diff options
| -rw-r--r-- | src/support/bits.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/support/bits.cpp b/src/support/bits.cpp index 8dc0f31df..63b744eb4 100644 --- a/src/support/bits.cpp +++ b/src/support/bits.cpp @@ -97,7 +97,7 @@ template<> int CountTrailingZeroes<uint64_t>(uint64_t v) { } #if __has_builtin(__builtin_ctzll) || defined(__GNUC__) return __builtin_ctzll(v); -#elif defined(_MSC_VER) +#elif defined(_MSC_VER) && defined(_M_X64) unsigned long count; _BitScanForward64(&count, v); return (int)count; @@ -139,7 +139,7 @@ template<> int CountLeadingZeroes<uint64_t>(uint64_t v) { } #if __has_builtin(__builtin_clzll) || defined(__GNUC__) return __builtin_clzll(v); -#elif defined(_MSC_VER) +#elif defined(_MSC_VER) && defined(_M_X64) unsigned long count; _BitScanReverse64(&count, v); return (int)count; |