/*
* This file is part of JGAP.
*
* JGAP offers a dual license model containing the LGPL as well as the MPL.
*
* For licensing information please see the file license.txt included with JGAP
* or have a look at the top of class org.jgap.Chromosome which representatively
* includes the JGAP license policy applicable for any file delivered with JGAP.
*/
package org.jgap.gp.function;
import org.jgap.*;
import org.jgap.gp.*;
import org.jgap.gp.impl.*;
import org.jgap.util.*;
/**
* Returns a double/float value with a positive sign, greater than or equal to
* 0.0 and less than 1.0.
*
* @author Klaus Meffert
* @since 3.3.4
*/
public class RandomGenerator
extends MathCommand implements ICloneable {
/** String containing the CVS revision. Read out via reflection!*/
private final static String CVS_REVISION = "$Revision: 1.3 $";
public RandomGenerator(final GPConfiguration a_conf, Class a_returnType)
throws InvalidConfigurationException {
super(a_conf, 0, a_returnType);
}
public String toString() {
return "random";
}
/**
* @return textual name of this command
*
* @author Klaus Meffert
* @since 3.3.4
*/
public String getName() {
return "Random";
}
public float execute_float(ProgramChromosome c, int n, Object[] args) {
return (float) Math.random();
}
public double execute_double(ProgramChromosome c, int n, Object[] args) {
return Math.random();
}
/**
* Clones the object. Simple and straight forward implementation here.
*
* @return cloned instance of this object
*
* @author Klaus Meffert
* @since 3.4
*/
public Object clone() {
try {
RandomGenerator result = new RandomGenerator(getGPConfiguration(),
getReturnType());
return result;
} catch (Exception ex) {
throw new CloneException(ex);
}
}
}