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annotate flys-artifacts/src/main/java/de/intevation/flys/utils/EpsilonComparator.java @ 3011:ab81ffd1343e

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FixA: Reactivated rewrite of the outlier checks. flys-artifacts/trunk@4576 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 04 Jun 2012 16:44:56 +0000
parents
children 0330bff1b382
rev   line source
3011
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.utils;
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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2
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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3 import java.io.Serializable;
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4
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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5 import java.util.Comparator;
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6
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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7 public class EpsilonComparator
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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8 implements Serializable, Comparator<Double>
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9 {
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10 public static final double EPSILON = 1e-5;
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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11
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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12 public static final EpsilonComparator INSTANCE =
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13 new EpsilonComparator(EPSILON);
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14
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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15 protected double epsilon;
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16
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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17 public EpsilonComparator() {
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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18 this(EPSILON);
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19 }
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20
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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21 public EpsilonComparator(double epsilon) {
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22 this.epsilon = Math.abs(epsilon);
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23 }
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24
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25 private static final double value(Double x) {
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26 return x != null ? x.doubleValue() : 0.0;
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27 }
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28
ab81ffd1343e FixA: Reactivated rewrite of the outlier checks.
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29 @Override
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30 public int compare(Double a, Double b) {
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31 double diff = value(a) - value(b);
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32 if (diff < epsilon) return -1;
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33 return diff > epsilon ? +1 : 0;
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34 }
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35 }
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36 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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