sunnonlinsol_wrapper.h

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// -----------------------------------------------------------------------------
//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception OR LGPL-2.1-or-later
// Copyright (C) 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_sundials_sunnonlinsol_wrapper_h
#define dealii_sundials_sunnonlinsol_wrapper_h
 
#include <deal.II/base/config.h>
 
#ifdef DEAL_II_WITH_SUNDIALS
 
#  include <deal.II/sundials/invocation_context.h>
#  include <deal.II/sundials/sundials_handle.h>
 
#  include <sundials/sundials_nonlinearsolver.h>
#  include <sundials/sundials_nvector.h>
 
#endif
 
DEAL_II_NAMESPACE_OPEN
 
#ifdef DEAL_II_WITH_SUNDIALS
namespace SUNDIALS
{
  namespace internal
  {
    struct SundialsNonlinearSolverTraits
    {
      using Handle = SUNNonlinearSolver;
 
      static void
      free(Handle solver)
      {
        SUNNonlinSolFree(solver);
      }
    };
 
    using SundialsNonlinearSolver =
      SundialsHandle<SundialsNonlinearSolverTraits>;
 
    SundialsNonlinearSolver
    make_fixed_point_nonlinear_solver(N_Vector y_template,
                                      int      anderson_acceleration_subspace,
                                      const InvocationContext &inv_ctx);
  } // namespace internal
} // namespace SUNDIALS
#endif
 
DEAL_II_NAMESPACE_CLOSE
#endif