1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #if defined(__VFP_FP__) || defined(__ARM_EABI__) 32 #define _IEEE_WORD_ORDER _BYTE_ORDER 33 #else 34 #define _IEEE_WORD_ORDER _BIG_ENDIAN 35 #endif 36 37 union IEEEl2bits { 38 long double e; 39 struct { 40 #if _BYTE_ORDER == _LITTLE_ENDIAN 41 #if _IEEE_WORD_ORDER == _LITTLE_ENDIAN 42 unsigned int manl :32; 43 #endif 44 unsigned int manh :20; 45 unsigned int exp :11; 46 unsigned int sign :1; 47 #if _IEEE_WORD_ORDER == _BIG_ENDIAN 48 unsigned int manl :32; 49 #endif 50 #else /* _BYTE_ORDER == _LITTLE_ENDIAN */ 51 unsigned int sign :1; 52 unsigned int exp :11; 53 unsigned int manh :20; 54 unsigned int manl :32; 55 #endif 56 } bits; 57 }; 58 59 #define LDBL_NBIT 0 60 #define LDBL_IMPLICIT_NBIT 61 #define mask_nbit_l(u) ((void)0) 62 63 #define LDBL_MANH_SIZE 20 64 #define LDBL_MANL_SIZE 32 65 66 #define LDBL_TO_ARRAY32(u, a) do { \ 67 (a)[0] = (uint32_t)(u).bits.manl; \ 68 (a)[1] = (uint32_t)(u).bits.manh; \ 69 } while(0) 70