libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs-1.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   4 //
   5 // Copyright (C) 2007-2021 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <type_traits>
  23
  24 enum test_enum { first_selection };
  25
  26 void test01()
  27 {
  28   using std::make_unsigned;
  29   using std::is_same;
  30   using std::is_unsigned;
  31   using std::is_volatile;
  32
  33   // Positive tests.
  34   typedef make_unsigned<const unsigned int>::type       test2_type;
  35   static_assert(is_same<test2_type, const unsigned int>::value, "");
  36
  37   typedef make_unsigned<const signed int>::type         test21c_type;
  38   static_assert(is_same<test21c_type, const unsigned int>::value, "");
  39
  40   typedef make_unsigned<volatile signed int>::type      test21v_type;
  41   static_assert(is_same<test21v_type, volatile unsigned int>::value, "");
  42
  43   typedef make_unsigned<const volatile signed int>::type        test21cv_type;
  44   static_assert(is_same<test21cv_type,
  45                 const volatile unsigned int>::value, "");
  46
  47   typedef make_unsigned<const char>::type       test22_type;
  48   static_assert(is_same<test22_type, const unsigned char>::value, "");
  49
  50 #ifdef _GLIBCXX_USE_WCHAR_T
  51   typedef make_unsigned<volatile wchar_t>::type         test23_type;
  52   static_assert(is_unsigned<test23_type>::value
  53                 && is_volatile<test23_type>::value
  54                 && sizeof(test23_type) == sizeof(volatile wchar_t), "");
  55 #endif
  56
  57   // Chapter 48, chapter 20. Smallest rank such that new unsigned type
  58   // same size.
  59   typedef make_unsigned<test_enum>::type         test24_type;
  60   static_assert(is_unsigned<test24_type>::value, "");
  61   static_assert(sizeof(test24_type) == sizeof(test_enum), "");
  62
  63 #ifndef __STRICT_ANSI__
  64   // GNU Extensions.
  65 #ifdef _GLIBCXX_USE_INT128
  66   typedef make_unsigned<unsigned __int128>::type test25_type;
  67   static_assert(is_same<test25_type, unsigned __int128>::value, "");
  68
  69   typedef make_unsigned<__int128>::type          test26_type;
  70   static_assert(is_same<test26_type, unsigned __int128>::value, "");
  71 #endif
  72 #endif
  73 }