Teko_LSCSIMPLECStrategy.hpp

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