libMesh
tensor_shell_matrix.C
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 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/tensor_shell_matrix.h"
22 
23 namespace libMesh
24 {
25 
26 template <typename T>
28  const NumericVector<T> & arg) const
29 {
30  dest = _v;
31  dest.scale(_w.dot(arg));
32 }
33 
34 
35 
36 template <typename T>
38  const NumericVector<T> & arg) const
39 {
40  dest.add(_w.dot(arg),_v);
41 }
42 
43 
44 
45 template <typename T>
47 {
48  dest.pointwise_mult(_v,_w);
49 }
50 
51 
52 
53 //------------------------------------------------------------------
54 // Explicit instantiations
55 template class TensorShellMatrix<Number>;
56 
57 } // namespace libMesh
Numeric vector.
Definition: dof_map.h:66
virtual void get_diagonal(NumericVector< T > &dest) const libmesh_override
Copies the diagonal part of the matrix into dest.
The libMesh namespace provides an interface to certain functionality in the library.
virtual void scale(const T factor)=0
Scale each element of the vector by the given factor.
Shell matrix that is given by a tensor product of two vectors, i.e.
virtual void vector_mult_add(NumericVector< T > &dest, const NumericVector< T > &arg) const libmesh_override
Multiplies the matrix with arg and adds the result to dest.
virtual void vector_mult(NumericVector< T > &dest, const NumericVector< T > &arg) const libmesh_override
Multiplies the matrix with arg and stores the result in dest.
virtual void pointwise_mult(const NumericVector< T > &vec1, const NumericVector< T > &vec2)=0
Computes (summation not implied) i.e.
virtual void add(const numeric_index_type i, const T value)=0
Adds value to each entry of the vector.