Ifpack_Graph_Epetra_RowMatrix.h

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//       Ifpack: Object-Oriented Algebraic Preconditioner Package
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#ifndef IFPACK_GRAPH_EPETRA_ROWMATRIX_H
#define IFPACK_GRAPH_EPETRA_ROWMATRIX_H

#include "Ifpack_ConfigDefs.h"
#include "Ifpack_Graph.h"
#include "Epetra_RowMatrix.h"
#include "Epetra_Map.h"
#include "Teuchos_RefCountPtr.hpp"

class Epetra_Comm;
class Epetra_RowMatrix;


class Ifpack_Graph_Epetra_RowMatrix : public Ifpack_Graph {

public:
    
  Ifpack_Graph_Epetra_RowMatrix(const Teuchos::RefCountPtr<const Epetra_RowMatrix>& RowMatrix);

  virtual ~Ifpack_Graph_Epetra_RowMatrix() {};

  int NumMyRows() const
  {
    return(NumMyRows_);
  }

  int NumMyCols() const
  {
    return(NumMyCols_);
  }

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int NumGlobalRows() const
  {
    if(RowMatrix_->RowMatrixRowMap().GlobalIndicesInt())
      return (int) (NumGlobalRows_);
    else
      throw "Ifpack_Graph_Epetra_RowMatrix::NumGlobalRows: GlobalIndices not int.";
  }
#endif
  long long NumGlobalRows64() const
  {
    return(NumGlobalRows_);
  }

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int NumGlobalCols() const
  {
    if(RowMatrix_->RowMatrixColMap().GlobalIndicesInt())
      return (int) (NumGlobalCols_);
    else
      throw "Ifpack_Graph_Epetra_RowMatrix::NumGlobalCols: GlobalIndices not int.";
  }
#endif
  long long NumGlobalCols64() const
  {
    return(NumGlobalCols_);
  }

  int MaxMyNumEntries() const
  {
    return(MaxNumIndices_);
  }

  int NumMyNonzeros() const;

  bool Filled() const;

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int GRID(int) const;
#endif
  long long GRID64(int) const;

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int GCID(int) const;
#endif
  long long GCID64(int) const;

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int LRID(int) const;

  int LCID(int) const;
#endif

#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES

  int LRID(long long) const;

  int LCID(long long) const;
#endif

  int ExtractMyRowCopy(int GlobalRow, int LenOfIndices, 
               int &NumIndices, int *Indices) const;

  const Epetra_Comm& Comm() const;  
  
  ostream& Print(std::ostream& os) const;

private:

  int NumMyRows_;
  int NumMyCols_;
  long long NumGlobalRows_;
  long long NumGlobalCols_;
  int MaxNumIndices_;
  Teuchos::RefCountPtr<const Epetra_RowMatrix> RowMatrix_;
  mutable std::vector<double> Values_;
};

#endif