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@@ -375,14 +375,33 @@ private:
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* (since it will use hardware swapping if available).
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* Even though they should return uint16 and uint32, we get
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* warnings if we don't cast those (why?) */
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# define BSWAP64(x) (static_cast<uint64>(CFSwapInt64(x)))
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# define BSWAP32(x) (static_cast<uint32>(CFSwapInt32(x)))
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# define BSWAP16(x) (static_cast<uint16>(CFSwapInt16(x)))
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#elif defined(_MSC_VER)
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/* MSVC has intrinsics for swapping, resulting in faster code */
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# define BSWAP64(x) (_byteswap_uint64(x))
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# define BSWAP32(x) (_byteswap_ulong(x))
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# define BSWAP16(x) (_byteswap_ushort(x))
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#else
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/**
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* Perform a 64 bits endianness bitswap on x.
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* @param x the variable to bitswap
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* @return the bitswapped value.
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*/
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static inline uint64 BSWAP64(uint64 x)
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{
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#if !defined(__ICC) && (defined(__GNUC__) || defined(__clang__))
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/* GCC >= 4.3 provides a builtin, resulting in faster code */
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return (uint64)__builtin_bswap64((uint64)x);
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#else
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return ((x >> 56) & 0xFFULL) | ((x >> 40) & 0xFF00ULL) | ((x >> 24) & 0xFF0000ULL) | ((x >> 8) & 0xFF000000ULL) |
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((x << 8) & 0xFF00000000ULL) | ((x << 24) & 0xFF0000000000ULL) | ((x << 40) & 0xFF000000000000ULL) | ((x << 56) & 0xFF00000000000000ULL);
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;
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#endif /* __GNUC__ || __clang__ */
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}
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/**
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* Perform a 32 bits endianness bitswap on x.
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* @param x the variable to bitswap
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* @return the bitswapped value.
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