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99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/*
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Copyright 2013 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_AUTODIFFVEC_HEADER_INCLUDED
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#define OPM_AUTODIFFVEC_HEADER_INCLUDED
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#include "AutoDiff.hpp"
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#include <Eigen/Eigen>
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#include <Eigen/Sparse>
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namespace AutoDiff
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{
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template <typename Scalar>
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class ForwardVec
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{
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public:
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typedef Eigen::Array<Scalar, Eigen::Dynamic, 1> V;
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typedef Eigen::SparseMatrix<Scalar> M;
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static ForwardVec constant(const V& val)
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{
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return ForwardVec(val);
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}
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static ForwardVec variable(const V& val)
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{
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ForwardVec ret(val);
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ret.jac_.reserve(Eigen::VectorXi::Constant(val.size(), 1));
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for (typename M::Index row = 0; row < val.size(); ++row) {
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ret.jac_.insert(row, row) = Scalar(1.0);
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}
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ret.jac_.makeCompressed();
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return ret;
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}
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static ForwardVec function(const V& val, const M& jac)
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{
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return ForwardVec(val, jac);
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}
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explicit ForwardVec(const V& val)
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: val_(val), jac_(val.size(), val.size())
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{
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}
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ForwardVec(const V& val, const M& jac)
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: val_(val), jac_(jac)
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{
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}
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template <class Ostream>
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Ostream&
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print(Ostream& os) const
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{
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os << "val =\n" << val_ << "\n\njac =\n" << jac_ << "\n";
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return os;
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}
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private:
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V val_;
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M jac_;
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};
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template <class Ostream, typename Scalar>
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Ostream&
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operator<<(Ostream& os, const ForwardVec<Scalar>& fw)
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{
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return fw.print(os);
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}
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} // namespace Autodiff
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#endif // OPM_AUTODIFFVEC_HEADER_INCLUDED
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