MueLu_ProjectorSmoother_decl.hpp

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#ifndef MUELU_PROJECTORSMOOTHER_DECL_HPP
#define MUELU_PROJECTORSMOOTHER_DECL_HPP

#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_MultiVector_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"

#include "MueLu_SmootherPrototype.hpp"
#include "MueLu_FactoryBase_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"

namespace MueLu {

  template <class Scalar = SmootherPrototype<>::scalar_type,
            class LocalOrdinal = typename SmootherPrototype<Scalar>::local_ordinal_type,
            class GlobalOrdinal = typename SmootherPrototype<Scalar, LocalOrdinal>::global_ordinal_type,
            class Node = typename SmootherPrototype<Scalar, LocalOrdinal, GlobalOrdinal>::node_type>
  class ProjectorSmoother : public SmootherPrototype<Scalar,LocalOrdinal,GlobalOrdinal,Node>
  {
#undef MUELU_PROJECTORSMOOTHER_SHORT
#include "MueLu_UseShortNames.hpp"

  public:



    ProjectorSmoother(RCP<SmootherPrototype> coarseSolver);

    virtual ~ProjectorSmoother();



    void DeclareInput(Level &currentLevel) const;




    void Setup(Level &currentLevel);

    void Apply(MultiVector& X, const MultiVector& B, bool InitialGuessIsZero = false) const;

    RCP<SmootherPrototype> Copy() const;



    std::string description() const;

    //using MueLu::Describable::describe; // overloading, not hiding
    void print(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;

    size_t getNodeSmootherComplexity() const {return coarseSolver_->getNodeSmootherComplexity();}



  private:
    RCP<MultiVector>             Borth_;
    RCP<SmootherPrototype>       coarseSolver_;

  }; // class ProjectorSmoother

} // namespace MueLu

#define MUELU_PROJECTORSMOOTHER_SHORT
#endif // MUELU_PROJECTORSMOOTHER_DECL_HPP