1 /*- 2 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> 3 * Copyright (c) 2014 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 union IEEEl2bits { 31 long double e; 32 struct { 33 unsigned long manl :64; 34 unsigned long manh :48; 35 unsigned int exp :15; 36 unsigned int sign :1; 37 } bits; 38 struct { 39 unsigned long manl :64; 40 unsigned long manh :48; 41 unsigned int expsign :16; 42 } xbits; 43 }; 44 45 #define LDBL_NBIT 0 46 #define LDBL_IMPLICIT_NBIT 47 #define mask_nbit_l(u) ((void)0) 48 49 #define LDBL_MANH_SIZE 20 50 #define LDBL_MANL_SIZE 32 51 52 #define LDBL_TO_ARRAY32(u, a) do { \ 53 (a)[0] = (uint32_t)(u).bits.manl; \ 54 (a)[1] = (uint32_t)(u).bits.manh; \ 55 } while(0) 56 57 /* 58 * TODO: Due to compiler problem we are temporary using 59 * LDBL_PREC == 53. Use code below for LDBL_PREC == 113 60 */ 61 #if 0 62 #define LDBL_MANH_SIZE 48 63 #define LDBL_MANL_SIZE 64 64 65 #define LDBL_TO_ARRAY32(u, a) do { \ 66 (a)[0] = (uint32_t)(u).bits.manl; \ 67 (a)[1] = (uint32_t)((u).bits.manl >> 32); \ 68 (a)[2] = (uint32_t)(u).bits.manh; \ 69 (a)[3] = (uint32_t)((u).bits.manh >> 32); \ 70 } while(0) 71 #endif 72