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matrix_use_operators.h
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1/*
2 * Copyright (c) 2011-2012: G-CSC, Goethe University Frankfurt
3 * Author: Martin Rupp
4 *
5 * This file is part of UG4.
6 *
7 * UG4 is free software: you can redistribute it and/or modify it under the
8 * terms of the GNU Lesser General Public License version 3 (as published by the
9 * Free Software Foundation) with the following additional attribution
10 * requirements (according to LGPL/GPL v3 §7):
11 *
12 * (1) The following notice must be displayed in the Appropriate Legal Notices
13 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
14 *
15 * (2) The following notice must be displayed at a prominent place in the
16 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
17 *
18 * (3) The following bibliography is recommended for citation and must be
19 * preserved in all covered files:
20 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
21 * parallel geometric multigrid solver on hierarchically distributed grids.
22 * Computing and visualization in science 16, 4 (2013), 151-164"
23 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
24 * flexible software system for simulating pde based models on high performance
25 * computers. Computing and visualization in science 16, 4 (2013), 165-179"
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU Lesser General Public License for more details.
31 */
32
33
34// MATRIX_USE_OPERATORS: elementary types like double, float, or template operatored classes: use operators
36
37namespace ug{
38
39template<typename vector_t, typename matrix_t>
40struct mat_operations_class<vector_t, matrix_t, MATRIX_USE_OPERATORS>
41{
43 static inline bool MatMult(vector_t &dest, const number &beta1, const matrix_t &A1, const vector_t &w1)
44 {
45 dest = beta1 * A1 * w1;
46 return true;
47 }
48
50 static inline bool MatMultAdd(vector_t &dest,
51 const number &alpha1, const vector_t &v1,
52 const number &beta1, const matrix_t &A1, const vector_t &w1)
53 {
54 dest = alpha1*v1 + beta1 * A1 * w1;
55 return true;
56 }
57 static inline bool MatMultAdd(vector_t &dest,
58 const number &alpha1, const vector_t &v1,
59 const number &alpha2, const vector_t &v2,
60 const number &beta1, const matrix_t &A1, const vector_t &w1)
61 {
62 dest = alpha1*v1 + alpha2*v2 + beta1 * A1 * w1;
63 return true;
64 }
65 static inline bool MatMultAdd(vector_t &dest,
66 const number &beta1, const matrix_t &A1, const vector_t &w1,
67 const number &beta2, const matrix_t &A2, const vector_t &w2)
68 {
69 dest = beta1 * A1 * w1 + beta2 * A2 * w2;
70 return true;
71 }
72 static inline bool MatMultAdd(vector_t &dest,
73 const number &alpha1, const vector_t &v1,
74 const number &beta1, const matrix_t &A1, const vector_t &w1,
75 const number &beta2, const matrix_t &A2, const vector_t &w2)
76 {
77 dest = alpha1*v1 + beta1 * A1 * w1 + beta2 * A2 * w2;
78 return true;
79 }
80
82 static inline bool MatMultTransposed(vector_t &dest,
83 const number &beta1, const matrix_t &A1, const vector_t &w1)
84 {
85 dest = beta1 * A1 * w1;
86 return true;
87 }
88
90 static inline bool MatMultTransposedAdd(vector_t &dest,
91 const number &alpha1, const vector_t &v1,
92 const number &beta1, const matrix_t &A1, const vector_t &w1)
93 {
94 dest = alpha1*v1 + beta1 * A1 * w1;
95 return true;
96 }
97};
98
99}
double number
Definition types.h:124
the ug namespace
@ MATRIX_USE_OPERATORS
Definition matrix_algebra_types.h:70
static bool MatMultAdd(vector_t &dest, const number &alpha1, const vector_t &v1, const number &alpha2, const vector_t &v2, const number &beta1, const matrix_t &A1, const vector_t &w1)
Definition matrix_use_operators.h:57
static bool MatMultTransposedAdd(vector_t &dest, const number &alpha1, const vector_t &v1, const number &beta1, const matrix_t &A1, const vector_t &w1)
calculates dest = alpha1*v1 + beta1 * A1^T *w1;
Definition matrix_use_operators.h:90
static bool MatMultAdd(vector_t &dest, const number &alpha1, const vector_t &v1, const number &beta1, const matrix_t &A1, const vector_t &w1, const number &beta2, const matrix_t &A2, const vector_t &w2)
Definition matrix_use_operators.h:72
static bool MatMultAdd(vector_t &dest, const number &beta1, const matrix_t &A1, const vector_t &w1, const number &beta2, const matrix_t &A2, const vector_t &w2)
Definition matrix_use_operators.h:65
static bool MatMult(vector_t &dest, const number &beta1, const matrix_t &A1, const vector_t &w1)
calculates dest = beta1 * A1 *w1;
Definition matrix_use_operators.h:43
static bool MatMultTransposed(vector_t &dest, const number &beta1, const matrix_t &A1, const vector_t &w1)
calculates dest = beta1 * A1^T *w1;
Definition matrix_use_operators.h:82
static bool MatMultAdd(vector_t &dest, const number &alpha1, const vector_t &v1, const number &beta1, const matrix_t &A1, const vector_t &w1)
calculates dest = alpha1*v1 + beta1 * A1 *w1;
Definition matrix_use_operators.h:50
Definition matrix_algebra_types.h:75