Opened 10 years ago

Closed 10 years ago

Last modified 10 years ago

#2769 closed defect (fixed)

Partially evaluated function is not included in c-code

Reported by: anonymous Owned by: Martin Sjölund
Priority: critical Milestone: 1.9.1
Component: Backend Version: trunk
Keywords: Cc:

Description

The following code works perfectly, but when the line at the end starting with "real b = ..." is removed the function equilibriumPressureAdsorption() is not included in the c-code anymore and simulation crashes with the following error message. I am running the nightly build from Aug. 3rd 2014.

Error message:

MetalHydrideStorage.M_functions.o:MetalHydrideStorage.M_functions.c:(.text+0xfa7): undefined reference to `omc_MetalHydrideStorage_M_equilibriumPressureAdsorption'
collect2: ld returned 1 exit status
mingw32-make: *** [omc_main_target] Error 1
Compilation process exited with code 2

Code:

model M
  import SI = Modelica.SIunits;

  record State
    SI.Temperature T;
    SI.AbsolutePressure p;
    Real omega;
  end State;

  function equilibriumPressureAdsorption
    input State s;
    output SI.Pressure p_eq;
  protected
    Real p1, p2;
    constant Real alpha = 0.5;
    constant Real a1 = -4.884, a2 = -2374.7, a3 = 3.4129 * 10 ^ (-3), a4 = 48.816, a5 = -50.404, a6 = 22.711, a7 = -7.9717, a8 = 1.233;
    constant Real b1 = -452.34, b2 = 15.522, b3 = 4.0954, b4 = -1.3222 * 10 ^ (-2), b5 = 1.4406 * 10 ^ (-5);
    Real omega = s.omega * 100;
  algorithm
    p1 := exp(a1 + a2 / s.T + a3 * s.T + a4 * omega ^ alpha + a5 * omega + a6 * omega ^ 2 + a7 * omega ^ 3 + a8 * omega ^ 4);
    p2 := exp(b1 + b2 * omega + b3 * s.T + b4 * s.T ^ 2 + b5 * s.T ^ 3);
    p_eq := p1 + p2;
  end equilibriumPressureAdsorption;

  function equilibriumLoadingAdsorption "Uses modelica's root finding algorithm to calculate the equilibrium loading based on the equilibrium pressure function"
    input State s;
    output Real omega_eq;
  algorithm
    omega_eq := Modelica.Math.Nonlinear.solveOneNonlinearEquation(function equilibriumLoadingAdsorptionDummy(s = s), 0, 0.02, 1e-006);
  end equilibriumLoadingAdsorption;

  function equilibriumLoadingAdsorptionDummy
    extends Modelica.Math.Nonlinear.Interfaces.partialScalarFunction;
    input State s;
  algorithm
    y := equilibriumPressureAdsorption(State(T = s.T, p = s.p, omega = u)) - s.p;
  end equilibriumLoadingAdsorptionDummy;

  Real r = equilibriumLoadingAdsorption(State(time * 100 + 273.15, 50, 0.01));
  Real b = equilibriumPressureAdsorption(State(time * 100 + 273.15, 50, 0.01));
  annotation(uses(Modelica(version = "3.2.1")));
end M;

Change History (3)

comment:1 by Martin Sjölund, 10 years ago

Owner: changed from somebody to Martin Sjölund
Status: newaccepted

comment:2 by Martin Sjölund, 10 years ago

Resolution: fixed
Status: acceptedclosed

Should be fixed in r21741.

comment:3 by Martin Sjölund, 10 years ago

Component: UnknownBackend
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