_fpmath.h revision 110566
1178476Sjb/*- 2178476Sjb * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> 3178476Sjb * All rights reserved. 4178476Sjb * 5178476Sjb * Redistribution and use in source and binary forms, with or without 6178476Sjb * modification, are permitted provided that the following conditions 7178476Sjb * are met: 8178476Sjb * 1. Redistributions of source code must retain the above copyright 9178476Sjb * notice, this list of conditions and the following disclaimer. 10178476Sjb * 2. Redistributions in binary form must reproduce the above copyright 11178476Sjb * notice, this list of conditions and the following disclaimer in the 12178476Sjb * documentation and/or other materials provided with the distribution. 13178476Sjb * 14178476Sjb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15178476Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16178476Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17178476Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18178476Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19178476Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20178476Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21178476Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22178476Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23178476Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24178476Sjb * SUCH DAMAGE. 25178476Sjb * 26178476Sjb * $FreeBSD: head/lib/libc/amd64/_fpmath.h 110566 2003-02-08 20:37:55Z mike $ 27178476Sjb */ 28178476Sjb 29178476Sjbunion IEEEl2bits { 30178476Sjb long double e; 31178476Sjb struct { 32178476Sjb unsigned int manl :32; 33178476Sjb unsigned int manh :32; 34178476Sjb unsigned int exp :15; 35178476Sjb unsigned int sign :1; 36178476Sjb unsigned int junk :16; 37178476Sjb } bits; 38178476Sjb}; 39178476Sjb 40178476Sjb#define mask_nbit_l(u) ((u).bits.manh &= 0x7fffffff) 41178476Sjb