MueLu_PermutingSmoother_decl.hpp

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/*
 * MueLu_PermutingSmoother_decl.hpp
 *
 *  Created on: Nov 28, 2012
 *      Author: wiesner
 */

#ifndef MUELU_PERMUTINGSMOOTHER_DECL_HPP
#define MUELU_PERMUTINGSMOOTHER_DECL_HPP

#include <Teuchos_ParameterList.hpp>
#include <Xpetra_CrsMatrixWrap_fwd.hpp>
#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_Vector_fwd.hpp>
#include <Xpetra_VectorFactory_fwd.hpp>
#include <Xpetra_MultiVector_fwd.hpp>
#include <Xpetra_MultiVectorFactory_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"

#include "MueLu_SmootherPrototype.hpp"
#include "MueLu_TrilinosSmoother_fwd.hpp"
#include "MueLu_FactoryBase_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"
#include "MueLu_PermutationFactory_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 PermutingSmoother : public SmootherPrototype<Scalar,LocalOrdinal,GlobalOrdinal,Node>
  {
#undef MUELU_PERMUTINGSMOOTHER_SHORT
#include "MueLu_UseShortNames.hpp"

  public:



    PermutingSmoother(std::string const & mapName, const RCP<const FactoryBase> & mapFact, std::string const & type = "", const Teuchos::ParameterList& paramList = Teuchos::ParameterList(), LO const & overlap = 0, RCP<FactoryBase> permFact = Teuchos::null);

    virtual ~PermutingSmoother();



    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 s_->getNodeSmootherComplexity();}


  private:
    std::string type_;

    LO overlap_;

    RCP<FactoryBase> permFact_;

    RCP<Matrix> permQT_;

    RCP<Matrix> permP_;

    Teuchos::RCP<Matrix> diagScalingOp_;

    //
    // Underlying Smoother
    //

    RCP<SmootherPrototype> s_; // TrilinosSmoother object

  }; // class PermutingSmoother

} // namespace MueLu

#define MUELU_PERMUTINGSMOOTHER_SHORT
#endif /* MUELU_PERMUTINGSMOOTHER_DECL_HPP */