_fpmath.h revision 175459
1110566Smike/*- 2110566Smike * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> 3141379Sdas * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> 4110566Smike * All rights reserved. 5110566Smike * 6110566Smike * Redistribution and use in source and binary forms, with or without 7110566Smike * modification, are permitted provided that the following conditions 8110566Smike * are met: 9110566Smike * 1. Redistributions of source code must retain the above copyright 10110566Smike * notice, this list of conditions and the following disclaimer. 11110566Smike * 2. Redistributions in binary form must reproduce the above copyright 12110566Smike * notice, this list of conditions and the following disclaimer in the 13110566Smike * documentation and/or other materials provided with the distribution. 14110566Smike * 15110566Smike * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16110566Smike * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17110566Smike * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18110566Smike * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19110566Smike * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20110566Smike * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21110566Smike * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22110566Smike * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23110566Smike * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24110566Smike * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25110566Smike * SUCH DAMAGE. 26110566Smike * 27110566Smike * $FreeBSD: head/lib/libc/sparc64/_fpmath.h 175459 2008-01-18 21:25:51Z das $ 28110566Smike */ 29110566Smike 30110566Smikeunion IEEEl2bits { 31110566Smike long double e; 32110566Smike struct { 33110566Smike unsigned int sign :1; 34110566Smike unsigned int exp :15; 35110566Smike unsigned long manh :48; 36110566Smike unsigned long manl :64; 37110566Smike } bits; 38175459Sdas struct { 39175459Sdas unsigned int expsign :16; 40175459Sdas unsigned long manh :48; 41175459Sdas unsigned long manl :64; 42175459Sdas } xbits; 43110566Smike}; 44110566Smike 45110566Smike#define mask_nbit_l(u) ((void)0) 46113145Sdas#define LDBL_IMPLICIT_NBIT 47143214Sdas#define LDBL_NBIT 0 48113145Sdas 49124653Sdas#define LDBL_MANH_SIZE 48 50124653Sdas#define LDBL_MANL_SIZE 64 51124653Sdas 52113145Sdas#define LDBL_TO_ARRAY32(u, a) do { \ 53113145Sdas (a)[0] = (uint32_t)(u).bits.manl; \ 54113145Sdas (a)[1] = (uint32_t)((u).bits.manl >> 32); \ 55113145Sdas (a)[2] = (uint32_t)(u).bits.manh; \ 56113145Sdas (a)[3] = (uint32_t)((u).bits.manh >> 32); \ 57113145Sdas} while(0) 58