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Java example source code file (LutherFieldIntegratorTest.java)

This example Java source code file (LutherFieldIntegratorTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

dimensionmismatchexception, luther, lutherfieldintegratortest, maxcountexceededexception, nobracketingexception, numberistoosmallexception, override, realfieldelement, rungekuttafieldintegratorabstracttest

The LutherFieldIntegratorTest.java Java example source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.math3.ode.nonstiff;


import org.apache.commons.math3.Field;
import org.apache.commons.math3.RealFieldElement;
import org.apache.commons.math3.exception.DimensionMismatchException;
import org.apache.commons.math3.exception.MaxCountExceededException;
import org.apache.commons.math3.exception.NoBracketingException;
import org.apache.commons.math3.exception.NumberIsTooSmallException;
import org.apache.commons.math3.util.Decimal64Field;

public class LutherFieldIntegratorTest extends RungeKuttaFieldIntegratorAbstractTest {

    protected <T extends RealFieldElement RungeKuttaFieldIntegrator
    createIntegrator(Field<T> field, T step) {
        return new LutherFieldIntegrator<T>(field, step);
    }

    @Override
    public void testNonFieldIntegratorConsistency() {
        doTestNonFieldIntegratorConsistency(Decimal64Field.getInstance());
    }

    @Override
    public void testMissedEndEvent()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestMissedEndEvent(Decimal64Field.getInstance(), 1.0e-15, 1.0e-15);
    }

    @Override
    public void testSanityChecks()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestSanityChecks(Decimal64Field.getInstance());
    }

    @Override
    public void testDecreasingSteps()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestDecreasingSteps(Decimal64Field.getInstance(), 1.0, 1.0, 1.0e-10);
    }

    @Override
    public void testSmallStep()
         throws DimensionMismatchException, NumberIsTooSmallException,
                MaxCountExceededException, NoBracketingException {
        doTestSmallStep(Decimal64Field.getInstance(), 8.7e-17, 3.6e-15, 1.0e-12, "Luther");
    }

    @Override
    public void testBigStep()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestBigStep(Decimal64Field.getInstance(), 2.7e-5, 1.7e-3, 1.0e-12, "Luther");
    }

    @Override
    public void testBackward()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestBackward(Decimal64Field.getInstance(), 2.4e-13, 4.3e-13, 1.0e-12, "Luther");
    }

    @Override
    public void testKepler()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestKepler(Decimal64Field.getInstance(), 2.18e-7, 4.0e-10);
    }

    @Override
    public void testStepSize()
        throws DimensionMismatchException, NumberIsTooSmallException,
               MaxCountExceededException, NoBracketingException {
        doTestStepSize(Decimal64Field.getInstance(), 1.0e-22);
    }

    @Override
    public void testSingleStep() {
        doTestSingleStep(Decimal64Field.getInstance(), 6.0e-12);
    }

    @Override
    public void testTooLargeFirstStep() {
        doTestTooLargeFirstStep(Decimal64Field.getInstance());
    }

    @Override
    public void testUnstableDerivative() {
        doTestUnstableDerivative(Decimal64Field.getInstance(), 4.0e-15);
    }

    @Override
    public void testDerivativesConsistency() {
        doTestDerivativesConsistency(Decimal64Field.getInstance(), 1.0e-20);
    }

    @Override
    public void testPartialDerivatives() {
        doTestPartialDerivatives(4.3e-13, new double[] { 2.2e-12, 5.6e-13, 9.4e-14, 9.4e-14, 5.6e-13 });
    }

}

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