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
42union 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
60union 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