/usr/include/dolfin/la/LUSolver.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 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 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | // Copyright (C) 2007-2010 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 Ola Skavhaug 2008
// Modified by Dag Lindbo 2008
// Modified by Anders Logg 2008-2012
// Modified by Kent-Andre Mardal 2008
//
// First added: 2007-07-03
// Last changed: 2014-05-27
#ifndef __LU_SOLVER_H
#define __LU_SOLVER_H
#include <string>
#include <memory>
#include "GenericLUSolver.h"
namespace dolfin
{
// Forward declarations
class GenericLinearOperator;
class GenericVector;
/// LU solver for the built-in LA backends.
class LUSolver : public GenericLUSolver
{
public:
/// Constructor
LUSolver(std::string method= "default");
/// Constructor
LUSolver(std::shared_ptr<const GenericLinearOperator> A,
std::string method="default");
/// Destructor
~LUSolver();
/// Set operator (matrix)
void set_operator(std::shared_ptr<const GenericLinearOperator> A);
/// Solve linear system Ax = b
std::size_t solve(GenericVector& x, const GenericVector& b);
/// Solve linear system A^Tx = b
std::size_t solve_transpose(GenericVector& x, const GenericVector& b);
/// Solve linear system
std::size_t solve(const GenericLinearOperator& A, GenericVector& x,
const GenericVector& b);
/// Solve linear system
std::size_t solve_transpose(const GenericLinearOperator& A,
GenericVector& x, const GenericVector& b);
/// Default parameter values
static Parameters default_parameters()
{
Parameters p("lu_solver");
p.add("report", true);
p.add("verbose", false);
p.add("symmetric", false);
p.add("same_nonzero_pattern", false);
p.add("reuse_factorization", false);
return p;
}
/// Update solver parameters (pass parameters down to wrapped implementation)
virtual void update_parameters(const Parameters& parameters)
{
this->parameters.update(parameters);
solver->parameters.update(parameters);
}
// FIXME: This should not be needed. Need to cleanup linear solver
// name jungle: default, lu, iterative, direct, krylov, etc
/// Return parameter type: "krylov_solver" or "lu_solver"
std::string parameter_type() const
{
return "lu_solver";
}
private:
// Initialize solver
void init(std::string method);
// Solver
std::shared_ptr<GenericLinearSolver> solver;
};
}
#endif
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