/usr/include/dolfin/la/Ifpack2Preconditioner.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 76 77 78 79 80 81 82 83 84 | // Copyright (C) 2014 Chris Richardson
//
// 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 __DOLFIN_IFPACK2_PRECONDITIONER_H
#define __DOLFIN_IFPACK2_PRECONDITIONER_H
#ifdef HAS_TRILINOS
#include <map>
#include <memory>
#include <Ifpack2_Factory.hpp>
#include <dolfin/common/types.h>
#include "TpetraMatrix.h"
#include "TpetraVector.h"
#include "TrilinosPreconditioner.h"
namespace dolfin
{
/// Forward declarations
class BelosKrylovSolver;
/// Implements preconditioners using Ifpack2 from Trilinos
class Ifpack2Preconditioner : public TrilinosPreconditioner, public Variable
{
public:
/// Create a particular preconditioner object
explicit Ifpack2Preconditioner(std::string type = "default");
/// Destructor
virtual ~Ifpack2Preconditioner();
/// Set the preconditioner type on a solver
virtual void set(BelosKrylovSolver& solver);
/// Return informal string representation (pretty-print)
std::string str(bool verbose) const;
/// Initialise preconditioner based on Operator P
virtual void init(std::shared_ptr<const TpetraMatrix> P);
/// Return a list of available preconditioners
static std::map<std::string, std::string> preconditioners();
/// Default parameter values
static Parameters default_parameters();
private:
// name of preconditioner
std::string _name;
typedef Ifpack2::Preconditioner<double, int, dolfin::la_index,
TpetraVector::node_type> prec_type;
// Ifpack2 preconditioner, to be constructed from a
// Tpetra Operator or Matrix
Teuchos::RCP<prec_type> _prec;
};
}
#endif
#endif
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