/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 Copyright (C) 2013 Klaus Spanderen

 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

 <quantlib-dev@lists.sf.net>. The license is also available online at

 <https://www.quantlib.org/license.shtml>.

 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.

*/

/*! \file modtriplebandlinearop.hpp

    \brief modifiable triple band linear operator

*/

#ifndef quantlib_mod_triple_band_linear_op_hpp

#define quantlib_mod_triple_band_linear_op_hpp

#include <ql/methods/finitedifferences/meshers/fdmmesher.hpp>

#include <ql/methods/finitedifferences/operators/triplebandlinearop.hpp>

namespace QuantLib {

    class ModTripleBandLinearOp : public TripleBandLinearOp {

      public:

        ModTripleBandLinearOp(Size direction,

                              const ext::shared_ptr<FdmMesher>& mesher)

        : TripleBandLinearOp(direction, mesher) { }

        explicit ModTripleBandLinearOp(const TripleBandLinearOp& m)

        : TripleBandLinearOp(m) { }

        Real lower(Size i) const { return lower_[i]; }

        Real& lower(Size i) { return lower_[i]; }

        Real diag(Size i) const { return diag_[i]; }

        Real& diag(Size i) { return diag_[i]; }

        Real upper(Size i) const { return upper_[i]; }

        Real& upper(Size i) { return upper_[i]; }

    };

}

#endif