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Update libdivide to the latest master

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This commit is contained in:
Alexey Milovidov 2020-07-05 02:58:10 +03:00
parent c696354dd4
commit c5cf7199d8
1 changed files with 11 additions and 4 deletions
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15
contrib/libdivide/libdivide.h
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@ -290,10 +290,17 @@ static inline int32_t libdivide_count_leading_zeros32(uint32_t val) {
} }
return 0; return 0;
#else #else
int32_t result = 0; if (val == 0)
uint32_t hi = 1U << 31; return 32;
for (; ~val & hi; hi >>= 1) { int32_t result = 8;
result++; uint32_t hi = 0xFFU << 24;
while ((val & hi) == 0) {
hi >>= 8;
result += 8;
}
while (val & hi) {
result -= 1;
hi <<= 1;
} }
return result; return result;
#endif #endif