Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/utils/EpsilonComparator.java @ 7036:e25ef8376c14
issue971: Change CSV column separator to ";".
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Wed, 18 Sep 2013 12:25:05 +0200 |
parents | 164e2f2c9bea |
children |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.utils; import java.util.Comparator; import java.io.Serializable; /** Comparator with some tolerance (epsilon). */ public class EpsilonComparator implements Comparator<Double>, Serializable { public static final double EPSILON = 1e-4; /** Ready-made comparator with 1e-4 tolerance. */ public static final EpsilonComparator CMP = new EpsilonComparator(EPSILON); private double epsilon; public EpsilonComparator(double epsilon) { this.epsilon = epsilon; } @Override public int compare(Double a, Double b) { double diff = a - b; if (diff < -epsilon) return -1; if (diff > epsilon) return +1; return 0; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :