| 7a3e3720 |
1 | /* See endianconv.c top comments for more information |
| 2 | * |
| 3 | * ---------------------------------------------------------------------------- |
| 4 | * |
| 5 | * Copyright (c) 2011-2012, Salvatore Sanfilippo <antirez at gmail dot com> |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
| 11 | * * Redistributions of source code must retain the above copyright notice, |
| 12 | * this list of conditions and the following disclaimer. |
| 13 | * * Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * * Neither the name of Redis nor the names of its contributors may be used |
| 17 | * to endorse or promote products derived from this software without |
| 18 | * specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #ifndef __ENDIANCONV_H |
| 34 | #define __ENDIANCONV_H |
| 35 | |
| 3b0600c7 |
36 | #include <stdint.h> |
| 37 | |
| 7a3e3720 |
38 | void memrev16(void *p); |
| 39 | void memrev32(void *p); |
| 40 | void memrev64(void *p); |
| 41 | uint16_t intrev16(uint16_t v); |
| 42 | uint32_t intrev32(uint32_t v); |
| 43 | uint64_t intrev64(uint64_t v); |
| 44 | |
| 45 | /* variants of the function doing the actual convertion only if the target |
| 46 | * host is big endian */ |
| 47 | #if (BYTE_ORDER == LITTLE_ENDIAN) |
| 48 | #define memrev16ifbe(p) |
| 49 | #define memrev32ifbe(p) |
| 50 | #define memrev64ifbe(p) |
| 51 | #define intrev16ifbe(v) (v) |
| 52 | #define intrev32ifbe(v) (v) |
| 53 | #define intrev64ifbe(v) (v) |
| 54 | #else |
| 55 | #define memrev16ifbe(p) memrev16(p) |
| 56 | #define memrev32ifbe(p) memrev32(p) |
| 57 | #define memrev64ifbe(p) memrev64(p) |
| 58 | #define intrev16ifbe(v) intrev16(v) |
| 59 | #define intrev32ifbe(v) intrev32(v) |
| 60 | #define intrev64ifbe(v) intrev64(v) |
| 61 | #endif |
| 62 | |
| 63 | #endif |
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