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(svn r11694) -Codechange: move more endianness related stuff to endian_func.hpp.

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rubidium
2007-12-25 13:28:09 +00:00
parent 429521a7d1
commit b3f6c0734b
11 changed files with 81 additions and 53 deletions
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30
src/core/bitmath_func.hpp
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@@ -291,4 +291,34 @@ template<typename T> static inline T ROR(const T x, const uint8 n)
for (i = 0; b != 0; i++, b >>= 1) \
if (b & 1)
#if defined(__APPLE__)
/* Make endian swapping use Apple's macros to increase speed
* (since it will use hardware swapping if available).
* Even though they should return uint16 and uint32, we get
* warnings if we don't cast those (why?) */
#define BSWAP32(x) ((uint32)Endian32_Swap(x))
#define BSWAP16(x) ((uint16)Endian16_Swap(x))
#else
/**
* Perform a 32 bits endianness bitswap on x.
* @param x the variable to bitswap
* @return the bitswapped value.
*/
static inline uint32 BSWAP32(uint32 x)
{
return ((x >> 24) & 0xFF) | ((x >> 8) & 0xFF00) | ((x << 8) & 0xFF0000) | ((x << 24) & 0xFF000000);
}
/**
* Perform a 16 bits endianness bitswap on x.
* @param x the variable to bitswap
* @return the bitswapped value.
*/
static inline uint16 BSWAP16(uint16 x)
{
return (x >> 8) | (x << 8);
}
#endif /* __APPLE__ */
#endif /* BITMATH_FUNC_HPP */