Reference documentation for deal.II version GIT relicensing-31-gf283a0fc39 2024-02-29 06:50:02+00:00
\(\newcommand{\dealvcentcolon}{\mathrel{\mathop{:}}}\) \(\newcommand{\dealcoloneq}{\dealvcentcolon\mathrel{\mkern-1.2mu}=}\) \(\newcommand{\jump}[1]{\left[\!\left[ #1 \right]\!\right]}\) \(\newcommand{\average}[1]{\left\{\!\left\{ #1 \right\}\!\right\}}\)
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sparse_ilu.h
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1// ------------------------------------------------------------------------
2//
3// SPDX-License-Identifier: LGPL-2.1-or-later
4// Copyright (C) 1999 - 2023 by the deal.II authors
5//
6// This file is part of the deal.II library.
7//
8// Part of the source code is dual licensed under Apache-2.0 WITH
9// LLVM-exception OR LGPL-2.1-or-later. Detailed license information
10// governing the source code and code contributions can be found in
11// LICENSE.md and CONTRIBUTING.md at the top level directory of deal.II.
12//
13// ------------------------------------------------------------------------
14
15
16#ifndef dealii_sparse_ilu_h
17#define dealii_sparse_ilu_h
18
19
20#include <deal.II/base/config.h>
21
25
27
58template <typename number>
59class SparseILU : public SparseLUDecomposition<number>
60{
61public:
66
73 SparseILU() = default;
74
80
98 template <typename somenumber>
99 void
101 const AdditionalData &parameters = AdditionalData());
102
109 template <typename somenumber>
110 void
112
113
120 template <typename somenumber>
121 void
123
124
129 std::size_t
130 memory_consumption() const override;
131
141 double,
142 << "The strengthening parameter " << arg1
143 << " is not greater or equal than zero!");
148 size_type,
149 << "While computing the ILU decomposition, the algorithm "
150 "found a zero pivot on the diagonal of row "
151 << arg1
152 << ". This must stop the ILU algorithm because it means "
153 "that the matrix for which you try to compute a "
154 "decomposition is singular.");
156};
157
159//---------------------------------------------------------------------------
160
161
163
164#endif // dealii_sparse_ilu_h
void Tvmult(Vector< somenumber > &dst, const Vector< somenumber > &src) const
typename SparseLUDecomposition< number >::size_type size_type
Definition sparse_ilu.h:65
void vmult(Vector< somenumber > &dst, const Vector< somenumber > &src) const
std::size_t memory_consumption() const override
typename SparseLUDecomposition< number >::AdditionalData AdditionalData
Definition sparse_ilu.h:79
void initialize(const SparseMatrix< somenumber > &matrix, const AdditionalData &parameters=AdditionalData())
SparseILU()=default
typename SparseMatrix< number >::size_type size_type
#define DEAL_II_NAMESPACE_OPEN
Definition config.h:502
#define DEAL_II_NAMESPACE_CLOSE
Definition config.h:503
static ::ExceptionBase & ExcInvalidStrengthening(double arg1)
static ::ExceptionBase & ExcZeroPivot(size_type arg1)
#define DeclException1(Exception1, type1, outsequence)
Definition exceptions.h:516