96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*-
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* Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
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* Copyright (c) 2002 David Schultz <das@FreeBSD.ORG>
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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 AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _FPMATH_
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#define _FPMATH_
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#include <endian.h>
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#include "_fpmath.h"
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#ifndef _IEEE_WORD_ORDER
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#define _IEEE_WORD_ORDER _BYTE_ORDER
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#endif
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union IEEEf2bits {
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float f;
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struct {
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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unsigned int man :23;
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unsigned int exp :8;
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unsigned int sign :1;
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#else /* _BIG_ENDIAN */
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unsigned int sign :1;
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unsigned int exp :8;
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unsigned int man :23;
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#endif
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} bits;
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};
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#define DBL_MANH_SIZE 20
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#define DBL_MANL_SIZE 32
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union IEEEd2bits {
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double d;
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struct {
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#if _IEEE_WORD_ORDER == _LITTLE_ENDIAN
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unsigned int manl :32;
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#endif
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unsigned int manh :20;
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unsigned int exp :11;
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unsigned int sign :1;
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#if _IEEE_WORD_ORDER == _BIG_ENDIAN
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unsigned int manl :32;
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#endif
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#else /* _BIG_ENDIAN */
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unsigned int sign :1;
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unsigned int exp :11;
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unsigned int manh :20;
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unsigned int manl :32;
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#endif
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} bits;
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};
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/*
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* The BSD "long double" functions are broken when sizeof(long double) == sizeof(double).
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* Android works around those cases by replacing the broken functions with our own trivial stubs
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* that call the regular "double" function.
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*/
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#ifndef __LP64__
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#define __fpclassifyl __broken__fpclassify
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#define __isfinitel __broken__isfinitel
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#define __isinfl __broken__isinfl
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#define __isnanl __broken__isnanl
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#define __isnormall __broken__isnormall
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#define __signbitl __broken_signbitl
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#endif // __LP64__
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#endif // _FPMATH_
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