Package org.apache.commons.math.ode.sampling

Examples of org.apache.commons.math.ode.sampling.AbstractStepInterpolator.storeTime()

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      stepStart = acceptStep(interpolator, y, yDotTmp, t);

      if (!isLastStep) {

          // prepare next step
          interpolator.storeTime(stepStart);

          // stepsize control for next step
          final double  nextT      = stepStart + stepSize;
          final boolean nextIsLast = forward ? (nextT >= t) : (nextT <= t);
          if (nextIsLast) {
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      rki.reinitialize(this, yTmp, yDotK, forward);
      interpolator = rki;
    } else {
      interpolator = new DummyStepInterpolator(yTmp, yDotK[stages - 1], forward);
    }
    interpolator.storeTime(t0);

    // set up integration control objects
    stepStart         = t0;
    double  hNew      = 0;
    boolean firstTime = true;
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        }

      }

      // local error is small enough: accept the step, trigger events and step handlers
      interpolator.storeTime(stepStart + stepSize);
      System.arraycopy(yTmp, 0, y, 0, y0.length);
      System.arraycopy(yDotK[stages - 1], 0, yDotTmp, 0, y0.length);
      stepStart = acceptStep(interpolator, y, yDotTmp, t);

      if (!isLastStep) {
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      stepStart = acceptStep(interpolator, y, yDotTmp, t);

      if (!isLastStep) {

          // prepare next step
          interpolator.storeTime(stepStart);

          if (fsal) {
              // save the last evaluation for the next step
              System.arraycopy(yDotTmp, 0, yDotK[0], 0, y0.length);
          }
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        final double tolerance = 0.1;
        EventState es = new EventState(closeEventsGenerator, 1.5 * gap, tolerance, 10);

        AbstractStepInterpolator interpolator =
            new DummyStepInterpolator(new double[0], new double[0], true);
        interpolator.storeTime(r1 - 2.5 * gap);
        interpolator.shift();
        interpolator.storeTime(r1 - 1.5 * gap);
        es.reinitializeBegin(interpolator);

        interpolator.shift();
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        AbstractStepInterpolator interpolator =
            new DummyStepInterpolator(new double[0], new double[0], true);
        interpolator.storeTime(r1 - 2.5 * gap);
        interpolator.shift();
        interpolator.storeTime(r1 - 1.5 * gap);
        es.reinitializeBegin(interpolator);

        interpolator.shift();
        interpolator.storeTime(r1 - 0.5 * gap);
        Assert.assertFalse(es.evaluateStep(interpolator));
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        interpolator.shift();
        interpolator.storeTime(r1 - 1.5 * gap);
        es.reinitializeBegin(interpolator);

        interpolator.shift();
        interpolator.storeTime(r1 - 0.5 * gap);
        Assert.assertFalse(es.evaluateStep(interpolator));

        interpolator.shift();
        interpolator.storeTime(0.5 * (r1 + r2));
        Assert.assertTrue(es.evaluateStep(interpolator));
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        interpolator.shift();
        interpolator.storeTime(r1 - 0.5 * gap);
        Assert.assertFalse(es.evaluateStep(interpolator));

        interpolator.shift();
        interpolator.storeTime(0.5 * (r1 + r2));
        Assert.assertTrue(es.evaluateStep(interpolator));
        Assert.assertEquals(r1, es.getEventTime(), tolerance);
        es.stepAccepted(es.getEventTime(), new double[0]);

        interpolator.shift();
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        Assert.assertTrue(es.evaluateStep(interpolator));
        Assert.assertEquals(r1, es.getEventTime(), tolerance);
        es.stepAccepted(es.getEventTime(), new double[0]);

        interpolator.shift();
        interpolator.storeTime(r2 + 0.4 * gap);
        Assert.assertTrue(es.evaluateStep(interpolator));
        Assert.assertEquals(r2, es.getEventTime(), tolerance);

    }

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  public void testImpossibleSerialization()
  throws IOException {

    double[] y = { 0.0, 1.0, -2.0 };
    AbstractStepInterpolator interpolator = new BadStepInterpolator(y, true);
    interpolator.storeTime(0);
    interpolator.shift();
    interpolator.storeTime(1);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutputStream    oos = new ObjectOutputStream(bos);
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