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 * Wrapper class for counting functions calls. 23 * 24 * @version $Revision: 786927 $ $Date: 2009-06-20 19:37:47 -0400 (Sat, 20 Jun 2009) $ 25 */ 26 public class MonitoredFunction implements UnivariateRealFunction { 27 28 public MonitoredFunction(UnivariateRealFunction f) { 29 callsCount = 0; 30 this.f = f; 31 } 32 33 public void setCallsCount(int callsCount) { 34 this.callsCount = callsCount; 35 } 36 37 public int getCallsCount() { 38 return callsCount; 39 } 40 41 public double value(double x) throws FunctionEvaluationException { 42 ++callsCount; 43 return f.value(x); 44 } 45 46 private int callsCount; 47 private UnivariateRealFunction f; 48 49 }