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

Initial Mercurial check in.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/samer/maths/opt/XFConvergence.java	Tue Jan 17 17:50:20 2012 +0000
@@ -0,0 +1,28 @@
+/*
+ *	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);
+	}
+}