

Commons Math example source code file (Expm1Function.java)
The Commons Math Expm1Function.java 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/LICENSE2.0 * * 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.math.analysis; import org.apache.commons.math.FunctionEvaluationException; /** * Auxillary class for testing purposes. * * @version $Revision: 786927 $ $Date: 20090620 19:37:47 0400 (Sat, 20 Jun 2009) $ */ public class Expm1Function implements DifferentiableUnivariateRealFunction { public double value(double x) throws FunctionEvaluationException { // Math.expm1() is available in jdk 1.5 but not in jdk 1.4.2. return Math.exp(x)  1.0; } public UnivariateRealFunction derivative() { return new UnivariateRealFunction() { public double value(double x) throws FunctionEvaluationException { return Math.exp(x); } }; } } Other Commons Math examples (source code examples)Here is a short list of links related to this Commons Math Expm1Function.java source code file: 
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