Mercurial > hg > openttd
changeset 18077:8277c23f5e3c draft
(svn r22898) -Codechange: use MSVC compiler intrinsics for byte swapping
| author | glx <glx@openttd.org> |
|---|---|
| date | Tue, 06 Sep 2011 00:10:20 +0000 |
| parents | 7a1882ed2d36 |
| children | 3f5752deb867 |
| files | src/core/bitmath_func.hpp |
| diffstat | 1 files changed, 4 insertions(+), 0 deletions(-) [+] |
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--- a/src/core/bitmath_func.hpp +++ b/src/core/bitmath_func.hpp @@ -355,6 +355,10 @@ * warnings if we don't cast those (why?) */ #define BSWAP32(x) ((uint32)Endian32_Swap(x)) #define BSWAP16(x) ((uint16)Endian16_Swap(x)) +#elif defined(_MSC_VER) + /* MSVC has intrinsics for swapping, resulting in faster code */ + #define BSWAP32(x) (_byteswap_ulong(x)) + #define BSWAP16(x) (_byteswap_ushort(x)) #else /** * Perform a 32 bits endianness bitswap on x.