1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> 5 * Copyright (c) 2002 David Schultz <das@FreeBSD.ORG> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _FPMATH_H_ 33 #define _FPMATH_H_ 34 35 #include <sys/endian.h> 36 #include "_fpmath.h" 37 38 #ifndef _IEEE_WORD_ORDER 39 #define _IEEE_WORD_ORDER _BYTE_ORDER 40 #endif 41 42 union IEEEf2bits { 43 float f; 44 struct { 45 #if _BYTE_ORDER == _LITTLE_ENDIAN 46 unsigned int man :23; 47 unsigned int exp :8; 48 unsigned int sign :1; 49 #else /* _BIG_ENDIAN */ 50 unsigned int sign :1; 51 unsigned int exp :8; 52 unsigned int man :23; 53 #endif 54 } bits; 55 }; 56 57 #define DBL_MANH_SIZE 20 58 #define DBL_MANL_SIZE 32 59 60 union IEEEd2bits { 61 double d; 62 struct { 63 #if _BYTE_ORDER == _LITTLE_ENDIAN 64 #if _IEEE_WORD_ORDER == _LITTLE_ENDIAN 65 unsigned int manl :32; 66 #endif 67 unsigned int manh :20; 68 unsigned int exp :11; 69 unsigned int sign :1; 70 #if _IEEE_WORD_ORDER == _BIG_ENDIAN 71 unsigned int manl :32; 72 #endif 73 #else /* _BIG_ENDIAN */ 74 unsigned int sign :1; 75 unsigned int exp :11; 76 unsigned int manh :20; 77 unsigned int manl :32; 78 #endif 79 } bits; 80 }; 81 82 #endif /* !_FPMATH_H */ 83