ceph/src/boost/libs/hana/example/ext/std/integral_constant.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/ext/std/integral_constant.hpp>
   8 #include <boost/hana/integral_constant.hpp>
   9 #include <boost/hana/not_equal.hpp>
  10
  11 #include <type_traits>
  12 namespace hana = boost::hana;
  13
  14
  15 static_assert(hana::value(std::integral_constant<int, 3>{}) == 3, "");
  16 static_assert(std::integral_constant<int, 3>::value == 3, "");
  17
  18 BOOST_HANA_CONSTANT_CHECK(hana::equal(std::integral_constant<int, 3>{}, hana::int_c<3>));
  19 BOOST_HANA_CONSTANT_CHECK(hana::equal(std::integral_constant<int, 3>{}, hana::long_c<3>));
  20 BOOST_HANA_CONSTANT_CHECK(hana::not_equal(std::integral_constant<int, 3>{}, hana::int_c<0>));
  21
  22 int main() { }