ceph/src/boost/libs/hana/test/range/back.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/back.hpp>
   7 #include <boost/hana/core/make.hpp>
   8 #include <boost/hana/equal.hpp>
   9 #include <boost/hana/integral_constant.hpp>
  10 #include <boost/hana/range.hpp>
  11 namespace hana = boost::hana;
  12
  13
  14 int main() {
  15     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  16         hana::back(hana::make_range(hana::int_c<0>, hana::int_c<1>)),
  17         hana::int_c<0>
  18     ));
  19     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  20         hana::back(hana::make_range(hana::int_c<0>, hana::int_c<2>)),
  21         hana::int_c<1>
  22     ));
  23     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24         hana::back(hana::make_range(hana::int_c<0>, hana::int_c<3>)),
  25         hana::int_c<2>
  26     ));
  27     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  28         hana::back(hana::make_range(hana::int_c<3>, hana::int_c<6>)),
  29         hana::int_c<5>
  30     ));
  31 }