/usr/include/dolfin/fem/LinearVariationalProblem.h is in libdolfin-dev 2016.2.0-2.
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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | // Copyright (C) 2011 Anders Logg
//
// 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/>.
#ifndef __LINEAR_VARIATIONAL_PROBLEM_H
#define __LINEAR_VARIATIONAL_PROBLEM_H
#include <memory>
#include <vector>
#include <dolfin/common/Hierarchical.h>
namespace dolfin
{
// Forward declarations
class DirichletBC;
class Form;
class Function;
class FunctionSpace;
/// This class represents a linear variational problem:
///
/// Find u in V such that
///
/// a(u, v) = L(v) for all v in V^,
///
/// where V is the trial space and V^ is the test space.
class LinearVariationalProblem : public Hierarchical<LinearVariationalProblem>
{
public:
/// Create linear variational problem with a list of boundary
/// conditions
LinearVariationalProblem(std::shared_ptr<const Form> a,
std::shared_ptr<const Form> L,
std::shared_ptr<Function> u,
std::vector<std::shared_ptr<const DirichletBC>> bcs);
/// Return bilinear form
std::shared_ptr<const Form> bilinear_form() const;
/// Return linear form
std::shared_ptr<const Form> linear_form() const;
/// Return solution variable
std::shared_ptr<Function> solution();
/// Return solution variable (const version)
std::shared_ptr<const Function> solution() const;
/// Return boundary conditions
std::vector<std::shared_ptr<const DirichletBC>> bcs() const;
/// Return trial space
std::shared_ptr<const FunctionSpace> trial_space() const;
/// Return test space
std::shared_ptr<const FunctionSpace> test_space() const;
private:
// Check forms
void check_forms() const;
// The bilinear form
std::shared_ptr<const Form> _a;
// The linear form
std::shared_ptr<const Form> _l;
// The solution
std::shared_ptr<Function> _u;
// The Dirichlet boundary conditions
std::vector<std::shared_ptr<const DirichletBC>> _bcs;
};
}
#endif
|