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

 Copyright (C) 2008 Andreas Gaida
 Copyright (C) 2008 Ralph Schreyer
 Copyright (C) 2008 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

 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 fdmmesher.hpp
    \brief mesher for a fdm grid
#ifndef quantlib_fdm_mesher_hpp
#define quantlib_fdm_mesher_hpp

#include <ql/math/array.hpp>
#include <ql/experimental/finitedifferences/fdmlinearoplayout.hpp>
#include <boost/shared_ptr.hpp>
#include <vector>

namespace QuantLib {

00035     class FdmMesher {
        FdmMesher(const boost::shared_ptr<FdmLinearOpLayout>& layout)
        : layout_(layout) {}
        virtual ~FdmMesher() {}

        virtual Real dplus(const FdmLinearOpIterator& iter,
                           Size direction)  const = 0;
        virtual Real dminus(const FdmLinearOpIterator& iter,
                            Size direction) const = 0;
        virtual Real location(const FdmLinearOpIterator& iter ,
                              Size direction) const = 0;
        virtual Disposable<Array> locations(Size direction) const = 0;

        const boost::shared_ptr<FdmLinearOpLayout>& layout() const {
            return layout_;

        const boost::shared_ptr<FdmLinearOpLayout> layout_;


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