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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*
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* $Id: math_fp_support.h,v 1.5 2006-01-08 12:04:23 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
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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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*
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* - 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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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MATH_FP_SUPPORT_H
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#define _MATH_FP_SUPPORT_H
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/****************************************************************************/
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/* If any of the three supported floating point support flavours is
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enabled, make sure that the generic 'FLOATING_POINT_SUPPORT' symbol
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is defined, too.*/
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#if (defined(IEEE_FLOATING_POINT_SUPPORT) || defined(M68881_FLOATING_POINT_SUPPORT) || defined(PPC_FLOATING_POINT_SUPPORT))
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#define FLOATING_POINT_SUPPORT
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#endif /* IEEE_FLOATING_POINT_SUPPORT || M68881_FLOATING_POINT_SUPPORT || PPC_FLOATING_POINT_SUPPORT */
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/****************************************************************************/
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/* This selects whether or not the 'long double' type should be used. So far,
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only 'double' can be supported, and 'long double' defaults to 'double'. */
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/*#define USE_LONG_DOUBLE*/
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/****************************************************************************/
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#if defined(USE_LONG_DOUBLE)
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typedef long double __long_double_t;
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#else
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typedef double __long_double_t;
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#endif /* USE_LONG_DOUBLE */
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/****************************************************************************/
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/* 'Portable' raw representations of three IEEE floating point formats. */
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union ieee_long_double
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{
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long double value;
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unsigned long raw[3];
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};
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union ieee_double
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{
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double value;
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unsigned long raw[2];
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};
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union ieee_single
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{
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float value;
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unsigned long raw[1];
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};
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/****************************************************************************/
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extern float __inff(void);
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extern double __inf(void);
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/****************************************************************************/
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#endif /* _MATH_FP_SUPPORT_H */
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