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src/sfendian.h: Detect and use MSVC byte swap intrinsics

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evpobr 2017-10-21 11:22:03 +05:00 committed by Erik de Castro Lopo
parent e02f64cd98
commit d356f3f292
1 changed files with 7 additions and 1 deletions
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8
src/sfendian.h
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@ -68,7 +68,13 @@ ENDSWAP_64X (int64_t x)
#endif
#endif
#if (HAVE_BYTESWAP_H == 0) && (COMPILER_IS_GCC == 0)
#ifdef _MSC_VER
#include <stdlib.h>
#define ENDSWAP_16(x) (_byteswap_ushort (x))
#define ENDSWAP_32(x) (_byteswap_ulong (x))
#define ENDSWAP_64(x) (_byteswap_uint64 (x))
#elif (HAVE_BYTESWAP_H == 0) && (COMPILER_IS_GCC == 0)
#define ENDSWAP_16(x) ((((x) >> 8) & 0xFF) + (((x) & 0xFF) << 8))
#define ENDSWAP_32(x) ((((x) >> 24) & 0xFF) + (((x) >> 8) & 0xFF00) + (((x) & 0xFF00) << 8) + (((x) & 0xFF) << 24))