80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "DiagonalPreconditioner.H"
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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template<class Type, class DType, class LUType>
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Foam::DiagonalPreconditioner<Type, DType, LUType>::DiagonalPreconditioner
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(
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const typename LduMatrix<Type, DType, LUType>::solver& sol,
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const dictionary&
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)
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:
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LduMatrix<Type, DType, LUType>::preconditioner(sol),
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rD(sol.matrix().diag().size())
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{
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DType* __restrict__ rDPtr = rD.begin();
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const DType* __restrict__ DPtr = this->solver_.matrix().diag().begin();
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label nCells = rD.size();
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// Generate inverse (reciprocal for scalar) diagonal
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for (label cell=0; cell<nCells; cell++)
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{
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rDPtr[cell] = inv(DPtr[cell]);
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}
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}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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template<class Type, class DType, class LUType>
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void Foam::DiagonalPreconditioner<Type, DType, LUType>::read(const dictionary&)
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{}
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template<class Type, class DType, class LUType>
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void Foam::DiagonalPreconditioner<Type, DType, LUType>::precondition
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(
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Field<Type>& wA,
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const Field<Type>& rA
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) const
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{
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Type* __restrict__ wAPtr = wA.begin();
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const Type* __restrict__ rAPtr = rA.begin();
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const DType* __restrict__ rDPtr = rD.begin();
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label nCells = wA.size();
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for (label cell=0; cell<nCells; cell++)
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{
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wAPtr[cell] = dot(rDPtr[cell], rAPtr[cell]);
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}
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}
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// ************************************************************************* //
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