package org.freehep.math.minuit.example.tutorial;
import org.freehep.math.minuit.FCNBase;
/**
*
* @version $Id: Quad4F.java 8584 2006-08-10 23:06:37Z duns $
*/
class Quad4F implements FCNBase
{
public double valueOf(double[] par)
{
double x = par[0];
double y = par[1];
double z = par[2];
double w = par[3];
return ( (1./70.)*(21*x*x + 20*y*y + 19*z*z - 14*x*z - 20*y*z) + w*w );
}
}