/*
* 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 examples.gp.symbolicRegression;
import org.jgap.*;
import org.jgap.gp.*;
import org.jgap.gp.impl.*;
import org.jgap.util.*;
/**
* The modulo operation.
*
* @author Konrad Odell
* @author Klaus Meffert
* @since 3.5
*/
public class ModuloD
extends MathCommand implements ICloneable {
/** String containing the CVS revision. Read out via reflection!*/
private static final String CVS_REVISION = "$Revision: 1.1 $";
public ModuloD(final GPConfiguration a_conf, Class a_returnType)
throws InvalidConfigurationException {
super(a_conf, 2, a_returnType);
}
public String toString() {
return "&1 % &2";
}
/**
* @return textual name of this command
*
* @author Klaus Meffert
* @since 3.2
*/
public String getName() {
return "ModuloD";
}
public int execute_int(ProgramChromosome c, int n, Object[] args) {
int v1 = c.execute_int(n, 0, args);
int v2 = c.execute_int(n, 1, args);
if (v2 == 0) {
return 0;
}
return v1 % v2;
}
public long execute_long(ProgramChromosome c, int n, Object[] args) {
long v1 = c.execute_long(n, 0, args);
long v2 = c.execute_long(n, 1, args);
if (v2 == 0) {
return 0;
}
return v1 % v2;
}
public float execute_float(ProgramChromosome c, int n, Object[] args) {
float v1 = c.execute_float(n, 0, args);
float v2 = c.execute_float(n, 1, args);
if (Math.abs(v2) < DELTA) {
return 0;
}
Integer i1 = (int) v1;
Integer i2 = (int) v2;
if (i2 == 0) {
return 1;
}
return i1 % i2;
}
// hakank: First truncate to Integer and then take the modulo
public double execute_double(ProgramChromosome c, int n, Object[] args) {
double v1 = c.execute_double(n, 0, args);
double v2 = c.execute_double(n, 1, args);
if (Math.abs(v2) < DELTA) {
return 0;
}
Integer i1 = (int) v1;
Integer i2 = (int) v2;
if (i2 == 0) {
return 1;
}
return i1 % i2;
}
public Object execute_object(ProgramChromosome c, int n, Object[] args) {
try {
return ( (Compatible) c.execute_object(n, 0, args)).execute_mod(c.
execute_object(n, 1, args));
} catch (ArithmeticException aex) {
throw new IllegalStateException("mod with illegal arguments");
}
}
protected interface Compatible {
public Object execute_mod(Object o);
}
/**
* 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 {
ModuloD result = new ModuloD(getGPConfiguration(), getReturnType());
return result;
} catch (Exception ex) {
throw new CloneException(ex);
}
}
}