projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | /*- |
| 2 | * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> | |
| 3 | * Copyright (c) 2002 David Schultz <dschultz@uclink.Berkeley.EDU> | |
| 4 | * All rights reserved. | |
| e9ce8d39 A |
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. | |
| e9ce8d39 | 14 | * |
| 9385eb3d | 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| e9ce8d39 A |
16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 9385eb3d | 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| e9ce8d39 A |
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. | |
| 9385eb3d | 26 | * |
| 59e0d9fe | 27 | * $FreeBSD: src/lib/libc/include/fpmath.h,v 1.2 2004/01/18 08:05:21 das Exp $ |
| e9ce8d39 A |
28 | */ |
| 29 | ||
| 9385eb3d A |
30 | #include <sys/endian.h> |
| 31 | #include "_fpmath.h" | |
| e9ce8d39 | 32 | |
| 9385eb3d A |
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; | |
| e9ce8d39 | 44 | #endif |
| 9385eb3d A |
45 | } bits; |
| 46 | }; | |
| e9ce8d39 | 47 | |
| 59e0d9fe A |
48 | #define DBL_MANH_SIZE 20 |
| 49 | #define DBL_MANL_SIZE 32 | |
| 50 | ||
| 9385eb3d A |
51 | union IEEEd2bits { |
| 52 | double d; | |
| 53 | struct { | |
| 54 | #if _BYTE_ORDER == _LITTLE_ENDIAN | |
| 55 | unsigned int manl :32; | |
| 56 | unsigned int manh :20; | |
| 57 | unsigned int exp :11; | |
| 58 | unsigned int sign :1; | |
| 59 | #else /* _BIG_ENDIAN */ | |
| 60 | unsigned int sign :1; | |
| 61 | unsigned int exp :11; | |
| 62 | unsigned int manh :20; | |
| 63 | unsigned int manl :32; | |
| 64 | #endif | |
| 65 | } bits; | |
| 66 | }; |