1/*-
2 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#if defined(__VFP_FP__) || defined(__ARM_EABI__)
30#define	_IEEE_WORD_ORDER	_BYTE_ORDER
31#else
32#define	_IEEE_WORD_ORDER	_BIG_ENDIAN
33#endif
34
35union IEEEl2bits {
36	long double	e;
37	struct {
38#if _BYTE_ORDER == _LITTLE_ENDIAN
39#if _IEEE_WORD_ORDER == _LITTLE_ENDIAN
40		unsigned int	manl	:32;
41#endif
42		unsigned int	manh	:20;
43		unsigned int	exp	:11;
44		unsigned int	sign	:1;
45#if _IEEE_WORD_ORDER == _BIG_ENDIAN
46		unsigned int	manl	:32;
47#endif
48#else	/* _BYTE_ORDER == _LITTLE_ENDIAN */
49		unsigned int		sign	:1;
50		unsigned int		exp	:11;
51		unsigned int		manh	:20;
52		unsigned int		manl	:32;
53#endif
54	} bits;
55};
56
57#define	LDBL_NBIT	0
58#define	LDBL_IMPLICIT_NBIT
59#define	mask_nbit_l(u)	((void)0)
60
61#define	LDBL_MANH_SIZE	20
62#define	LDBL_MANL_SIZE	32
63
64#define	LDBL_TO_ARRAY32(u, a) do {			\
65	(a)[0] = (uint32_t)(u).bits.manl;		\
66	(a)[1] = (uint32_t)(u).bits.manh;		\
67} while(0)
68