diff options
| -rw-r--r-- | src/config.h.in | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/src/config.h.in b/src/config.h.in index f7187c32..99628748 100644 --- a/src/config.h.in +++ b/src/config.h.in @@ -208,24 +208,11 @@ inline int Ctz(unsigned __int64 mask) { #endif } -#if _M_ARM64 -//https://stackoverflow.com/a/70012905 -template <typename T> -int BrianKernighanPopcount(T value) { - int count; - for(count = 0; value; count++) - { - value &= value - 1; - } - return count; -} -#endif - inline int Popcount(unsigned long value) { #if _M_X64 || _M_IX86 return __popcnt(value); #elif _M_ARM64 - return BrianKernighanPopcount(value); + return _CountOneBits(value); #else #error unexpected architecture #endif @@ -245,7 +232,7 @@ inline int Popcount(unsigned __int64 value) { #elif _M_IX86 return Popcount(HighDword(value)) + Popcount(LowDword(value)); #elif _M_ARM64 - return BrianKernighanPopcount(value); + return _CountOneBits64(value); #else #error unexpected architecture #endif |