Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/ConstantFunction.java @ 1060:cc4ec127d666

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Remove the elements of an outdated state from cache if its endOfLife method is called. gnv-artifacts/trunk@1143 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 01 Jun 2010 16:54:21 +0000
parents a645bd23c1c8
children f953c9a559d8
rev   line source
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1 package de.intevation.gnv.math;
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2
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3 import org.apache.commons.math.analysis.UnivariateRealFunction;
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4
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5 /**
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6 * Models a constant function to be used in function evaluation.
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7 *
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8 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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9 */
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10 public class ConstantFunction
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11 implements UnivariateRealFunction
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12 {
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13 /**
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14 * The constant value.
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15 */
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16 protected double value;
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17
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18 /**
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19 * Defaut constructor.
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20 */
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21 public ConstantFunction() {
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22 }
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23
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24 /**
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25 * Constructor to create a ConstantFunction with
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26 * a given constant value.
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27 * @param value The constant value.
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28 */
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29 public ConstantFunction(double value) {
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30 this.value = value;
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31 }
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32
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33 public double value(double x) {
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34 return value;
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35 }
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36 }
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37 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org