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Endian.h
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1 /*
2 * Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 */
22
23 #ifndef __NETWORK_ENDIAN_H_
24 #define __NETWORK_ENDIAN_H_
25
26
27 #include <endian.h>
28
29
30 /*
31 * endianess defines (big or little)
32 */
33 // #define __LITTLE_ENDIAN
34 // #define __BIG_ENDIAN
35
36
37 /*
38 * define byte-swap macros
39 */
40 inline uint64_t bswap64( uint64_t value ) { return __builtin_bswap64(value); }
41 inline uint32_t bswap32( uint32_t value ) { return __builtin_bswap32(value); }
42 inline uint16_t bswap16( uint16_t value ) { return ((value >> 8) | (value << 8)); }
43
44
45 /*
46 * define network swapping macros, based on endianness
47 */
48 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
49
50 inline uint64_t netswap64( uint64_t value ) { return bswap64(value); }
51 inline uint32_t netswap32( uint32_t value ) { return bswap32(value); }
52 inline uint16_t netswap16( uint16_t value ) { return bswap16(value); }
53
54 #elif (__BYTE_ORDER == __BIG_ENDIAN)
55
56 inline uint64_t netswap64( uint64_t value ) { return value; }
57 inline uint32_t netswap32( uint32_t value ) { return value; }
58 inline uint16_t netswap16( uint16_t value ) { return value; }
59
60 #endif
61 #endif
uint16_t netswap16(uint16_t value)
Definition: Endian.h:52
uint32_t bswap32(uint32_t value)
Definition: Endian.h:41
uint32_t netswap32(uint32_t value)
Definition: Endian.h:51
uint16_t bswap16(uint16_t value)
Definition: Endian.h:42
uint64_t netswap64(uint64_t value)
Definition: Endian.h:50
uint64_t bswap64(uint64_t value)
Definition: Endian.h:40