From 2c20738067e6cd4f49ce063967c93776b583066a Mon Sep 17 00:00:00 2001 From: glx Date: Tue, 6 Sep 2011 00:10:20 +0000 Subject: (svn r22898) -Codechange: use MSVC compiler intrinsics for byte swapping --- src/core/bitmath_func.hpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/core') diff --git a/src/core/bitmath_func.hpp b/src/core/bitmath_func.hpp index a881ee81d..d10003007 100644 --- a/src/core/bitmath_func.hpp +++ b/src/core/bitmath_func.hpp @@ -355,6 +355,10 @@ static FORCEINLINE T ROR(const T x, const uint8 n) * 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. -- cgit v1.2.3-54-g00ecf