Teko_DiagonallyScaledPreconditionerFactory.hpp

// @HEADER
// *****************************************************************************
//      Teko: A package for block and physics based preconditioning
//
// Copyright 2010 NTESS and the Teko contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef __Teko_DiagonallyScaledPreconditionerFactory_hpp__
#define __Teko_DiagonallyScaledPreconditionerFactory_hpp__
 
#include "Teuchos_Time.hpp"
 
// Teko includes
#include "Teko_PreconditionerFactory.hpp"
 
namespace Teko {

class DiagonallyScaledPreconditionerFactory : public virtual Teko::PreconditionerFactory {
 public:
  typedef enum { COLUMN_SCALING, ROW_SCALING } ScalingType;

  DiagonallyScaledPreconditionerFactory();

  DiagonallyScaledPreconditionerFactory(const Teuchos::RCP<Teko::InverseFactory>& invFactory,
                                        ScalingType columnScaling = COLUMN_SCALING,
                                        DiagonalType diagonalType = AbsRowSum);

  virtual ~DiagonallyScaledPreconditionerFactory();

  virtual LinearOp buildPreconditionerOperator(LinearOp& lo, PreconditionerState& state) const;



  virtual void initializeFromParameterList(const Teuchos::ParameterList& settings);

 
 private:
  Teuchos::RCP<Teko::InverseFactory> invFactory_;
  ScalingType scalingType_;
  DiagonalType diagonalType_;
};
 
}  // end namespace Teko
 
#endif