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