001 /*--------------------------------------------------------------------------+ 002 $Id: MinAggregator.java 28099 2010-06-09 13:17:22Z hummelb $ 003 | | 004 | Copyright 2005-2010 Technische Universitaet Muenchen | 005 | | 006 | Licensed under the Apache License, Version 2.0 (the "License"); | 007 | you may not use this file except in compliance with the License. | 008 | You may obtain a copy of the License at | 009 | | 010 | http://www.apache.org/licenses/LICENSE-2.0 | 011 | | 012 | Unless required by applicable law or agreed to in writing, software | 013 | distributed under the License is distributed on an "AS IS" BASIS, | 014 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 015 | See the License for the specific language governing permissions and | 016 | limitations under the License. | 017 +--------------------------------------------------------------------------*/ 018 package edu.tum.cs.commons.math; 019 020 /** 021 * Minimum aggregator. 022 * 023 * @author deissenb 024 * @author $Author: hummelb $ 025 * @version $Rev: 28099 $ 026 * @levd.rating GREEN Hash: C47D5B70A68ABDC1C3CAE2320770D3E1 027 */ 028 public class MinAggregator extends PairwiseAggregatorBase { 029 030 /** Returns {@link Double#POSITIVE_INFINITY}. */ 031 @Override 032 public double getNeutralElement() { 033 return Double.POSITIVE_INFINITY; 034 } 035 036 /** {@inheritDoc} */ 037 @Override 038 protected double aggregate(double aggregate, double value) { 039 return Math.min(aggregate, value); 040 } 041 }