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.random;
samer@0: import  samer.maths.*;
samer@0: import  samer.core.types.*;
samer@0: 
samer@0: public class SparseMixture extends BaseRandom
samer@0: {
samer@0: 	VDouble		p = new VDouble("p",0.5);
samer@0: 	Generator	g1;
samer@0: 	
samer@0: 	public void dispose() { g1.dispose(); p.dispose(); }
samer@0: 	public double next() { return (rnd.nextDouble()<p.value) ? 0 : g1.next(); }
samer@0: 
samer@0: 	public SparseMixture(Generator g1) { this.g1=g1; }
samer@0: 	public String toString() { return "Sparsified "+g1; }
samer@0: }