KeIsSubsetAffinityEx

UINT64 __stdcall KeIsSubsetAffinityEx(_KAFFINITY_EX *Affinity1, _KAFFINITY_EX *Affinity2){
  INT64 result[22]; 
  memset((INT64)result, 0i64);
  KeAndAffinityEx(Affinity1, Affinity2, (_KAFFINITY_EX *)result);
  return KeIsEqualAffinityEx(&Affinity1->Count, (unsigned __int16 *)result);
}

Referenced by:

PpmIdleCheckCoordinatedStateEligibility
PpmIdleExecuteTransition
PpmPerfApplyDomainState
PpmPerfApplyDomainStates
PpmUpdateIdleDomains
PsUpdateActiveProcessAffinity
PspSetProcessAffinitySafe