Source for org.jfree.data.function.Function2D

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  *
   7:  * Project Info:  http://www.jfree.org/jfreechart/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  *
  27:  * ---------------
  28:  * Function2D.java
  29:  * ---------------
  30:  * (C) Copyright 2002-2005 by Object Refinery Limited.
  31:  *
  32:  * Original Author:  David Gilbert (for Object Refinery Limited);
  33:  * Contributor(s):   -;
  34:  *
  35:  * $Id: Function2D.java,v 1.3.2.1 2005/10/25 21:31:32 mungady Exp $
  36:  *
  37:  * Changes:
  38:  * --------
  39:  * 01-Oct-2002 : Version 1 (DG);
  40:  * 20-Jan-2005 : Minor Javadoc update (DG);
  41:  * 
  42:  */
  43: 
  44: package org.jfree.data.function;
  45: 
  46: /**
  47:  * A function of the form <code>y = f(x)</code>.
  48:  */
  49: public interface Function2D {
  50: 
  51:     /**
  52:      * Returns the value of the function ('y') for a given input ('x').
  53:      *
  54:      * @param x  the x-value.
  55:      *
  56:      * @return The function value.
  57:      */
  58:     public double getValue(double x);
  59: 
  60: }