1 /*- 2 * Copyright (c) 2003 Mike Barcroft <mike (at) FreeBSD.org> 3 * Copyright (c) 2002 David Schultz <das (at) FreeBSD.ORG> 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: src/lib/libc/include/fpmath.h,v 1.3 2005/02/06 03:23:31 das Exp $ 28 */ 29 30 #include <endian.h> 31 #include "_fpmath.h" 32 33 union IEEEf2bits { 34 float f; 35 struct { 36 #if __BYTE_ORDER == __LITTLE_ENDIAN 37 unsigned int man :23; 38 unsigned int exp :8; 39 unsigned int sign :1; 40 #else /* _BIG_ENDIAN */ 41 unsigned int sign :1; 42 unsigned int exp :8; 43 unsigned int man :23; 44 #endif 45 } bits; 46 }; 47 48 #define DBL_MANH_SIZE 20 49 #define DBL_MANL_SIZE 32 50 51 union IEEEd2bits { 52 double d; 53 struct { 54 /* #ifdef __ARMEB__ */ 55 #if (__BYTE_ORDER == __BIG_ENDIAN) || (defined(__arm__) && !defined(__VFP_FP__)) 56 unsigned int manh :20; 57 unsigned int exp :11; 58 unsigned int sign :1; 59 unsigned int manl :32; 60 #elif __BYTE_ORDER == __LITTLE_ENDIAN 61 unsigned int manl :32; 62 unsigned int manh :20; 63 unsigned int exp :11; 64 unsigned int sign :1; 65 #elif __BYTE_ORDER == __BIG_ENDIAN 66 unsigned int sign :1; 67 unsigned int exp :11; 68 unsigned int manh :20; 69 unsigned int manl :32; 70 #endif 71 } bits; 72 }; 73 74 /* 75 * The BSD "long double" functions are broken when sizeof(long double) == sizeof(double). 76 * Android works around those cases by replacing the broken functions with our own trivial stubs 77 * that call the regular "double" function. 78 */ 79 #define __fpclassifyl __broken__fpclassify 80 #define __isfinitel __broken__isfinitel 81 #define __isinfl __broken__isinfl 82 #define __isnanl __broken__isnanl 83 #define __isnormall __broken__isnormall 84 #define __signbitl __broken_signbitl 85
