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///////////////////////////////////////////////////////////////////////////////
//
/// \file bswap.h
/// \brief Byte swapping
//
// This code has been put into the public domain.
//
// This library 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef LZMA_BSWAP_H
#define LZMA_BSWAP_H
// NOTE: We assume that config.h is already #included.
// byteswap.h is a GNU extension. It contains inline assembly versions
// for byteswapping. When byteswap.h is not available, we use generic code.
#ifdef HAVE_BYTESWAP_H
# include <byteswap.h>
#else
# define bswap_16(num) \
(((num) << 8) | ((num) >> 8))
# define bswap_32(num) \
( (((num) << 24) ) \
| (((num) << 8) & UINT32_C(0x00FF0000)) \
| (((num) >> 8) & UINT32_C(0x0000FF00)) \
| (((num) >> 24) ) )
# define bswap_64(num) \
( (((num) << 56) ) \
| (((num) << 40) & UINT64_C(0x00FF000000000000)) \
| (((num) << 24) & UINT64_C(0x0000FF0000000000)) \
| (((num) << 8) & UINT64_C(0x000000FF00000000)) \
| (((num) >> 8) & UINT64_C(0x00000000FF000000)) \
| (((num) >> 24) & UINT64_C(0x0000000000FF0000)) \
| (((num) >> 40) & UINT64_C(0x000000000000FF00)) \
| (((num) >> 56) ) )
#endif
#endif
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