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

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-do compile }
   3
   4 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   5 //
   6 // Copyright (C) 2007-2016 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #include <type_traits>
  24
  25 enum test_enum { first_selection };
  26
  27 void test01()
  28 {
  29   using std::make_unsigned;
  30   using std::is_same;
  31   using std::is_unsigned;
  32   using std::is_volatile;
  33
  34   // Positive tests.
  35   typedef make_unsigned<const unsigned int>::type       test2_type;
  36   static_assert(is_same<test2_type, const unsigned int>::value, "");
  37
  38   typedef make_unsigned<const signed int>::type         test21c_type;
  39   static_assert(is_same<test21c_type, const unsigned int>::value, "");
  40
  41   typedef make_unsigned<volatile signed int>::type      test21v_type;
  42   static_assert(is_same<test21v_type, volatile unsigned int>::value, "");
  43
  44   typedef make_unsigned<const volatile signed int>::type        test21cv_type;
  45   static_assert(is_same<test21cv_type,
  46                 const volatile unsigned int>::value, "");
  47
  48   typedef make_unsigned<const char>::type       test22_type;
  49   static_assert(is_same<test22_type, const unsigned char>::value, "");
  50
  51 #ifdef _GLIBCXX_USE_WCHAR_T
  52   typedef make_unsigned<volatile wchar_t>::type         test23_type;
  53   static_assert(is_unsigned<test23_type>::value
  54                 && is_volatile<test23_type>::value
  55                 && sizeof(test23_type) == sizeof(volatile wchar_t), "");
  56 #endif
  57
  58   // Chapter 48, chapter 20. Smallest rank such that new unsigned type
  59   // same size.
  60   typedef make_unsigned<test_enum>::type         test24_type;
  61   static_assert(is_unsigned<test24_type>::value, "");
  62   static_assert(sizeof(test24_type) == sizeof(test_enum), "");
  63
  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 }