libs/hana/test/ext/std/integral_constant/interop.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/ext/std/integral_constant.hpp>
   6
   7 #include <boost/hana/assert.hpp>
   8 #include <boost/hana/equal.hpp>
   9 #include <boost/hana/integral_constant.hpp>
  10 #include <boost/hana/not_equal.hpp>
  11
  12 #include <type_traits>
  13 namespace hana = boost::hana;
  14
  15
  16 int main() {
  17     // Interoperation with hana::integral_constant
  18     BOOST_HANA_CONSTANT_CHECK(std::integral_constant<int, 1>{} == hana::int_c<1>);
  19     BOOST_HANA_CONSTANT_CHECK(std::integral_constant<int, 1>{} == hana::long_c<1>);
  20
  21     BOOST_HANA_CONSTANT_CHECK(std::integral_constant<int, 2>{} != hana::int_c<3>);
  22 }