CLZ                60 source/common/threading.h #define CLZ(id, x)            id = (unsigned long)__builtin_clz(x) ^ 31
CLZ                74 source/common/threading.h #define CLZ(id, x)            id = (unsigned long)__builtin_clz(x) ^ 31
CLZ                87 source/common/threading.h #define CLZ(id, x)            _BitScanReverse(&id, x)