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 DNegGeneratorTest extends AbstractMathTest { 23 24 @Test 25 public void testReference(){ 26 checkReference(new ReferenceFunction() { 27 public double value(double t) { return -t; } 28 public double firstDerivative(double t) { return -1; } 29 }, -0.99, 0.99, 30, 1.0e-20); 30 } 31 32 }