Reference documentation for deal.II version Git eab6000ff4 2020-05-30 14:50:38 -0400
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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 //
7 // The deal.II library is free software; you can use it, redistribute
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 
48 template <typename number>
49 class SparseMIC : public SparseLUDecomposition<number>
50 {
51 public:
56 
61  SparseMIC();
62 
66  virtual ~SparseMIC() override;
67 
72  virtual void
73  clear() override;
74 
80 
98  template <typename somenumber>
99  void
101  const AdditionalData & parameters = AdditionalData());
102 
109  template <typename somenumber>
110  void
111  vmult(Vector<somenumber> &dst, const Vector<somenumber> &src) const;
112 
122  template <typename somenumber>
123  void
124  Tvmult(Vector<somenumber> &dst, const Vector<somenumber> &src) const;
125 
130  std::size_t
131  memory_consumption() const override;
132 
146  double,
147  << "The strengthening parameter " << arg1
148  << " is not greater or equal than zero!");
153  int,
154  double,
155  << "The diagonal element (" << arg1 << "," << arg1 << ") is "
156  << arg2 << ", but must be positive");
157 
159 private:
163  std::vector<number> diag;
164 
168  std::vector<number> inv_diag;
169 
174  std::vector<number> inner_sums;
175 
179  number
180  get_rowsum(const size_type row) const;
181 };
182 
186 
187 #endif // dealii_
#define DeclException2(Exception2, type1, type2, outsequence)
Definition: exceptions.h:541
std::vector< number > inner_sums
Definition: sparse_mic.h:174
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:163
number get_rowsum(const size_type row) const
#define DeclException1(Exception1, type1, outsequence)
Definition: exceptions.h:518
virtual ~SparseMIC() override
typename SparseMatrix< number >::size_type size_type
#define DeclException0(Exception0)
Definition: exceptions.h:473
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:361
std::vector< number > inv_diag
Definition: sparse_mic.h:168
unsigned int global_dof_index
Definition: types.h:76
std::size_t memory_consumption() const override
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:360
virtual void clear() override
static ::ExceptionBase & ExcInvalidStrengthening(double arg1)
typename SparseLUDecomposition< number >::AdditionalData AdditionalData
Definition: sparse_mic.h:79
static ::ExceptionBase & ExcStrengthenDiagonalTooSmall()