tablebooleanfunction.java

来自「Java遗传算法库」· Java 代码 · 共 66 行

/*
 * TableBooleanFunction.java
 *
 * Created on 10 June 2003, 15:09
 */

package jaga.pj.circuits.experiment;

import jaga.experiment.TestPatternGenerator;
import jaga.experiment.CompleteShuffledTPG;

/** First input defines MSB of table address
 *
 * @author  mmg20
 */
public class TableBooleanFunction implements BooleanFunction {
    
    protected boolean[] table;
    protected int nrIns;
    protected TestPatternGenerator tpg = new CompleteShuffledTPG();
    
    public TableBooleanFunction( int nrInputs, boolean[] table, TestPatternGenerator tpg  ) {
        this( nrInputs, table );
        this.tpg = tpg;
    }
    
    /** Creates a new instance of TableBooleanFunction */
    public TableBooleanFunction( int nrInputs, boolean[] table ) {
        this.table = table;
        nrIns = nrInputs;
    }
    
    /** returns the amount of inputs needed to compute this function
     */
    public int getNumOfInputs() {
        return nrIns;
    }
    
    /** returns the result of this function given the inputs in the array
     * @param inputs what values the inputs to the function have
     */
    public boolean getResult(boolean[] inputs) {
        int add = 0;
        for( int il = 0; il < nrIns; il++ )
        {
            if( inputs[ il ] )
            {
                add += 1 << ( nrIns - il - 1 );
            }
        }
        return table[ add ];
    }
    
    /** returns a set of SampleDatas providing a good set of input samples
     * to test this function
     */
    public jaga.SampleData[] getTestData() {
        return tpg.getPattern( nrIns );
    }
    
    public void setRandomSeed(long seed) {
        tpg.setRandomSeed( seed );
    }
    
}