matrix_tools.h

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// ---------------------------------------------------------------------
//
// Copyright (C) 1998 - 2023 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE.md at
// the top level directory of deal.II.
//
// ---------------------------------------------------------------------
 
#ifndef dealii_matrix_tools_h
#define dealii_matrix_tools_h
 
 
#include <deal.II/base/config.h>
 
#include <deal.II/base/exceptions.h>
#include <deal.II/base/function.h>
 
#include <deal.II/lac/affine_constraints.h>
 
#include <deal.II/numerics/matrix_creator.h>
 
#include <map>
 
#ifdef DEAL_II_WITH_PETSC
#  include <petscsys.h>
#endif
 
DEAL_II_NAMESPACE_OPEN
 
 
// forward declarations
#ifndef DOXYGEN
template <int dim>
class Quadrature;
 
 
template <typename number>
class Vector;
template <typename number>
class FullMatrix;
template <typename number>
class SparseMatrix;
 
template <typename number>
class BlockSparseMatrix;
template <typename Number>
class BlockVector;
 
template <int dim, int spacedim>
class Mapping;
template <int dim, int spacedim>
DEAL_II_CXX20_REQUIRES((concepts::is_valid_dim_spacedim<dim, spacedim>))
class DoFHandler;
 
namespace hp
{
  template <int>
  class QCollection;
  template <int, int>
  class MappingCollection;
} // namespace hp
 
 
#  ifdef DEAL_II_WITH_PETSC
namespace PETScWrappers
{
  class MatrixBase;
  class VectorBase;
  namespace MPI
  {
    class BlockSparseMatrix;
    class BlockVector;
  } // namespace MPI
} // namespace PETScWrappers
#  endif
 
#  ifdef DEAL_II_WITH_TRILINOS
namespace TrilinosWrappers
{
  class SparseMatrix;
  class BlockSparseMatrix;
  namespace MPI
  {
    class Vector;
    class BlockVector;
  } // namespace MPI
} // namespace TrilinosWrappers
#  endif
#endif
 
 
 
namespace MatrixTools
{
  using namespace MatrixCreator;
 
  template <typename number>
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, number> &boundary_values,
    SparseMatrix<number> &                           matrix,
    Vector<number> &                                 solution,
    Vector<number> &                                 right_hand_side,
    const bool                                       eliminate_columns = true);
 
  template <typename number>
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, number> &boundary_values,
    BlockSparseMatrix<number> &                      matrix,
    BlockVector<number> &                            solution,
    BlockVector<number> &                            right_hand_side,
    const bool                                       eliminate_columns = true);
 
#ifdef DEAL_II_WITH_PETSC
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, PetscScalar> &boundary_values,
    PETScWrappers::MatrixBase &                           matrix,
    PETScWrappers::VectorBase &                           solution,
    PETScWrappers::VectorBase &                           right_hand_side,
    const bool eliminate_columns = true);
 
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, PetscScalar> &boundary_values,
    PETScWrappers::MPI::BlockSparseMatrix &               matrix,
    PETScWrappers::MPI::BlockVector &                     solution,
    PETScWrappers::MPI::BlockVector &                     right_hand_side,
    const bool eliminate_columns = true);
 
#endif
 
#ifdef DEAL_II_WITH_TRILINOS
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, TrilinosScalar> &boundary_values,
    TrilinosWrappers::SparseMatrix &                         matrix,
    TrilinosWrappers::MPI::Vector &                          solution,
    TrilinosWrappers::MPI::Vector &                          right_hand_side,
    const bool eliminate_columns = true);
 
  void
  apply_boundary_values(
    const std::map<types::global_dof_index, TrilinosScalar> &boundary_values,
    TrilinosWrappers::BlockSparseMatrix &                    matrix,
    TrilinosWrappers::MPI::BlockVector &                     solution,
    TrilinosWrappers::MPI::BlockVector &                     right_hand_side,
    const bool eliminate_columns = true);
#endif
 
  template <typename number>
  void
  local_apply_boundary_values(
    const std::map<types::global_dof_index, number> &boundary_values,
    const std::vector<types::global_dof_index> &     local_dof_indices,
    FullMatrix<number> &                             local_matrix,
    Vector<number> &                                 local_rhs,
    const bool                                       eliminate_columns);
 
  DeclExceptionMsg(ExcBlocksDontMatch,
                   "You are providing a matrix whose subdivision into "
                   "blocks in either row or column direction does not use "
                   "the same blocks sizes as the solution vector or "
                   "right hand side vectors, respectively.");
} // namespace MatrixTools
 
 
 
DEAL_II_NAMESPACE_CLOSE
 
#endif