--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/math/ConstantFunction.java	Fri Sep 28 12:14:00 2012 +0200
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2010 by Intevation GmbH
+ *
+ * This program is free software under the LGPL (>=v2.1)
+ * Read the file LGPL.txt coming with the software for details
+ * or visit http://www.gnu.org/licenses/ if it does not exist.
+ */
+
+package de.intevation.gnv.math;
+
+import org.apache.commons.math.analysis.UnivariateRealFunction;
+
+/**
+ * Models a constant function to be used in function evaluation.
+ *
+ * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
+ */
+public class ConstantFunction
+implements   UnivariateRealFunction
+{
+    /**
+     * The constant value.
+     */
+    protected double value;
+
+    /**
+     * Defaut constructor.
+     */
+    public ConstantFunction() {
+    }
+
+    /**
+     * Constructor to create a ConstantFunction with
+     * a given constant value.
+     * @param value The constant value.
+     */
+    public ConstantFunction(double value) {
+        this.value = value;
+    }
+
+    public double value(double x) {
+        return value;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :