Examples of addSwitchingFunction()

Examples of org.apache.commons.math.ode.GillIntegrator.addSwitchingFunction()

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  public void testUnstableDerivative()
  throws DerivativeException, IntegratorException {
    final StepProblem stepProblem = new StepProblem(0.0, 1.0, 2.0);
    FirstOrderIntegrator integ = new GillIntegrator(0.3);
    integ.addSwitchingFunction(stepProblem, 1.0, 1.0e-12, 1000);
    double[] y = { Double.NaN };
    integ.integrate(stepProblem, 0.0, new double[] { 0.0 }, 10.0, y);
    assertEquals(8.0, y[0], 1.0e-12);
  }
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Examples of org.apache.commons.math.ode.GraggBulirschStoerIntegrator.addSwitchingFunction()

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                                                                  scalRelativeTolerance);
    TestProblemHandler handler = new TestProblemHandler(pb, integ);
    integ.setStepHandler(handler);
    SwitchingFunction[] functions = pb.getSwitchingFunctions();
    for (int l = 0; l < functions.length; ++l) {
      integ.addSwitchingFunction(functions[l],
                                 Double.POSITIVE_INFINITY, 1.0e-8 * maxStep, 1000);
    }
    integ.integrate(pb,
                    pb.getInitialTime(), pb.getInitialState(),
                    pb.getFinalTime(), new double[pb.getDimension()]);
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Examples of org.apache.commons.math.ode.GraggBulirschStoerIntegrator.addSwitchingFunction()

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  public void testUnstableDerivative()
    throws DerivativeException, IntegratorException {
    final StepProblem stepProblem = new StepProblem(0.0, 1.0, 2.0);
    FirstOrderIntegrator integ =
      new GraggBulirschStoerIntegrator(0.1, 10, 1.0e-12, 0.0);
    integ.addSwitchingFunction(stepProblem, 1.0, 1.0e-12, 1000);
    double[] y = { Double.NaN };
    integ.integrate(stepProblem, 0.0, new double[] { 0.0 }, 10.0, y);
    assertEquals(8.0, y[0], 1.0e-12);
  }
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Examples of org.apache.commons.math.ode.HighamHall54Integrator.addSwitchingFunction()

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                                                            scalRelativeTolerance);
    TestProblemHandler handler = new TestProblemHandler(pb, integ);
    integ.setStepHandler(handler);
    SwitchingFunction[] functions = pb.getSwitchingFunctions();
    for (int l = 0; l < functions.length; ++l) {
      integ.addSwitchingFunction(functions[l],
                                 Double.POSITIVE_INFINITY, 1.0e-8 * maxStep, 1000);
    }
    integ.integrate(pb,
                    pb.getInitialTime(), pb.getInitialState(),
                    pb.getFinalTime(), new double[pb.getDimension()]);
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Examples of org.apache.commons.math.ode.HighamHall54Integrator.addSwitchingFunction()

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          new HighamHall54Integrator(minStep, maxStep,
                                     scalAbsoluteTolerance, scalRelativeTolerance);
      TestProblemHandler handler = new TestProblemHandler(pb, integ);
      integ.setStepHandler(handler);

      integ.addSwitchingFunction(new SwitchingFunction() {
        public int eventOccurred(double t, double[] y) {
          return SwitchingFunction.CONTINUE;
        }
        public double g(double t, double[] y) throws FunctionEvaluationException {
          double middle = (pb.getInitialTime() + pb.getFinalTime()) / 2;
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Examples of org.apache.commons.math.ode.HighamHall54Integrator.addSwitchingFunction()

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        new HighamHall54Integrator(minStep, maxStep,
                                   scalAbsoluteTolerance, scalRelativeTolerance);
    TestProblemHandler handler = new TestProblemHandler(pb, integ);
    integ.setStepHandler(handler);

    integ.addSwitchingFunction(new SwitchingFunction() {
      public int eventOccurred(double t, double[] y) {
        return SwitchingFunction.CONTINUE;
      }
      public double g(double t, double[] y) {
        double middle = (pb.getInitialTime() + pb.getFinalTime()) / 2;
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Examples of org.apache.commons.math.ode.MidpointIntegrator.addSwitchingFunction()

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        FirstOrderIntegrator integ = new MidpointIntegrator(step);
        TestProblemHandler handler = new TestProblemHandler(pb, integ);
        integ.setStepHandler(handler);
        SwitchingFunction[] functions = pb.getSwitchingFunctions();
        for (int l = 0; l < functions.length; ++l) {
          integ.addSwitchingFunction(functions[l],
                                     Double.POSITIVE_INFINITY, 1.0e-6 * step, 1000);
        }
        integ.integrate(pb,
                        pb.getInitialTime(), pb.getInitialState(),
                        pb.getFinalTime(), new double[pb.getDimension()]);
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Examples of org.apache.commons.math.ode.ThreeEighthesIntegrator.addSwitchingFunction()

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        FirstOrderIntegrator integ = new ThreeEighthesIntegrator(step);
        TestProblemHandler handler = new TestProblemHandler(pb, integ);
        integ.setStepHandler(handler);
        SwitchingFunction[] functions = pb.getSwitchingFunctions();
        for (int l = 0; l < functions.length; ++l) {
          integ.addSwitchingFunction(functions[l],
                                     Double.POSITIVE_INFINITY, 1.0e-6 * step, 1000);
        }
        integ.integrate(pb, pb.getInitialTime(), pb.getInitialState(),
                        pb.getFinalTime(), new double[pb.getDimension()]);

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