SR1.H

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License
    This file is part of OpenFOAM.

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Class
    Foam::SR1

Description
    The quasi-Newton Symmetric Rank One formula.
    The quasiNewton::Hessian corresponds to Hessian inverse for SR1

SourceFiles
    SR1.C

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

#ifndef SR1_H
#define SR1_H

#include "quasiNewton.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                             Class SR1 Declaration
\*---------------------------------------------------------------------------*/

class SR1
:
    public quasiNewton
{
protected:

    // Protected data

        //- For stability check
        scalar ratioThreshold_;


    // Protected Member Functions

        //- Update approximation of the inverse Hessian
        virtual void updateHessian();

        //- Update design variables
        virtual void update();


private:

    // Private Member Functions

        //- No copy construct
        SR1(const SR1&) = delete;

        //- No copy assignment
        void operator=(const SR1&) = delete;


public:

    //- Runtime type information
    TypeName("SR1");


    // Constructors

        //- Construct from components
        SR1
        (
            const fvMesh& mesh,
            const dictionary& dict,
            autoPtr<designVariables>& designVars,
            const label nConstraints,
            const word& type
        );


    //- Destructor
    virtual ~SR1() = default;
};


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

} // End namespace Foam

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

#endif

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