/*
 * Copyright (C) 2012 lgasche
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package scripts;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import fr.ifremer.isisfish.util.Doc;
import fr.ifremer.isisfish.entities.*;
import org.nuiton.math.matrix.*;
import fr.ifremer.isisfish.types.TimeStep;
import fr.ifremer.isisfish.util.Nocache;

/**
 * FonctionObjectif_Baranov.java
 *
 * Created: 10 aout 2012
 *
 * @author lgasche <user.name@vcs.hostName>
 * @version $Revision: 0 $
 *
 * Last update: $Date: 10 aout 2012 $
 * by : $Author: lgasche $
 */

@Nocache
public class FonctionObjectif_Baranov extends FonctionObjectif {

    /** to use log facility, just put in your code: log.info("..."); */
    private static Log log = LogFactory.getLog(FonctionObjectif_Baranov.class);

	protected double C, M, N;
	
	public FonctionObjectif_Baranov(double C, double M, double N) { // step ??
		this.C = C;
		this.M = M;
		this.N = N;
		log.info("C= " + C);
		log.info("M= " + M);
		log.info("N= " + N);
	}
	
	// add your method here
    //public double optimize(double xx) {
	public double calc(Object o, double xx) {	
		double ff;
		ff = Math.pow((C - (xx/(xx+M))*(1-Math.exp(-(xx+M)))*N),2);
		log.info("Cbis= " + C);
		log.info("Mbis= " + M);
		log.info("Nbis= " + N);
		log.info("ff= " + ff);
		log.info("xx= " + xx);
		return ff;  
	}
}