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.math.analysis; 18 19 import org.apache.commons.math.FunctionEvaluationException; 20 21 /** 22 * An interface representing a univariate real function. 23 * 24 * @version $Revision: 799857 $ $Date: 2009-08-01 09:07:12 -0400 (Sat, 01 Aug 2009) $ 25 */ 26 public interface UnivariateRealFunction { 27 /** 28 * Compute the value for the function. 29 * @param x the point for which the function value should be computed 30 * @return the value 31 * @throws FunctionEvaluationException if the function evaluation fails 32 */ 33 public double value(double x) throws FunctionEvaluationException; 34 35 }