1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.math4.legacy.ode;
19
20 import org.apache.commons.math4.legacy.core.Field;
21 import org.apache.commons.math4.legacy.core.RealFieldElement;
22
23 /**
24 * This class is used in the junit tests for the ODE integrators.
25 * <p>This is the same as problem 1 except integration is done
26 * backward in time</p>
27 * @param <T> the type of the field elements
28 */
29 public class TestFieldProblem5<T extends RealFieldElement<T>>
30 extends TestFieldProblem1<T> {
31
32 /**
33 * Simple constructor.
34 * @param field field to which elements belong
35 */
36 public TestFieldProblem5(Field<T> field) {
37 super(field);
38 setFinalConditions(getInitialState().getTime().multiply(2).subtract(getFinalTime()));
39 }
40 }