package ac.essex.ooechs.ecj.ecj2java.example.data;

import ec.gp.GPData;

/**
 *
 * Allows a double data type to be passed up and down the tree.
 *
 * <p/>
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version,
 * provided that any use properly credits the author.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details at http://www.gnu.org
 * </p>
 *
 * @author Olly Oechsle, University of Essex, Date: 06-Dec-2006
 * @version 1.0
 */
public class DoubleData extends GPData {

    public double x;    // store a double value

    // copy my stuff to another DoubleData
    public GPData copyTo(final GPData gpd) {
        ((DoubleData) gpd).x = x;
        return gpd;
    }

    /**
     * Allows the DoubleData to handle boolean data
     * by assuming a value of either 0 or 1.
     */
    public boolean getBoolean() {
        return x == 1;
    }

    /**
     * Sets the double data as a boolean value:<br />
     * If the boolean is true, the value is set to 1<br />
     * If the boolean is false, the value is set to 0<br />
     */
    public void setBoolean(boolean b) {
        this.x = b ? 1 : 0;
    }

}