/*
Copyright (C) 2009 Praneet Tiwari

This source code is release under the BSD License.

This file is part of JQuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://jquantlib.org/

JQuantLib is free software: you can redistribute it and/or modify it
under the terms of the JQuantLib license.  You should have received a
copy of the license along with this program; if not, please email
. The license is also available online at
.

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 license for more details.

JQuantLib is based on QuantLib. http://quantlib.org/
When applicable, the original copyright notice follows this notice.
 */
/*
 Copyright (C) 2001, 2002, 2003 Sadruddin Rejeb

 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/

 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 . The license is also available online at
 .

 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 license for more details.
*/

package org.jquantlib.model;

import org.jquantlib.math.matrixutilities.Array;
import org.jquantlib.math.optimization.NoConstraint;

/**
 * Parameter which is always zero {@latex$ a(t) = 0 }
 *
 * @author Praneet Tiwari
 */
//FIXME: refactor

public class NullParameter extends Parameter {

    public NullParameter() {
        super(0, new Impl(), new NoConstraint());
    }


    //
    // protected inner classes
    //

    static protected class Impl implements Parameter.Impl {

        @Override
        public /* @Real */ double value(final Array params, final /* @Time */ double t) {
            return 0.0;
        }
    }

}