Reference documentation for deal.II version GIT 29f9da0a34 2023-12-07 10:00:01+00:00
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type_traits.h
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1 // ---------------------------------------------------------------------
2 //
3 // Copyright (C) 2023 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_cxx20_type_traits_h
16 #define dealii_cxx20_type_traits_h
17 
18 #include <deal.II/base/config.h>
19 
20 #ifdef DEAL_II_HAVE_CXX20
21 # include <type_traits>
22 #endif
23 
25 
26 namespace std_cxx20
27 {
28 #ifdef DEAL_II_HAVE_CXX20
29  using std::type_identity;
31 #else
89  template <typename T>
91  {
92  using type = T;
93  };
94 
95  template <class T>
97 
98 #endif
99 } // namespace std_cxx20
100 
102 
103 #endif
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:477
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:478
static const char T
Definition: c++.h:147
typename type_identity< T >::type type_identity_t
Definition: type_traits.h:96