1/*- 2 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> 3 * Copyright (c) 2002 David Schultz <das@FreeBSD.ORG> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: stable/11/lib/libc/include/fpmath.h 330485 2018-03-05 09:17:18Z eadler $ 28 */ 29 30#ifndef _FPMATH_H_ 31#define _FPMATH_H_ 32 33#include <sys/endian.h> 34#include "_fpmath.h" 35 36#ifndef _IEEE_WORD_ORDER 37#define _IEEE_WORD_ORDER _BYTE_ORDER 38#endif 39 40union IEEEf2bits { 41 float f; 42 struct { 43#if _BYTE_ORDER == _LITTLE_ENDIAN 44 unsigned int man :23; 45 unsigned int exp :8; 46 unsigned int sign :1; 47#else /* _BIG_ENDIAN */ 48 unsigned int sign :1; 49 unsigned int exp :8; 50 unsigned int man :23; 51#endif 52 } bits; 53}; 54 55#define DBL_MANH_SIZE 20 56#define DBL_MANL_SIZE 32 57 58union IEEEd2bits { 59 double d; 60 struct { 61#if _BYTE_ORDER == _LITTLE_ENDIAN 62#if _IEEE_WORD_ORDER == _LITTLE_ENDIAN 63 unsigned int manl :32; 64#endif 65 unsigned int manh :20; 66 unsigned int exp :11; 67 unsigned int sign :1; 68#if _IEEE_WORD_ORDER == _BIG_ENDIAN 69 unsigned int manl :32; 70#endif 71#else /* _BIG_ENDIAN */ 72 unsigned int sign :1; 73 unsigned int exp :11; 74 unsigned int manh :20; 75 unsigned int manl :32; 76#endif 77 } bits; 78}; 79 80#endif /* !_FPMATH_H */ 81