ceph/src/boost/libs/hana/test/range/length.cpp

   1 // Copyright Louis Dionne 2013-2016
   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/core/make.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/integral_constant.hpp>
   9 #include <boost/hana/length.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::length(hana::make_range(hana::int_c<0>, hana::int_c<0>)),
  17         hana::size_c<0>
  18     ));
  19     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  20         hana::length(hana::make_range(hana::int_c<0>, hana::int_c<1>)),
  21         hana::size_c<1>
  22     ));
  23     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24         hana::length(hana::make_range(hana::int_c<0>, hana::int_c<2>)),
  25         hana::size_c<2>
  26     ));
  27     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  28         hana::length(hana::make_range(hana::int_c<4>, hana::int_c<4>)),
  29         hana::size_c<0>
  30     ));
  31     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  32         hana::length(hana::make_range(hana::int_c<4>, hana::int_c<10>)),
  33         hana::size_c<6>
  34     ));
  35 }