: */
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double _FMAPI _fm_acos (double __x);
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double _FMAPI _fm_asin (double __x);
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double _FMAPI _fm_atan (double __x);
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double _FMAPI _fm_atan2 (double __y, double __x);
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double _FMAPI _fm_cos (double __x);
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double _FMAPI _fm_cosh (double __x);
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double _FMAPI _fm_exp (double __x);
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double _FMAPI _fm_fabs (double __x);
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double _FMAPI _fm_frexp (double __x, int * __exponent);
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double _FMAPI _fm_hypot (double __x, double __y);
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double _FMAPI _fm_ldexp (double __x, int __exponent);
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double _FMAPI _fm_log (double __x);
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double _FMAPI _fm_log10 (double __x);
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double _FMAPI _fm_sin (double __x);
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double _FMAPI _fm_sinh (double __x);
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double _FMAPI _fm_sqrt (double __x);
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double _FMAPI _fm_tan (double __x);
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double _FMAPI _fm_tanh (double __x);
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/* long double routines: */
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long double _FMAPI _fm_acosl (long double __x);
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long double _FMAPI _fm_asinl (long double __x);
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long double _FMAPI _fm_atan2l (long double __x, long double __y);
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long double _FMAPI _fm_atanl (long double __x);
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long double _FMAPI _fm_coshl (long double __x);
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long double _FMAPI _fm_cosl (long double __x);
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long double _FMAPI _fm_expl (long double __x);
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long double _FMAPI _fm_fabsl (long double __x);
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long double _FMAPI _fm_frexpl (long double __x, int * __exponent);
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long double _FMAPI _fm_hypotl (long double __x, long double __y);
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long double _FMAPI _fm_ldexpl (long double __x, int __exponent);
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long double _FMAPI _fm_log10l (long double __x);
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long double _FMAPI _fm_logl (long double __x);
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long double _FMAPI _fm_sinhl (long double __x);
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long double _FMAPI _fm_sinl (long double __x);
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long double _FMAPI _fm_sqrtl (long double __x);
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long double _FMAPI _fm_tanhl (long double __x);
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long double _FMAPI _fm_tanl (long double __x);
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/* Additional fast functions, not directly supported in the regular RTL: */
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/* double routines: */
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void _FMAPI _fm_sincos(double __a, double *__x, double *__y);
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/* long double routines: */
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void _FMAPI _fm_sincosl(long double __a, long double *__x, long double *__y);
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long double _FMAPI _fm_atanhl (long double __x);
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long double _FMAPI _fm_acoshl (long double __x);
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long double _FMAPI _fm_asinhl (long double __x);
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/* Special inline function that performs an intrinsic FWAIT instruction */
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__inline void _fm_fwait(void)
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{
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__emit__(0x9B); /* asm FWAIT */
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}
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/* _fm_init can be called to mask all fpu exceptions prior to using the
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FastMath routines.
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*/
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unsigned int _FMAPI _fm_init(void);
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/* If you don't want the standard C function names re-mapped to the FastMath
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versions, then define _FM_NO_REMAP. The FastMath routines can still be
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called with their _fm_xxx names.
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*/
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#ifndef _FM_NO_REMAP
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/* Undefine the standard functions names in preparation for re-mapping */
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#undef acos
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#undef asin
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#undef atan
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#undef atan2
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#undef cos
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#undef cosh
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#undef exp
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#undef fabs
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#undef frexp
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#undef hypot
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#undef ldexp
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#undef log
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#undef log10
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#undef sin
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#undef sinh
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#undef sqrt
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#undef tan
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#undef tanh
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#undef sincos
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#undef acosl
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#undef asinl
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#undef atan2l
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#undef atanl
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#undef coshl
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#undef cosl
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#undef expl
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#undef fabsl
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#undef frexpl
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#undef hypotl
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#undef ldexpl
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#undef log10l
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#undef logl
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#undef sinhl
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#undef sinl
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#undef sqrtl
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#undef tanhl
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#undef tanl
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#undef sincosl
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#undef atanhl
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#undef acoshl
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#undef asinhl
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/* now re-map the standard names to their FastMath equivalents */
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#define acos _fm_acos
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#define asin _fm_asin
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#define atan _fm_atan
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#define atan2 _fm_atan2
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#define cos _fm_cos
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#define cosh _fm_cosh
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#define exp _fm_exp
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#define fabs _fm_fabs
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#define frexp _fm_frexp
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#define hypot _fm_hypot
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#define ldexp _fm_ldexp
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#define log _fm_log
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#define log10 _fm_log10
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#define sin _fm_sin
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#define sinh _fm_sinh
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#define sqrt _fm_sqrt
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#define tan _fm_tan
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#define tanh _fm_tanh
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#define sincos _fm_sincos
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#define acosl _fm_acosl
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#define asinl _fm_asinl
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#define atan2l _fm_atan2l
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#define atanl _fm_atanl
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#define coshl _fm_coshl
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#define cosl _fm_cosl
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#define expl _fm_expl
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#define fabsl _fm_fabsl
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#define frexpl _fm_frexpl
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#define hypotl _fm_hypotl
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#define ldexpl _fm_ldexpl
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#define log10l _fm_log10l
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#define logl _fm_logl
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#define sinhl _fm_sinhl
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#define sinl _fm_sinl
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#define sqrtl _fm_sqrtl
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#define tanhl _fm_tanhl
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#define tanl _fm_tanl
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#define sincosl _fm_sincosl
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#define atanhl _fm_atanhl
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#define acoshl _fm_acoshl
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#define asinhl _fm_asinhl
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#endif /* _FM_NO_REMAP */
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#ifdef __cplusplus
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} // "C"
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#endif
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#endif /* __FASTMATH_H */
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