From: Daniel Arndt Date: Thu, 9 May 2019 04:12:34 +0000 (-0400) Subject: Modernize step-52 X-Git-Tag: v9.1.0-rc1~103^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F8046%2Fhead;p=dealii.git Modernize step-52 --- diff --git a/examples/step-52/step-52.cc b/examples/step-52/step-52.cc index bd2a36a2e9..73b7864b11 100644 --- a/examples/step-52/step-52.cc +++ b/examples/step-52/step-52.cc @@ -120,14 +120,14 @@ namespace Step52 const double final_time); - unsigned int fe_degree; + const unsigned int fe_degree; - double diffusion_coefficient; - double absorption_cross_section; + const double diffusion_coefficient; + const double absorption_cross_section; Triangulation<2> triangulation; - FE_Q<2> fe; + const FE_Q<2> fe; DoFHandler<2> dof_handler; @@ -214,10 +214,7 @@ namespace Step52 std::vector local_dof_indices(dofs_per_cell); - DoFHandler<2>::active_cell_iterator cell = dof_handler.begin_active(), - endc = dof_handler.end(); - - for (; cell != endc; ++cell) + for (const auto &cell : dof_handler.active_cell_iterators()) { cell_matrix = 0.; cell_mass_matrix = 0.; @@ -310,10 +307,7 @@ namespace Step52 std::vector local_dof_indices(dofs_per_cell); - DoFHandler<2>::active_cell_iterator cell = dof_handler.begin_active(), - endc = dof_handler.end(); - - for (; cell != endc; ++cell) + for (const auto &cell : dof_handler.active_cell_iterators()) { cell_source = 0.; @@ -354,11 +348,10 @@ namespace Step52 // - compute $z=\left(M-\tau \frac{\partial f}{\partial y}\right)^{-1} tmp = // \left(M-\tau \frac{\partial f}{\partial y}\right)^{-1} My$ // - return z. - Vector Diffusion::id_minus_tau_J_inverse(const double time, + Vector Diffusion::id_minus_tau_J_inverse(const double /*time*/, const double tau, const Vector &y) { - (void)time; SparseDirectUMFPACK inverse_mass_minus_tau_Jacobian; mass_minus_tau_Jacobian.copy_from(mass_matrix); @@ -503,10 +496,9 @@ namespace Step52 for (unsigned int i = 0; i < n_time_steps; ++i) { time = explicit_runge_kutta.evolve_one_time_step( - std::bind(&Diffusion::evaluate_diffusion, - this, - std::placeholders::_1, - std::placeholders::_2), + [this](const double time, const Vector &y) { + return this->evaluate_diffusion(time, y); + }, time, time_step, solution); @@ -544,15 +536,12 @@ namespace Step52 for (unsigned int i = 0; i < n_time_steps; ++i) { time = implicit_runge_kutta.evolve_one_time_step( - std::bind(&Diffusion::evaluate_diffusion, - this, - std::placeholders::_1, - std::placeholders::_2), - std::bind(&Diffusion::id_minus_tau_J_inverse, - this, - std::placeholders::_1, - std::placeholders::_2, - std::placeholders::_3), + [this](const double time, const Vector &y) { + return this->evaluate_diffusion(time, y); + }, + [this](const double time, const double tau, const Vector &y) { + return this->id_minus_tau_J_inverse(time, tau, y); + }, time, time_step, solution); @@ -620,10 +609,9 @@ namespace Step52 time_step = final_time - time; time = embedded_explicit_runge_kutta.evolve_one_time_step( - std::bind(&Diffusion::evaluate_diffusion, - this, - std::placeholders::_1, - std::placeholders::_2), + [this](const double time, const Vector &y) { + return this->evaluate_diffusion(time, y); + }, time, time_step, solution); @@ -653,10 +641,7 @@ namespace Step52 GridGenerator::hyper_cube(triangulation, 0., 5.); triangulation.refine_global(4); - Triangulation<2>::active_cell_iterator cell = triangulation.begin_active(), - endc = triangulation.end(); - - for (; cell != endc; ++cell) + for (const auto &cell : triangulation.active_cell_iterators()) for (unsigned int f = 0; f < GeometryInfo<2>::faces_per_cell; ++f) if (cell->face(f)->at_boundary()) {