libstdc++-v3/testsuite/20_util/logical_traits/requirements/typedefs.cc

   1 //
   2 // Copyright (C) 2015-2024 Free Software Foundation, Inc.
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 3, or (at your option)
   8 // any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING3.  If not see
  17 // <http://www.gnu.org/licenses/>.
  18
  19 //
  20 // NB: This file is for testing type_traits with NO OTHER INCLUDES.
  21
  22 #include <type_traits>
  23
  24 // { dg-do compile { target c++17 } }
  25
  26 void test01()
  27 {
  28   // Check for required typedefs
  29   typedef std::conjunction<std::true_type, std::true_type>      test_type;
  30   typedef test_type::value_type               value_type;
  31   typedef test_type::type                     type;
  32   typedef test_type::type::value_type         type_value_type;
  33   typedef test_type::type::type               type_type;
  34 }
  35
  36 void test02()
  37 {
  38   // Check for required typedefs
  39   typedef std::disjunction<std::false_type, std::true_type>      test_type;
  40   typedef test_type::value_type               value_type;
  41   typedef test_type::type                     type;
  42   typedef test_type::type::value_type         type_value_type;
  43   typedef test_type::type::type               type_type;
  44 }
  45
  46 void test03()
  47 {
  48   // Check for required typedefs
  49   typedef std::negation<std::false_type>      test_type;
  50   typedef test_type::value_type               value_type;
  51   typedef test_type::type                     type;
  52   typedef test_type::type::value_type         type_value_type;
  53   typedef test_type::type::type               type_type;
  54 }