PCG.H

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License
    This file is part of OpenFOAM.

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Class
    Foam::PCG

Description
    Preconditioned conjugate gradient solver for symmetric lduMatrices
    using a run-time selectable preconditioner.

SourceFiles
    PCG.C

\*---------------------------------------------------------------------------*/

#ifndef PCG_H
#define PCG_H

#include "lduMatrix.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
                             Class PCG Declaration
\*---------------------------------------------------------------------------*/

class PCG
:
    public lduMatrix::solver
{

public:

    //- Runtime type information
    TypeName("PCG");


    // Constructors

        //- Construct from matrix components and solver controls
        PCG
        (
            const word& fieldName,
            const lduMatrix& matrix,
            const FieldField<Field, scalar>& interfaceBouCoeffs,
            const FieldField<Field, scalar>& interfaceIntCoeffs,
            const lduInterfaceFieldPtrsList& interfaces,
            const dictionary& solverControls
        );

        //- Disallow default bitwise copy construction
        PCG(const PCG&) = delete;


    //- Destructor
    virtual ~PCG()
    {}


    // Member Functions

        //- Solve the matrix with this solver
        virtual solverPerformance solve
        (
            scalarField& psi,
            const scalarField& source,
            const direction cmpt=0
        ) const;


    // Member Operators

        //- Disallow default bitwise assignment
        void operator=(const PCG&) = delete;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //