libstdc++-v3/testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc

   1 // Copyright (C) 2019-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile { target c++20 } }
  19
  20 #include <concepts>
  21
  22 // signed integer types
  23 static_assert( std::integral<signed char> );
  24 static_assert( std::integral<signed short> );
  25 static_assert( std::integral<signed int> );
  26 static_assert( std::integral<signed long> );
  27 static_assert( std::integral<signed long long> );
  28
  29 // unsigned integer types
  30 static_assert( std::integral<unsigned char> );
  31 static_assert( std::integral<unsigned short> );
  32 static_assert( std::integral<unsigned int> );
  33 static_assert( std::integral<unsigned long> );
  34 static_assert( std::integral<unsigned long long> );
  35
  36 // other integral types
  37 static_assert( std::integral<bool> );
  38 static_assert( std::integral<char> );
  39 static_assert( std::integral<char16_t> );
  40 static_assert( std::integral<char32_t> );
  41 static_assert( std::integral<wchar_t> );
  42 #ifdef _GLIBCXX_USE_CHAR8_T
  43 static_assert( std::integral<char8_t> );
  44 #endif
  45
  46 #ifdef __GLIBCXX_TYPE_INT_N_0
  47 static_assert( std::integral<signed __GLIBCXX_TYPE_INT_N_0> );
  48 static_assert( std::integral<unsigned __GLIBCXX_TYPE_INT_N_0> );
  49 #endif
  50
  51 static_assert( !std::integral<void> );
  52 static_assert( !std::integral<float> );
  53 static_assert( !std::integral<int*> );
  54 static_assert( !std::integral<int&> );
  55 static_assert( !std::integral<int&&> );
  56 static_assert( !std::integral<const int&> );
  57 static_assert( !std::integral<int[]> );
  58 static_assert( !std::integral<int[2]> );
  59 static_assert( !std::integral<int()> );
  60 static_assert( !std::integral<int(*)()> );
  61 static_assert( !std::integral<int(&)()> );
  62
  63 enum E { };
  64 static_assert( !std::integral<E> );
  65 enum class CE { };
  66 static_assert( !std::integral<CE> );
  67 struct A { };
  68 static_assert( !std::integral<A> );
  69 union B { };
  70 static_assert( !std::integral<B> );