RtlFcpCompareFeatureToFeature

__int64 __fastcall RtlFcpCompareFeatureToFeature(_DWORD *a1, _DWORD *a2){
  unsigned int v2; 
  unsigned int v3; 

  if( *a1 <= *a2 )
  {
    if( *a1 < *a2 )
      return 0xFFFFFFFFi64;
    v2 = a1[1] & 0xF;
    v3 = a2[1] & 0xF;
    if( v2 >= v3 )
    {
      if( v2 <= v3 )
        return 0i64;
      return 0xFFFFFFFFi64;
    }
  }
  return 1i64;
}

Referenced by:

RtlpFcValidateFeatureConfigurationBuffer