Teko_LSCSIMPLECStrategy.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_LSCSIMPLECStrategy_hpp__
#define __Teko_LSCSIMPLECStrategy_hpp__

#include "Teko_LSCStrategy.hpp"

namespace Teko {
namespace NS {

class LSCPrecondState;  // forward declration

class LSCSIMPLECStrategy : public LSCStrategy {
 public:

  LSCSIMPLECStrategy();

  virtual ~LSCSIMPLECStrategy() {}



  virtual void buildState(BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual LinearOp getInvBQBt(const BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual LinearOp getInvBHBt(const BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual LinearOp getInvF(const BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual LinearOp getOuterStabilization(const BlockedLinearOp & /* A */,
                                         BlockPreconditionerState & /* state */) const {
    return Teuchos::null;
  }

  virtual LinearOp getInnerStabilization(const BlockedLinearOp &A,
                                         BlockPreconditionerState &state) const;

  virtual LinearOp getInvMass(const BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual LinearOp getHScaling(const BlockedLinearOp &A, BlockPreconditionerState &state) const;

  virtual bool useFullLDU() const { return useFullLDU_; }

  virtual void initializeFromParameterList(const Teuchos::ParameterList &pl,
                                           const InverseLibrary &invLib);

  virtual void initializeState(const BlockedLinearOp &A, LSCPrecondState *state) const;

  void computeInverses(const BlockedLinearOp &A, LSCPrecondState *state) const;

  virtual void setUseFullLDU(bool val) { useFullLDU_ = val; }

  virtual void setSymmetric(bool /* isSymmetric */) {}

 protected:
  // how to invert the matrices
  Teuchos::RCP<InverseFactory> invFactoryF_;
  Teuchos::RCP<InverseFactory> invFactoryS_;

  // flags for handling various options
  bool useFullLDU_;
  DiagonalType scaleType_;

 private:
  LSCSIMPLECStrategy(const LSCSIMPLECStrategy &);
};

}  // end namespace NS
}  // end namespace Teko

#endif