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Apr-09-14 22:46:05
Simulation of example results in OMC-Error
Category:
Programming
Forum:
Modelica Language
I'm just starting to learn Modelica and working through the DrModelica tutorial.
In 'Packages as Abstract Data Types' (PackasADTs.onb),
simulating the following code I'm getting an error I can't figure out.
Has anyone run into this?
Note: I'm using OpenModelica 1.9.1 Beta2 (r19512) (RML version)
Code:
encapsulated package ComplexNumbersA
function Add = Complex.Add;
function Multiply = Complex.Multiply;
function MakeComplex = Complex.MakeComplex;
class Complex
protected
Real re;
Real im;
public
function Add
input Complex x;
input Complex y;
output Complex z;
algorithm
z.re:=x.re+y.re;
z.im:=x.im+y.im;
end Add;
function Multiply
input Complex x;
input Complex y;
output Complex z;
algorithm
z.re:=x.re*y.re-x.im*y.im;
z.im:=x.re*y.im+x.im*y.re;
end Multiply;
function MakeComplex
input Real x;
input Real y;
output Complex z;
algorithm
z.re:=x;
z.im:=y;
end MakeComplex;
end Complex;
end ComplexNumbersA;
{ComplexNumbersA}
Code:
class ComplexUser3
ComplexNumbersA.Complex a = ComplexNumbersA.MakeComplex(1.0, 2.0);
ComplexNumbersA.Complex b = ComplexNumbersA.MakeComplex(1.0, 2.0);
ComplexNumbersA.Complex z, w;
equation
z = ComplexNumbersA.Multiply(a, b);
w = ComplexNumbersA.Add(a, b);
end ComplexUser3;
{ComplexUser3}
Code:
simulate(ComplexUser3)
record SimulationResult
resultFile = "",
messages = "Failed to build model: ComplexUser3"
end SimulationResult;
OMC-ERROR:
"[<interactive>:13:7-13:14:writable] Error: Variable a.re is not referenced in any equation (possibly after symbolic manipulations).
"
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