001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.math.analysis; 018 019 import org.apache.commons.math.FunctionEvaluationException; 020 021 /** 022 * Wrapper class for counting functions calls. 023 * 024 * @version $Revision: 786927 $ $Date: 2009-06-20 19:37:47 -0400 (Sat, 20 Jun 2009) $ 025 */ 026 public class MonitoredFunction implements UnivariateRealFunction { 027 028 public MonitoredFunction(UnivariateRealFunction f) { 029 callsCount = 0; 030 this.f = f; 031 } 032 033 public void setCallsCount(int callsCount) { 034 this.callsCount = callsCount; 035 } 036 037 public int getCallsCount() { 038 return callsCount; 039 } 040 041 public double value(double x) throws FunctionEvaluationException { 042 ++callsCount; 043 return f.value(x); 044 } 045 046 private int callsCount; 047 private UnivariateRealFunction f; 048 049 }