view src/samer/maths/opt/XFConvergence.java @ 0:bf79fb79ee13

Initial Mercurial check in.

/*
 *	Copyright (c) 2000, Samer Abdallah, King's College London.
 *	All rights reserved.
 *
 *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
 *	without even the implied warranty of MERCHANTABILITY or 
 *	FITNESS FOR A PARTICULAR PURPOSE.
 */

package samer.maths.opt;
import  samer.maths.*;

// this used to happen in QuasiNewton
// after any step was taken (including during line searches)
// of-course, S.h cannot change during a line search

public class XFConvergence
{
	double	XTOL, FTOL;	// various tolerances
	
	public void setXTolerance( double tolx) { XTOL=tolx; }
	public void setFTolerance( double tolf) { FTOL=tolf; }
	
	public boolean isSatisfied(State S) 
	{
		return (Util.maxabs(S.h)<2*XTOL) && (Math.abs(S.P1.s)<2*FTOL);
	}
}