SR1.H

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    Copyright (C) 2013-2021 FOSS GP
    Copyright (C) 2019 OpenCFD Ltd.
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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
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    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/>.
 
 
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
 
// ************************************************************************* //