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