Teko_PresLaplaceLSCStrategy.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_PresLaplaceLSCStrategy_hpp__
#define __Teko_PresLaplaceLSCStrategy_hpp__

#include "Teko_LSCStrategy.hpp"

namespace Teko {
namespace NS {

class LSCPrecondState; // forward declration

class PresLaplaceLSCStrategy : public LSCStrategy {
public:

   PresLaplaceLSCStrategy();
   PresLaplaceLSCStrategy(const Teuchos::RCP<InverseFactory> & factory);
   PresLaplaceLSCStrategy(const Teuchos::RCP<InverseFactory> & invFactF,
                  const Teuchos::RCP<InverseFactory> & invFactS);

   virtual ~PresLaplaceLSCStrategy() {}



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

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

   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 setSymmetric(bool isSymmetric) 
   { isSymmetric_ = isSymmetric; }

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

   virtual Teuchos::RCP<Teuchos::ParameterList> getRequestedParameters() const;

   virtual bool updateRequestedParameters(const Teuchos::ParameterList & pl);

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

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

   virtual void setEigSolveParam(int sz) { eigSolveParam_ = sz; }

   virtual int getEigSolveParam() { return eigSolveParam_; }

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

protected:
   // how to invert the matrices
   Teuchos::RCP<InverseFactory> invFactoryV_;
   Teuchos::RCP<InverseFactory> invFactoryP_;

   // flags for handling various options
   bool isSymmetric_;
   int eigSolveParam_;
   bool useFullLDU_;

   // scaling operator parameters
   bool useMass_;
   DiagonalType scaleType_; 

private:
   PresLaplaceLSCStrategy(const PresLaplaceLSCStrategy &);

public:
   // some static functions for determining strings

   static std::string getPressureLaplaceString() { return "Pressure Laplace Operator"; }
   static std::string getVelocityMassString() { return "Velocity Mass Operator"; }
};

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

#endif