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: src/lib/libc/amd64/_fpmath.h,v 1.7 2008/01/17 16:39:06 bde Exp $ 27 */ 28 29 union IEEEl2bits { 30 long double e; 31 struct { 32 unsigned int manl :32; 33 unsigned int manh :32; 34 unsigned int exp :15; 35 unsigned int sign :1; 36 unsigned int junkl :16; 37 unsigned int junkh :32; 38 } bits; 39 struct { 40 unsigned long man :64; 41 unsigned int expsign :16; 42 unsigned long junk :48; 43 } xbits; 44 }; 45 46 #define LDBL_NBIT 0x80000000 47 #define mask_nbit_l(u) ((u).bits.manh &= ~LDBL_NBIT) 48 49 #define LDBL_MANH_SIZE 32 50 #define LDBL_MANL_SIZE 32 51 52 #define LDBL_TO_ARRAY32(u, a) do { \ 53 (a)[0] = (uint32_t)(u).bits.manl; \ 54 (a)[1] = (uint32_t)(u).bits.manh; \ 55 } while (0) 56