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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file check_byteswap.h
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/// \brief Byteswapping needed by the checks
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//
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// This code has been put into the public domain.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef LZMA_CHECK_BYTESWAP_H
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#define LZMA_CHECK_BYTESWAP_H
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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// byteswap.h is a GNU extension. It contains inline assembly versions
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// for byteswapping. When byteswap.h is not available, we use generic code.
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#ifdef HAVE_BYTESWAP_H
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# include <byteswap.h>
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#else
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# define bswap_32(num) \
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( (((num) << 24) ) \
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| (((num) << 8) & UINT32_C(0x00FF0000)) \
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| (((num) >> 8) & UINT32_C(0x0000FF00)) \
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| (((num) >> 24) ) )
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# define bswap_64(num) \
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( (((num) << 56) ) \
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| (((num) << 40) & UINT64_C(0x00FF000000000000)) \
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| (((num) << 24) & UINT64_C(0x0000FF0000000000)) \
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| (((num) << 8) & UINT64_C(0x000000FF00000000)) \
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| (((num) >> 8) & UINT64_C(0x00000000FF000000)) \
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| (((num) >> 24) & UINT64_C(0x0000000000FF0000)) \
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| (((num) >> 40) & UINT64_C(0x000000000000FF00)) \
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| (((num) >> 56) ) )
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#endif
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#endif
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