Ifpack_Graph_Epetra_CrsGraph.h

/*@HEADER
// ***********************************************************************
//
//       Ifpack: Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2002) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/

#ifndef IFPACK_EPETRA_CRSGRAPH_H
#define IFPACK_EPETRA_CRSGRAPH_H
#include "Ifpack_ConfigDefs.h"
#include "Ifpack_Graph.h"
#include "Epetra_CrsGraph.h"
#include "Teuchos_RefCountPtr.hpp"

class Epetra_Comm;
class Epetra_CrsGraph;


class Ifpack_Graph_Epetra_CrsGraph : public Ifpack_Graph {

public:
    
  Ifpack_Graph_Epetra_CrsGraph(const Teuchos::RefCountPtr<const Epetra_CrsGraph>& CrsGraph);

  virtual ~Ifpack_Graph_Epetra_CrsGraph() {};

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

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

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

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

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES

  int NumGlobalCols() const
  {
    if(CrsGraph_->ColMap().GlobalIndicesInt())
      return (int) (NumGlobalCols_);
    else
      throw "Ifpack_Graph_Epetra_CrsGraph::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;
  
  virtual ostream& Print(std::ostream& os) const;

private:

  int NumMyRows_;
  int NumMyCols_;
  long long NumGlobalRows_;
  long long NumGlobalCols_;
  int MaxNumIndices_;
  Teuchos::RefCountPtr<const Epetra_CrsGraph> CrsGraph_;
};

#endif