fourth_error_estimators.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can 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.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_FOURTH_ERROR_ESTIMATORS_H
#define LIBMESH_FOURTH_ERROR_ESTIMATORS_H

// Local Includes
#include "libmesh/jump_error_estimator.h"

// C++ includes
#include <vector>
#include <string>

namespace libMesh
{

class LaplacianErrorEstimator : public JumpErrorEstimator
{
public:

  LaplacianErrorEstimator();


  LaplacianErrorEstimator (const LaplacianErrorEstimator &) = delete;
  LaplacianErrorEstimator & operator= (const LaplacianErrorEstimator &) = delete;

  LaplacianErrorEstimator (LaplacianErrorEstimator &&) = default;
  LaplacianErrorEstimator & operator= (LaplacianErrorEstimator &&) = default;
  virtual ~LaplacianErrorEstimator() = default;

  virtual ErrorEstimatorType type() const override;

protected:

  virtual void init_context(FEMContext & c) override;

  virtual void internal_side_integration() override;
};


} // namespace libMesh

#endif // LIBMESH_FOURTH_ERROR_ESTIMATORS_H