_fpmath.h revision 141379
1129202Scognet/*- 2141379Sdas * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> 3129202Scognet * All rights reserved. 4129202Scognet * 5129202Scognet * Redistribution and use in source and binary forms, with or without 6129202Scognet * modification, are permitted provided that the following conditions 7129202Scognet * are met: 8129202Scognet * 1. Redistributions of source code must retain the above copyright 9129202Scognet * notice, this list of conditions and the following disclaimer. 10129202Scognet * 2. Redistributions in binary form must reproduce the above copyright 11129202Scognet * notice, this list of conditions and the following disclaimer in the 12129202Scognet * documentation and/or other materials provided with the distribution. 13129202Scognet * 14129202Scognet * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15129202Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16129202Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17129202Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18129202Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19129202Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20129202Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21129202Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22129202Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23129202Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24129202Scognet * SUCH DAMAGE. 25129202Scognet * 26129202Scognet * $FreeBSD: head/lib/libc/arm/_fpmath.h 141379 2005-02-06 03:23:31Z das $ 27129202Scognet */ 28129202Scognet 29129202Scognetunion IEEEl2bits { 30129202Scognet long double e; 31129202Scognet struct { 32129202Scognet unsigned int manl :32; 33129202Scognet unsigned int manh :32; 34129202Scognet unsigned int exp :15; 35129202Scognet unsigned int sign :1; 36129202Scognet unsigned int junk :16; 37129202Scognet } bits; 38129202Scognet}; 39129202Scognet 40129202Scognet#define mask_nbit_l(u) ((u).bits.manh &= 0x7fffffff) 41129202Scognet 42129202Scognet#define LDBL_MANH_SIZE 32 43129202Scognet#define LDBL_MANL_SIZE 32 44129202Scognet 45129202Scognet#define LDBL_TO_ARRAY32(u, a) do { \ 46129202Scognet (a)[0] = (uint32_t)(u).bits.manl; \ 47129202Scognet (a)[1] = (uint32_t)(u).bits.manh; \ 48129202Scognet} while(0) 49