VfIsRuleClassEnabled

UINT8 __stdcall VfIsRuleClassEnabled(UINT64 a1){
  int v2; 

  if( (unsigned int)a1 >= 0x40 )
    return 0;
  v2 = *((_DWORD *)&stru_140CF2E80 + ((unsigned __int64)(unsigned int)a1 >> 5) + 1826);
  return _bittest(&v2, a1 & 0x1F);
}

Referenced by:

IovpCancelRoutine
ViDifCheckCallbackInterception
ViThunkReplaceSharedExports
ViXdvDriverLoadImage