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Token2
2024-05-24 11:44:25 +02:00
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commit ca68f70495
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52
openbsd-compat/endian_win32.c Normal file
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/*
* 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 */