ExpTypeToPriority

NTSTATUS __stdcall ExpTypeToPriority(UINT64 a1){
  if( (unsigned int)a1 >= 7 )
    return a1 - 32;
  else
    return *((_DWORD *)ExpBuiltinPriorities + (int)a1);
}

Referenced by:

ExQueueWorkItem
ExQueueWorkItemEx
ExQueueWorkItemExFromIo
ExQueueWorkItemFromIo
ExQueueWorkItemToPartition
ExpTryQueueWorkItem