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.opt;
samer@0: import  samer.maths.*;
samer@0: 
samer@0: // this used to happen in QuasiNewton
samer@0: // after any step was taken (including during line searches)
samer@0: // of-course, S.h cannot change during a line search
samer@0: 
samer@0: public class XFConvergence
samer@0: {
samer@0: 	double	XTOL, FTOL;	// various tolerances
samer@0: 	
samer@0: 	public void setXTolerance( double tolx) { XTOL=tolx; }
samer@0: 	public void setFTolerance( double tolf) { FTOL=tolf; }
samer@0: 	
samer@0: 	public boolean isSatisfied(State S) 
samer@0: 	{
samer@0: 		return (Util.maxabs(S.h)<2*XTOL) && (Math.abs(S.P1.s)<2*FTOL);
samer@0: 	}
samer@0: }