| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> |
| 3 | * Copyright (c) 2002 David Schultz <das@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; |
| Elliott Hughes | a0ee078 | 2013-01-30 19:06:37 -0800 | [diff] [blame] | 60 | #elif __BYTE_ORDER == __LITTLE_ENDIAN |
| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 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 | }; |
| Elliott Hughes | a0ee078 | 2013-01-30 19:06:37 -0800 | [diff] [blame] | 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 |