Addition of to tarnsfwer functions zp1 + zp2, i.e. parallel connection of two transfer functions (= inputs are the same, outputs of the two systems are added)
encapsulated operator function '+' import Modelica; import ZerosAndPoles = Modelica_LinearSystems2.WorkInProgress.DiscreteZerosAndPoles; import Modelica_LinearSystems2.Math.Polynomial; import Complex; input ZerosAndPoles zp1; input ZerosAndPoles zp2; end '+';