/usr/include/dolfin/fem/LocalSolver.h is in libdolfin-dev 1.4.0+dfsg-4.
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 | // Copyright (C) 2013 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/>.
//
// First added: 2013-02-12
// Last changed:
#ifndef __LOCAL_SOLVER_H
#define __LOCAL_SOLVER_H
namespace dolfin
{
/// This class solves problems cell-wise. It computes the local
/// left-hand side A_local and the local right-hand side b_local
/// (for one cell), and solves A_local x_local = b_local. The result
/// x_local is copied into the global vector x. The operator A_local
/// must be square.
///
/// For forms with no coupling across cell edges, this function is
/// identical to a global solve. For problems with coupling across
/// cells it is not.
///
/// This class can be used for post-processing solutions, e.g. computing
/// stress fields for visualisation, far more cheaply that using
/// global projections.
// Forward declarations
class GenericVector;
class Form;
class LocalSolver
{
public:
/// Solve local (cell-wise) problem and copy result into global
/// vector x.
void solve(GenericVector& x, const Form& a, const Form& L,
bool symmetric=false) const;
};
}
#endif
|