Reference documentation for deal.II version 9.5.0
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tuple.h
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1// ---------------------------------------------------------------------
2//
3// Copyright (C) 2019 - 2020 by the deal.II authors
4//
5// This file is part of the deal.II library.
6//
7// The deal.II library is free software; you can use it, redistribute
8// it, and/or modify it under the terms of the GNU Lesser General
9// Public License as published by the Free Software Foundation; either
10// version 2.1 of the License, or (at your option) any later version.
11// The full text of the license can be found in the file LICENSE.md at
12// the top level directory of deal.II.
13//
14// ---------------------------------------------------------------------
15#ifndef dealii_cxx17_tuple_h
16#define dealii_cxx17_tuple_h
17
18#include <deal.II/base/config.h>
19
20#include <tuple>
21
23namespace std_cxx17
24{
25#ifndef DEAL_II_HAVE_CXX17
26 template <typename F, typename Tuple, size_t... S>
27 auto
28 apply_impl(F &&fn, Tuple &&t, std::index_sequence<S...>)
29 -> decltype(std::forward<F>(fn)(std::get<S>(std::forward<Tuple>(t))...))
30 {
31 return std::forward<F>(fn)(std::get<S>(std::forward<Tuple>(t))...);
32 }
33
34 template <typename F, typename Tuple>
35 auto
36 apply(F &&fn, Tuple &&t) -> decltype(apply_impl(
37 std::forward<F>(fn),
38 std::forward<Tuple>(t),
39 std::make_index_sequence<
40 std::tuple_size<typename std::remove_reference<Tuple>::type>::value>()))
41 {
42 std::size_t constexpr tSize =
43 std::tuple_size<typename std::remove_reference<Tuple>::type>::value;
44 return apply_impl(std::forward<F>(fn),
45 std::forward<Tuple>(t),
46 std::make_index_sequence<tSize>());
47 }
48#else
49 using std::apply;
50#endif
51} // namespace std_cxx17
53
54#endif
#define DEAL_II_NAMESPACE_OPEN
Definition config.h:472
#define DEAL_II_NAMESPACE_CLOSE
Definition config.h:473
void apply(const Kokkos::TeamPolicy< MemorySpace::Default::kokkos_space::execution_space >::member_type &team_member, const Kokkos::View< Number *, MemorySpace::Default::kokkos_space > shape_data, const ViewTypeIn in, ViewTypeOut out)
Tensor< 2, dim, Number > F(const Tensor< 2, dim, Number > &Grad_u)