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mhd_bithelpers: replaced macro with static function

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Bit-rotating macro was replaced with static inline function to avoid two time evaluation
and calculation of the parameters.
This commit is contained in:
Evgeny Grin (Karlson2k)
2021-05-16 17:53:45 +03:00
parent 8a9a64a703
commit 1265e687ff
1 changed files with 9 additions and 4 deletions
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src/microhttpd/mhd_bithelpers.h
+9 -4
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@@ -26,13 +26,14 @@
#ifndef MHD_BITHELPERS_H
#define MHD_BITHELPERS_H 1
#include "mhd_byteorder.h"
#include <stdint.h>
#if defined(_MSC_FULL_VER) && (! defined(__clang__) || (defined(__c2__) && \
defined(__OPTIMIZE__)))
/* Declarations for VC & Clang/C2 built-ins */
#include <intrin.h>
#endif /* _MSC_FULL_VER */
#include "mhd_assert.h"
#include "mhd_byteorder.h"
#ifndef __has_builtin
/* Avoid precompiler errors with non-clang */
@@ -230,9 +231,13 @@
#define _MHD_ROTR32(value32, bits) \
((uint32_t) _rotr ((uint32_t) (value32),(bits)))
#else /* ! _MSC_FULL_VER */
/* Defined in form which modern compiler could optimize. */
#define _MHD_ROTR32(value32, bits) \
(((uint32_t) (value32)) >> (bits) | ((uint32_t) (value32)) << (32 - bits))
_MHD_static_inline uint32_t
_MHD_ROTR32 (uint32_t value32, int bits)
{
mhd_assert (bits < 32);
/* Defined in form which modern compiler could optimize. */
return (value32 >> bits) | (value32 << (32 - bits));
}
#endif /* ! _MSC_FULL_VER */