1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 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 40 union 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 58 union 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