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Use compiler built-ins for bits rotations if available

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This commit is contained in:
Evgeny Grin (Karlson2k)
2021-06-21 15:21:03 +03:00
parent 441dbcfe52
commit 64e91ef600
1 changed files with 10 additions and 4 deletions
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src/microhttpd/mhd_bithelpers.h
+10 -4
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@@ -286,7 +286,10 @@ _MHD_PUT_64BIT_BE_SAFE (void *dst, uint64_t value)
#endif /* ! __clang__ */
#define _MHD_ROTR32(value32, bits) \
((uint32_t) _rotr ((uint32_t) (value32),(bits)))
#else /* ! _MSC_FULL_VER */
#elif __has_builtin (__builtin_rotateright32)
#define _MHD_ROTR32(value32, bits) \
((uint32_t) __builtin_rotateright32 ((value32), (bits)))
#else /* ! __builtin_rotateright32 */
_MHD_static_inline uint32_t
_MHD_ROTR32 (uint32_t value32, int bits)
{
@@ -296,7 +299,7 @@ _MHD_ROTR32 (uint32_t value32, int bits)
}
#endif /* ! _MSC_FULL_VER */
#endif /* ! __builtin_rotateright32 */
/**
@@ -311,7 +314,10 @@ _MHD_ROTR32 (uint32_t value32, int bits)
#endif /* ! __clang__ */
#define _MHD_ROTL32(value32, bits) \
((uint32_t) _rotl ((uint32_t) (value32),(bits)))
#else /* ! _MSC_FULL_VER */
#elif __has_builtin (__builtin_rotateleft32)
#define _MHD_ROTL32(value32, bits) \
((uint32_t) __builtin_rotateleft32 ((value32), (bits)))
#else /* ! __builtin_rotateleft32 */
_MHD_static_inline uint32_t
_MHD_ROTL32 (uint32_t value32, int bits)
{
@@ -321,7 +327,7 @@ _MHD_ROTL32 (uint32_t value32, int bits)
}
#endif /* ! _MSC_FULL_VER */
#endif /* ! __builtin_rotateleft32 */
#endif /* ! MHD_BITHELPERS_H */