/usr/include/ql/experimental/finitedifferences/ninepointlinearop.hpp is in libquantlib0-dev 1.1-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
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
<http://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 ninepointlinearop.hpp
\brief nine point linear operator
*/
#ifndef quantlib_nine_point_linear_op_hpp
#define quantlib_nine_point_linear_op_hpp
#include <ql/experimental/finitedifferences/fdmmesher.hpp>
#include <ql/experimental/finitedifferences/fdmlinearop.hpp>
#include <boost/shared_array.hpp>
namespace QuantLib {
class NinePointLinearOp : public FdmLinearOp {
public:
NinePointLinearOp(Size d0, Size d1,
const boost::shared_ptr<FdmMesher>& mesher);
NinePointLinearOp(const NinePointLinearOp& m);
NinePointLinearOp(const Disposable<NinePointLinearOp>& m);
NinePointLinearOp& operator=(const NinePointLinearOp& m);
NinePointLinearOp& operator=(const Disposable<NinePointLinearOp>& m);
Disposable<Array> apply(const Array& r) const;
Disposable<NinePointLinearOp> mult(const Array& u) const;
void swap(NinePointLinearOp& m);
protected:
NinePointLinearOp() {}
Size d0_, d1_;
boost::shared_array<Size> i00_, i10_, i20_;
boost::shared_array<Size> i01_, i21_;
boost::shared_array<Size> i02_, i12_, i22_;
boost::shared_array<Real> a00_, a10_, a20_;
boost::shared_array<Real> a01_, a11_, a21_;
boost::shared_array<Real> a02_, a12_, a22_;
boost::shared_ptr<FdmMesher> mesher_;
};
}
#endif
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