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

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   4 //
   5 // Copyright (C) 2007, 2008 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 2, 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 COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 #include <type_traits>
  24 #include <testsuite_hooks.h>
  25
  26 enum test_enum { first_selection };
  27
  28 void test01()
  29 {
  30   bool test __attribute__((unused)) = true;
  31   using std::make_signed;
  32   using std::is_same;
  33   using std::is_signed;
  34
  35   // Positive tests.
  36   typedef make_signed<const int>::type          test2_type;
  37   VERIFY( (is_same<test2_type, const int>::value) );
  38
  39   typedef make_signed<const unsigned int>::type         test21c_type;
  40   VERIFY( (is_same<test21c_type, const signed int>::value) );
  41
  42   typedef make_signed<volatile unsigned int>::type      test21v_type;
  43   VERIFY( (is_same<test21v_type, volatile signed int>::value) );
  44
  45   typedef make_signed<const volatile unsigned int>::type        test21cv_type;
  46   VERIFY( (is_same<test21cv_type, const volatile signed int>::value) );
  47
  48   typedef make_signed<const char>::type         test22_type;
  49   VERIFY( (is_same<test22_type, const signed char>::value) );
  50
  51 #ifdef _GLIBCXX_USE_WCHAR_T
  52   typedef make_signed<volatile wchar_t>::type   test23_type;
  53   VERIFY( (is_same<test23_type, volatile signed wchar_t>::value) );
  54 #endif
  55
  56   // Chapter 48, chapter 20. Smallest rank such that new signed type same size.
  57   typedef make_signed<test_enum>::type          test25_type;
  58   VERIFY( is_signed<test25_type>::value );
  59   VERIFY( sizeof(test25_type) == sizeof(test_enum) );
  60 }
  61
  62 int main()
  63 {
  64   test01();
  65   return 0;
  66 }