function characterizeEigenvalue
import Modelica.ComplexMath;
import Modelica.ComplexMath.j;
import Complex;
import Modelica_LinearSystems2;
import Modelica_LinearSystems2.StateSpace;
import Modelica_LinearSystems2.Internal.Eigenvalue;
import Modelica_LinearSystems2.Internal;
input StateSpace ss = Modelica_LinearSystems2.StateSpace(A = fill(0, 0, 0), B = fill(0, 0, 0), C = fill(0, 0, 0), D = fill(0, 0, 0)) "State space system";
input Eigenvalue evin[:] "Eigenvalues or a pairs of conjugated complex pair";
output Eigenvalue ev[size(ss.A, 1)];
end characterizeEigenvalue;