transfer.hpp

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// Copyright (c) 2010-2025, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-806117.
//
// This file is part of the MFEM library. For more information and source code
// availability visit https://mfem.org.
//
// MFEM is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
 
#ifndef MFEM_TRANSFER_HPP
#define MFEM_TRANSFER_HPP
 
#include "../linalg/linalg.hpp"
#include "fespace.hpp"
 
#ifdef MFEM_USE_MPI
#include "pfespace.hpp"
#endif
 
namespace mfem
{
 
/** @brief Base class for transfer algorithms that construct transfer Operator%s
    between two finite element (FE) spaces. */
/** Generally, the two FE spaces (domain and range) can be defined on different
    meshes. */
class GridTransfer
{
protected:
   FiniteElementSpace &dom_fes; ///< Domain FE space