MueLu_CoalesceDropFactory_decl.hpp

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#ifndef MUELU_COALESCEDROPFACTORY_DECL_HPP
#define MUELU_COALESCEDROPFACTORY_DECL_HPP

#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_MultiVector_fwd.hpp>
#include <Xpetra_VectorFactory_fwd.hpp>
#include <Xpetra_Vector_fwd.hpp>
#include <Xpetra_ImportFactory_fwd.hpp>
#include <Xpetra_MapFactory_fwd.hpp>
#include <Xpetra_CrsGraph_fwd.hpp>
#include <Xpetra_CrsGraphFactory.hpp> //TODO
#include <Xpetra_StridedMap_fwd.hpp>
#include <Xpetra_Map_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"
#include "MueLu_SingleLevelFactoryBase.hpp"
#include "MueLu_CoalesceDropFactory_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"

#include "MueLu_Level_fwd.hpp"
#include "MueLu_GraphBase.hpp"
#include "MueLu_Graph_fwd.hpp"
#include "MueLu_LWGraph_fwd.hpp"
#include "MueLu_AmalgamationInfo_fwd.hpp"
#include "MueLu_AmalgamationFactory_fwd.hpp"
#include "MueLu_PreDropFunctionBaseClass_fwd.hpp"
#include "MueLu_PreDropFunctionConstVal_fwd.hpp"

namespace MueLu {

  template <class Scalar = double,
            class LocalOrdinal = int,
            class GlobalOrdinal = LocalOrdinal,
            class Node = KokkosClassic::DefaultNode::DefaultNodeType>
  class CoalesceDropFactory : public SingleLevelFactoryBase {
#undef MUELU_COALESCEDROPFACTORY_SHORT
#include "MueLu_UseShortNames.hpp"

  public:



    CoalesceDropFactory();

    virtual ~CoalesceDropFactory() { }

    RCP<const ParameterList> GetValidParameterList() const;




    void DeclareInput(Level &currentLevel) const;

    void SetPreDropFunction(const RCP<MueLu::PreDropFunctionBaseClass<Scalar,LocalOrdinal,GlobalOrdinal,Node> > &predrop) { predrop_ = predrop; }


    void Build(Level &currentLevel) const; // Build

  private:

    // pre-drop function
    mutable
     RCP<PreDropFunctionBaseClass> predrop_;

    void MergeRows(const Matrix& A, const LO row, Array<LO>& cols, const Array<LO>& translation) const;
    void MergeRowsWithDropping(const Matrix& A, const LO row, const ArrayRCP<const SC>& ghostedDiagVals, SC threshold, Array<LO>& cols, const Array<LO>& translation) const;
  }; //class CoalesceDropFactory

} //namespace MueLu

#define MUELU_COALESCEDROPFACTORY_SHORT
#endif // MUELU_COALESCEDROPFACTORY_DECL_HPP