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Fix a bug in ctzll

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This commit is contained in:
Junekey Jeon
2020-09-18 11:25:14 -07:00
committed by Victor Zverovich
parent 6f81ea151a
commit 2ecdbb986d
1 changed files with 3 additions and 2 deletions
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5
include/fmt/format.h
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@ -281,10 +281,11 @@ inline int ctzll(uint64_t x) {
_BitScanForward64(&r, x); _BitScanForward64(&r, x);
# else # else
// Scan the low 32 bits. // Scan the low 32 bits.
if (_BitScanForward(&r, static_cast<uint32_t>(x))) return r; if (_BitScanForward(&r, static_cast<uint32_t>(x)))
return static_cast<int>(r);
// Scan the high 32 bits. // Scan the high 32 bits.
_BitScanReverse(&r, static_cast<uint32_t>(x >> 32)); _BitScanForward(&r, static_cast<uint32_t>(x >> 32));
r += 32; r += 32;
# endif # endif