1 /*- 2 * Copyright (c) 2002, 2003 David Schultz <das (at) FreeBSD.ORG> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/libc/aarch64/_fpmath.h $ 27 */ 28 29 // ANDROID changed 30 // Android uses 128 bits long doubles for LP64, so the structure and the macros 31 // were reworked for the quad precision ieee representation. 32 33 union IEEEl2bits { 34 long double e; 35 struct { 36 #ifndef __AARCH64EB__ 37 unsigned long manl :64; 38 unsigned long manh :48; 39 unsigned int exp :15; 40 unsigned int sign :1; 41 #else 42 unsigned int sign :1; 43 unsigned int exp :15; 44 unsigned long manh :48; 45 unsigned long manl :64; 46 #endif 47 } bits; 48 struct { 49 #ifndef __AARCH64EB__ 50 unsigned long manl :64; 51 unsigned long manh :48; 52 unsigned int expsign :16; 53 #else 54 unsigned int expsign :16; 55 unsigned long manh :48; 56 unsigned long manl :64; 57 #endif 58 } xbits; 59 }; 60 61 #define LDBL_NBIT 0 62 #define LDBL_IMPLICIT_NBIT 63 #define mask_nbit_l(u) ((void)0) 64 65 #define LDBL_MANH_SIZE 48 66 #define LDBL_MANL_SIZE 64 67 68 #define LDBL_TO_ARRAY32(u, a) do { \ 69 (a)[0] = (uint32_t)(u).bits.manl; \ 70 (a)[1] = (uint32_t)((u).bits.manl >> 32); \ 71 (a)[2] = (uint32_t)(u).bits.manh; \ 72 (a)[3] = (uint32_t)((u).bits.manh >> 32); \ 73 } while(0) 74
