// ---  bool op_buy_sig()  {          if((e_Relative_Strength_Index() - e_Relative_Strength_Index1()) > Ratio)                  return true;          // ---          return false;  }  // ---  bool op_sell_sig()  {          if((e_Relative_Strength_Index() - e_Relative_Strength_Index1()) < -Ratio)                  return true;          // ---          return false;  }