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 package org.apache.commons.nabla.forward.arithmetic;
18
19 import org.apache.commons.nabla.AbstractMathTest;
20 import org.junit.Test;
21
22 public class DSubGeneratorTest extends AbstractMathTest {
23
24 @Test
25 public void testReference1(){
26 checkReference(new ReferenceFunction() {
27 public double value(double t) { return t - 5; }
28 public double firstDerivative(double t) { return 1; }
29 }, -0.99, 0.99, 30, 0.0);
30 }
31
32 @Test
33 public void testReference2(){
34 checkReference(new ReferenceFunction() {
35 public double value(double t) { return 5 - t; }
36 public double firstDerivative(double t) { return -1; }
37 }, -0.99, 0.99, 30, 0.0);
38 }
39
40 @Test
41 public void testReference12(){
42 checkReference(new ReferenceFunction() {
43 public double value(double t) { return t - t; }
44 public double firstDerivative(double t) { return 0; }
45 }, -0.99, 0.99, 30, 0.0);
46 }
47
48 }