blob: 02433d30da466845e73da467e4635746b91baf1a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* byteswap.h - Byte swapping
Copyright (C) 2005, 2007, 2009-2026 Free Software Foundation, Inc.
Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_BYTESWAP_H
#define _GL_BYTESWAP_H 1
/* This file uses _GL_INLINE. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
/* Define this now, rather than after including stdbit.h, in case stdbit.h
recursively includes us via stdint.h. This is for Gnulib endian.h. */
#ifndef _GL_BYTESWAP_INLINE
# define _GL_BYTESWAP_INLINE _GL_INLINE
#endif
#include <stdbit.h> /* for stdc_memreverse8u* */
#include <stdint.h> /* for UINT_LEAST64_MAX */
_GL_INLINE_HEADER_BEGIN
#ifdef __cplusplus
extern "C" {
#endif
/* Given an unsigned 16-bit argument X, return the value corresponding to
X with reversed byte order. */
_GL_BYTESWAP_INLINE uint_least16_t
bswap_16 (uint_least16_t x)
{
return stdc_memreverse8u16 (x);
}
/* Given an unsigned 32-bit argument X, return the value corresponding to
X with reversed byte order. */
_GL_BYTESWAP_INLINE uint_least32_t
bswap_32 (uint_least32_t x)
{
return stdc_memreverse8u32 (x);
}
#ifdef UINT_LEAST64_MAX
/* Given an unsigned 64-bit argument X, return the value corresponding to
X with reversed byte order. */
_GL_BYTESWAP_INLINE uint_least64_t
bswap_64 (uint_least64_t x)
{
return stdc_memreverse8u64 (x);
}
#endif
#ifdef __cplusplus
}
#endif
_GL_INLINE_HEADER_END
#endif /* _GL_BYTESWAP_H */
|
