petsc_full_matrix.h

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// -----------------------------------------------------------------------------
//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception OR LGPL-2.1-or-later
// Copyright (C) 2004 - 2026 by the deal.II authors
//
// This file is part of the deal.II library.
//
// Detailed license information governing the source code and contributions
// can be found in LICENSE.md and CONTRIBUTING.md at the top level directory.
//
// -----------------------------------------------------------------------------
 
#ifndef dealii_petsc_full_matrix_h
#define dealii_petsc_full_matrix_h
 
 
#include <deal.II/base/config.h>
 
#ifdef DEAL_II_WITH_PETSC
 
#  include <deal.II/lac/exceptions.h>
#  include <deal.II/lac/petsc_matrix_base.h>
 
#endif // DEAL_II_WITH_PETSC
 
DEAL_II_NAMESPACE_OPEN
 
#ifdef DEAL_II_WITH_PETSC
namespace PETScWrappers
{
  class FullMatrix : public MatrixBase
  {
  public:
    using size_type = types::global_dof_index;
 
 
    FullMatrix();
 
 
    FullMatrix(const size_type m, const size_type n);
 
 
    void
    reinit(const size_type m, const size_type n);
 
    FullMatrix &
    operator=(const value_type d);
 
 
  private:
    void
    do_reinit(const size_type m, const size_type n);
  };
 
  namespace MPI
  {
    class FullMatrix : public MatrixBase
    {
    public:
      using size_type = types::global_dof_index;
 
 
      FullMatrix();
 
      /* Initialize with communication
       * happening over the provided @p communicator.
       * For the meaning of the @p local_rows_per_process and @p
       * local_columns_per_process parameters, see the class documentation. */
      FullMatrix(const MPI_Comm  communicator,
                 const size_type m,
                 const size_type n,
                 const size_type local_rows_per_process,
                 const size_type local_columns_per_process);
 
      explicit FullMatrix(const Mat &);
 
      ~FullMatrix() override;
 
      FullMatrix &
      operator=(const value_type d);
 
      void
      reinit(const MPI_Comm  communicator,
             const size_type m,
             const size_type n,
             const size_type local_rows_per_process,
             const size_type local_columns_per_process);
 
    private:
      void
      do_reinit(const MPI_Comm  communicator,
                const size_type m,
                const size_type n,
                const size_type local_rows_per_process,
                const size_type local_columns_per_process);
    };
  } // namespace MPI
 
 
} // namespace PETScWrappers
 
#endif // DEAL_II_WITH_PETSC
 
DEAL_II_NAMESPACE_CLOSE
 
#endif