in phnt/include/ntrtl.h [5096:5108]
FORCEINLINE LUID RtlConvertLongToLuid(
_In_ LONG Long
)
{
LUID tempLuid;
LARGE_INTEGER tempLi;
tempLi.QuadPart = Long;
tempLuid.LowPart = tempLi.LowPart;
tempLuid.HighPart = tempLi.HighPart;
return tempLuid;
}