samer@0: /*
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
samer@0:  *	without even the implied warranty of MERCHANTABILITY or 
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.maths;
samer@0: 
samer@0: public class Product implements Generator
samer@0: {
samer@0: 	Generator g1, g2;
samer@0: 
samer@0: 	public Product( Generator g1, Generator g2) { this.g1=g1; this.g2=g2; }
samer@0: 
samer@0: 	public void   dispose() { g1.dispose(); g2.dispose(); }
samer@0: 	public double next() { return g1.next()*g2.next(); }
samer@0: 	public void   next(double [] x) { 
samer@0: 		g1.next(x);
samer@0: 		for (int i=0; i<x.length; i++) x[i]*=g2.next(); 
samer@0: 	}
samer@0: 
samer@0: 	public String toString() { return "Product("+g1+","+g2+")"; }
samer@0: }