1/*
2 * Copyright (c) 2003, 2008 Apple Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23/*-
24 * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU>
25 * All rights reserved.
26 *
27 * Redistribution and use in source and binary forms, with or without
28 * modification, are permitted provided that the following conditions
29 * are met:
30 * 1. Redistributions of source code must retain the above copyright
31 *    notice, this list of conditions and the following disclaimer.
32 * 2. Redistributions in binary form must reproduce the above copyright
33 *    notice, this list of conditions and the following disclaimer in the
34 *    documentation and/or other materials provided with the distribution.
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
37 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
39 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
42 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
44 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
45 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 *
48 * $FreeBSD: src/lib/libc/i386/_fpmath.h,v 1.3 2004/01/18 07:57:01 das Exp $
49 */
50
51#if defined(__i386__) || defined(__x86_64__)
52
53union IEEEl2bits {
54	long double	e;
55	struct {
56		unsigned int	manl	:32;
57		unsigned int	manh	:32;
58		unsigned int	exp	:15;
59		unsigned int	sign	:1;
60		unsigned int	junk	:16;
61	} bits;
62};
63
64#define	mask_nbit_l(u)	((u).bits.manh &= 0x7fffffff)
65
66#define	LDBL_MANH_SIZE	32
67#define	LDBL_MANL_SIZE	32
68
69#define	LDBL_TO_ARRAY32(u, a) do {			\
70	(a)[0] = (uint32_t)(u).bits.manl;		\
71	(a)[1] = (uint32_t)(u).bits.manh;		\
72} while(0)
73#elif defined(__arm__)
74
75union IEEEl2bits {
76    long double     e;
77    struct {
78#ifndef __ARMEB__
79	unsigned int    manl    :32;
80	unsigned int    manh    :20;
81	unsigned int    exp     :11;
82	unsigned int    sign    :1;
83#else
84	unsigned int            sign    :1;
85	unsigned int            exp     :11;
86	unsigned int            manh    :20;
87	unsigned int            manl    :32;
88#endif
89    } bits;
90};
91
92#define LDBL_NBIT       0
93#define mask_nbit_l(u)  ((void)0)
94
95#define LDBL_MANH_SIZE  20
96#define LDBL_MANL_SIZE  32
97
98#define LDBL_TO_ARRAY32(u, a) do {                      \
99        (a)[0] = (uint32_t)(u).bits.manl;               \
100        (a)[1] = (uint32_t)(u).bits.manh;               \
101} while(0)
102
103#else
104#error unsupported architecture
105#endif
106