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TpetraExt_BlockExtraction_decl.hpp
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00002 // ************************************************************************
00003 // 
00004 //               Tpetra: Templated Linear Algebra Services Package 
00005 //                 Copyright (2008) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
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00028 
00029 #ifndef TPETRAEXT_BLOCKEXTRACTION_DECL_HPP
00030 #define TPETRAEXT_BLOCKEXTRACTION_DECL_HPP
00031 
00032 #include "Tpetra_ConfigDefs.hpp"
00033 #include "Tpetra_RowMatrix.hpp"
00034 #include "Tpetra_BlockMap.hpp"
00035 
00041 namespace Tpetra {
00042   namespace Ext {
00043 
00062     template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
00063     void
00064     extractBlockDiagonals(const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> &matrix, 
00065                           const Teuchos::ArrayView<const LocalOrdinal> &first_points,
00066                           Teuchos::ArrayRCP<Scalar>       &out_diags,
00067                           Teuchos::ArrayRCP<LocalOrdinal> &out_offsets);
00068 
00088     template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
00089     void
00090     extractBlockDiagonals(const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> &matrix, 
00091                           const Tpetra::BlockMap<LocalOrdinal,GlobalOrdinal,Node>         &block_map,
00092                           Teuchos::ArrayRCP<Scalar>       &out_diags,
00093                           Teuchos::ArrayRCP<LocalOrdinal> &out_offsets);
00094 
00114     template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
00115     void
00116     extractBlockRow(LocalOrdinal localBlockRow,
00117                     const RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> &matrix, 
00118                     const BlockMap<LocalOrdinal,GlobalOrdinal,Node> &block_row_map,
00119                     const BlockMap<LocalOrdinal,GlobalOrdinal,Node> &block_col_map,
00120                     ArrayRCP<ArrayRCP<Scalar> >      &out_block_entries,
00121                     ArrayRCP<LocalOrdinal>           &out_block_indices);
00122 
00123   }
00124 }
00125 
00131 #endif // TPETRAEXT_BLOCKEXTRACTION_DECL_HPP
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