LduMatrixPreconditioner.C

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM 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 General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "LduMatrix.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class Type, class DType, class LUType>
Foam::autoPtr<typename Foam::LduMatrix<Type, DType, LUType>::preconditioner>
Foam::LduMatrix<Type, DType, LUType>::preconditioner::New
(
    const solver& sol,
    const dictionary& preconditionerDict
)
{
    const word preconditionerName
    (
        preconditionerDict.get<word>("preconditioner")
    );
 
    if (sol.matrix().symmetric())
    {
        auto cstrIter =
            symMatrixConstructorTablePtr_->cfind(preconditionerName);
 
        if (!cstrIter.found())
        {
            FatalIOErrorInLookup
            (
                preconditionerDict,
                "symmetric matrix preconditioner",
                preconditionerName,
                *symMatrixConstructorTablePtr_
            ) << exit(FatalIOError);
        }
 
        return autoPtr<typename LduMatrix<Type, DType, LUType>::preconditioner>
        (
            cstrIter()
            (
                sol,
                preconditionerDict
            )
        );
    }
    else if (sol.matrix().asymmetric())
    {
        auto cstrIter =
            asymMatrixConstructorTablePtr_->cfind(preconditionerName);
 
        if (!cstrIter.found())
        {
            FatalIOErrorInLookup
            (
                preconditionerDict,
                "asymmetric matrix preconditioner",
                preconditionerName,
                *asymMatrixConstructorTablePtr_
            ) << exit(FatalIOError);
        }
 
        return autoPtr<typename LduMatrix<Type, DType, LUType>::preconditioner>
        (
            cstrIter()
            (
                sol,
                preconditionerDict
            )
        );
    }
 
    FatalIOErrorInFunction(preconditionerDict)
        << "Cannot precondition incomplete matrix, "
           "no diagonal or off-diagonal coefficient"
        << exit(FatalIOError);
 
    return nullptr;
}
 
 
// ************************************************************************* //