libMesh
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sparse_shell_matrix.C
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1// The libMesh Finite Element Library.
2// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3
4// This library is free software; you can redistribute it and/or
5// modify it under the terms of the GNU Lesser General Public
6// License as published by the Free Software Foundation; either
7// version 2.1 of the License, or (at your option) any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12// Lesser General Public License for more details.
13
14// You should have received a copy of the GNU Lesser General Public
15// License along with this library; if not, write to the Free Software
16// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
18
19
20// Local includes
21#include "libmesh/sparse_shell_matrix.h"
22
23namespace libMesh
24{
25
26template <typename T>
28 const NumericVector<T> & arg) const
29{
30 _m.vector_mult(dest,arg);
31}
32
33
34
35template <typename T>
37 const NumericVector<T> & arg) const
38{
39 _m.vector_mult_add(dest,arg);
40}
41
42
43
44//------------------------------------------------------------------
45// Explicit instantiations
46template class LIBMESH_EXPORT SparseShellMatrix<Number>;
47
48} // namespace libMesh
Provides a uniform interface to vector storage schemes for different linear algebra libraries.
This class allows to use any SparseMatrix object as a shell matrix.
virtual void vector_mult_add(NumericVector< T > &dest, const NumericVector< T > &arg) const override
Multiplies the matrix with arg and adds the result to dest.
virtual void vector_mult(NumericVector< T > &dest, const NumericVector< T > &arg) const override
Multiplies the matrix with arg and stores the result in dest.
The libMesh namespace provides an interface to certain functionality in the library.