00001 /*- 00002 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 00014 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 00015 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00016 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00017 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 00018 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00019 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00020 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00021 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00022 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00023 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00024 * SUCH DAMAGE. 00025 * 00026 * $FreeBSD: src/lib/libc/i386/_fpmath.h,v 1.5 2005/03/07 04:55:22 das Exp $ 00027 */ 00028 00029 union IEEEl2bits { 00030 long double e; 00031 struct { 00032 unsigned int manl :32; 00033 unsigned int manh :32; 00034 unsigned int exp :15; 00035 unsigned int sign :1; 00036 unsigned int junk :16; 00037 } bits; 00038 }; 00039 00040 #define LDBL_NBIT 0x80000000 00041 #define mask_nbit_l(u) ((u).bits.manh &= ~LDBL_NBIT) 00042 00043 #define LDBL_MANH_SIZE 32 00044 #define LDBL_MANL_SIZE 32 00045 00046 #define LDBL_TO_ARRAY32(u, a) do { \ 00047 (a)[0] = (uint32_t)(u).bits.manl; \ 00048 (a)[1] = (uint32_t)(u).bits.manh; \ 00049 } while(0)