_fpmath.h revision 124653
131921Sbrian/*- 231921Sbrian * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> 331921Sbrian * All rights reserved. 431921Sbrian * 531921Sbrian * Redistribution and use in source and binary forms, with or without 631921Sbrian * modification, are permitted provided that the following conditions 731921Sbrian * are met: 831921Sbrian * 1. Redistributions of source code must retain the above copyright 931921Sbrian * notice, this list of conditions and the following disclaimer. 1031921Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1131921Sbrian * notice, this list of conditions and the following disclaimer in the 1231921Sbrian * documentation and/or other materials provided with the distribution. 1331921Sbrian * 1431921Sbrian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1531921Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1631921Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1731921Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1831921Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1931921Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2031921Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2131921Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2231921Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2331921Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2431921Sbrian * SUCH DAMAGE. 2531921Sbrian * 2650479Speter * $FreeBSD: head/lib/libc/amd64/_fpmath.h 124653 2004-01-18 07:57:02Z das $ 2731690Sbrian */ 2831690Sbrian 2937210Sbrianunion IEEEl2bits { 3037210Sbrian long double e; 3137210Sbrian struct { 3237210Sbrian unsigned int manl :32; 3337210Sbrian unsigned int manh :32; 3437210Sbrian unsigned int exp :15; 3537210Sbrian unsigned int sign :1; 3637210Sbrian unsigned int junkl :16; 3737210Sbrian unsigned int junkh :32; 3831690Sbrian } bits; 3937210Sbrian}; 4037210Sbrian 4131690Sbrian#define mask_nbit_l(u) ((u).bits.manh &= 0x7fffffff) 4231690Sbrian 4331690Sbrian#define LDBL_MANH_SIZE 32 4431690Sbrian#define LDBL_MANL_SIZE 32 4531690Sbrian 4637210Sbrian#define LDBL_TO_ARRAY32(u, a) do { \ 4731690Sbrian (a)[0] = (uint32_t)(u).bits.manl; \ 4831690Sbrian (a)[1] = (uint32_t)(u).bits.manh; \ 4931690Sbrian} while(0) 5031690Sbrian