/usr/include/dolfin/fem/LinearVariationalSolver.h is in libdolfin-dev 2017.2.0.post0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | // Copyright (C) 2008-2011 Anders Logg and Garth N. Wells
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// Modified by Marie E. Rognes, 2011.
//
// First added: 2011-01-14 (2008-12-26 as VariationalProblem)
// Last changed: 2011-10-20
#ifndef __LINEAR_VARIATIONAL_SOLVER_H
#define __LINEAR_VARIATIONAL_SOLVER_H
#include <dolfin/common/Variable.h>
#include <dolfin/la/LUSolver.h>
#include <dolfin/la/KrylovSolver.h>
namespace dolfin
{
// Forward declarations
class LinearVariationalProblem;
/// This class implements a solver for linear variational problems.
class LinearVariationalSolver : public Variable
{
public:
/// Create linear variational solver for given problem
explicit LinearVariationalSolver(std::shared_ptr<LinearVariationalProblem> problem);
/// Solve variational problem
void solve();
/// Default parameter values
static Parameters default_parameters()
{
Parameters p("linear_variational_solver");
p.add("linear_solver", "default");
p.add("preconditioner", "default");
p.add("symmetric", false);
p.add("print_rhs", false);
p.add("print_matrix", false);
p.add(LUSolver::default_parameters());
p.add(KrylovSolver::default_parameters());
return p;
}
private:
// The linear problem
std::shared_ptr<LinearVariationalProblem> _problem;
};
}
#endif
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