blob: 756c0cbdc8380a2947e0c95f1bdbbfcc924b014d (
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
|
/*
* Copyright (c) 2020 Yubico AB. All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the LICENSE file.
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "openbsd-compat.h"
#if defined(_WIN32) && !defined(HAVE_ENDIAN_H)
/*
* Hopefully, if the endianness differs from the end result, the compiler
* optimizes these functions with some type of bswap instruction. Or,
* otherwise, to just return the input value unmodified. GCC and clang
* both does these optimization at least. This should be preferred over
* relying on some BYTE_ORDER macro, which may or may not be defined.
*/
uint32_t
htole32(uint32_t in)
{
uint32_t out = 0;
uint8_t *b = (uint8_t *)&out;
b[0] = (uint8_t)((in >> 0) & 0xff);
b[1] = (uint8_t)((in >> 8) & 0xff);
b[2] = (uint8_t)((in >> 16) & 0xff);
b[3] = (uint8_t)((in >> 24) & 0xff);
return (out);
}
uint64_t
htole64(uint64_t in)
{
uint64_t out = 0;
uint8_t *b = (uint8_t *)&out;
b[0] = (uint8_t)((in >> 0) & 0xff);
b[1] = (uint8_t)((in >> 8) & 0xff);
b[2] = (uint8_t)((in >> 16) & 0xff);
b[3] = (uint8_t)((in >> 24) & 0xff);
b[4] = (uint8_t)((in >> 32) & 0xff);
b[5] = (uint8_t)((in >> 40) & 0xff);
b[6] = (uint8_t)((in >> 48) & 0xff);
b[7] = (uint8_t)((in >> 56) & 0xff);
return (out);
}
#endif /* WIN32 && !HAVE_ENDIAN_H */
|
