133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
/*@HEADER
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// ***********************************************************************
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//
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// Ifpack: Object-Oriented Algebraic Preconditioner Package
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// Copyright (2002) Sandia Corporation
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//
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// license for use of this work by or on behalf of the U.S. Government.
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
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//
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// ***********************************************************************
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//@HEADER
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*/
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#ifndef IFPACK_EPETRA_CRSGRAPH_H
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#define IFPACK_EPETRA_CRSGRAPH_H
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#include "Ifpack_ConfigDefs.h"
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#include "Ifpack_Graph.h"
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#include "Teuchos_RefCountPtr.hpp"
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class Epetra_Comm;
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class Epetra_CrsGraph;
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//! Ifpack_Graph_Epetra_CrsGraph: a class to define Ifpack_Graph as a light-weight conversion of Epetra_CrsGraph's.
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/*!
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Class Ifpack_Graph_Epetra_CrsGraph enables the construction of an
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Ifpack_Graph based on the input Epetra_CrsGraph. Note that data are
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not copied to \e this object; instead, wrappers are furnished.
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\date Set-04.
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*/
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class Ifpack_Graph_Epetra_CrsGraph : public Ifpack_Graph {
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public:
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//! Constructor.
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Ifpack_Graph_Epetra_CrsGraph(const Teuchos::RefCountPtr<const Epetra_CrsGraph>& CrsGraph);
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//! Destructor.
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virtual ~Ifpack_Graph_Epetra_CrsGraph() {};
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//! Returns the number of local rows.
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int NumMyRows() const
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{
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return(NumMyRows_);
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}
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//! Returns the number of local columns.
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int NumMyCols() const
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{
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return(NumMyCols_);
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}
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//! Returns the number of global rows.
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int NumGlobalRows() const
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{
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return(NumGlobalRows_);
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}
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//! Returns the number of global columns.
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int NumGlobalCols() const
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{
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return(NumGlobalCols_);
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}
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//! Returns the maximun number of entries for row.
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int MaxMyNumEntries() const
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{
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return(MaxNumIndices_);
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}
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//! Returns the number of local nonzero entries.
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int NumMyNonzeros() const;
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//! Returns \c true is graph is filled.
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bool Filled() const;
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//! Returns the global row ID of input local row.
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int GRID(int) const;
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//! Returns the global column ID of input local column.
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int GCID(int) const;
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//! Returns the local row ID of input global row.
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int LRID(int) const;
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//! Returns the local column ID of input global column.
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int LCID(int) const;
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//! Extracts a copy of input local row.
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int ExtractMyRowCopy(int GlobalRow, int LenOfIndices,
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int &NumIndices, int *Indices) const;
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//! Returns the communicator object of the graph.
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const Epetra_Comm& Comm() const;
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//! Prints basic information about the graph object.
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virtual ostream& Print(std::ostream& os) const;
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private:
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//! Number of local rows.
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int NumMyRows_;
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//! Number of local columns.
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int NumMyCols_;
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//! Number of global rows.
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int NumGlobalRows_;
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//! Number of global columns.
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int NumGlobalCols_;
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//! Maximum number of indices per row.
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int MaxNumIndices_;
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//! Pointer to the wrapped Epetra_CrsGraph.
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Teuchos::RefCountPtr<const Epetra_CrsGraph> CrsGraph_;
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};
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#endif
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