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 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 35 union 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