Reference documentation for deal.II version Git 11de1224af 2020-11-24 16:17:24 -0500
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sparse_mic.h
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2 //
3 // Copyright (C) 2002 - 2019 by the deal.II authors
4 //
5 // This file is part of the deal.II library.
6 //
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8 // it, and/or modify it under the terms of the GNU Lesser General
9 // Public License as published by the Free Software Foundation; either
10 // version 2.1 of the License, or (at your option) any later version.
11 // The full text of the license can be found in the file LICENSE.md at
12 // the top level directory of deal.II.
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14 // ---------------------------------------------------------------------
15 
16 #ifndef dealii_sparse_mic_h
17 #define dealii_sparse_mic_h
18 
19 #include <deal.II/base/config.h>
20 
23 
25 
44 template <typename number>
45 class SparseMIC : public SparseLUDecomposition<number>
46 {
47 public:
52 
57  SparseMIC();
58 
62  virtual ~SparseMIC() override;
63 
68  virtual void
69  clear() override;
70 
76 
94  template <typename somenumber>
95  void
97  const AdditionalData & parameters = AdditionalData());
98 
105  template <typename somenumber>
106  void
107  vmult(Vector<somenumber> &dst, const Vector<somenumber> &src) const;
108 
117  template <typename somenumber>
118  void
119  Tvmult(Vector<somenumber> &dst, const Vector<somenumber> &src) const;
120 
125  std::size_t
126  memory_consumption() const override;
127 
141  double,
142  << "The strengthening parameter " << arg1
143  << " is not greater or equal than zero!");
148  int,
149  double,
150  << "The diagonal element (" << arg1 << "," << arg1 << ") is "
151  << arg2 << ", but must be positive");
152 
154 private:
158  std::vector<number> diag;
159 
163  std::vector<number> inv_diag;
164 
169  std::vector<number> inner_sums;
170 
174  number
175  get_rowsum(const size_type row) const;
176 };
177 
181 
182 #endif // dealii_
#define DeclException2(Exception2, type1, type2, outsequence)
Definition: exceptions.h:538
std::vector< number > inner_sums
Definition: sparse_mic.h:169
Contents is actually a matrix.
void vmult(Vector< somenumber > &dst, const Vector< somenumber > &src) const
static ::ExceptionBase & ExcDecompositionNotStable(int arg1, double arg2)
void Tvmult(Vector< somenumber > &dst, const Vector< somenumber > &src) const
void initialize(const SparseMatrix< somenumber > &matrix, const AdditionalData &parameters=AdditionalData())
std::vector< number > diag
Definition: sparse_mic.h:158
number get_rowsum(const size_type row) const
#define DeclException1(Exception1, type1, outsequence)
Definition: exceptions.h:515
virtual ~SparseMIC() override
typename SparseMatrix< number >::size_type size_type
#define DeclException0(Exception0)
Definition: exceptions.h:470
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:372
std::vector< number > inv_diag
Definition: sparse_mic.h:163
unsigned int global_dof_index
Definition: types.h:76
std::size_t memory_consumption() const override
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:371
virtual void clear() override
static ::ExceptionBase & ExcInvalidStrengthening(double arg1)
typename SparseLUDecomposition< number >::AdditionalData AdditionalData
Definition: sparse_mic.h:75
static ::ExceptionBase & ExcStrengthenDiagonalTooSmall()