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 /**
21 * This class is used in the junit tests for the ODE integrators.
22 * <p>This is the same as problem 1 except integration is done
23 * backward in time</p>
24 */
25 public class TestProblem5 extends TestProblem1 {
26
27 /**
28 * Simple constructor.
29 */
30 public TestProblem5() {
31 setFinalConditions(2 * getInitialTime() - getFinalTime());
32 }
33 }