ceph/src/boost/libs/hana/test/integral_constant/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/integral_constant.hpp>
   6 #include <boost/hana/tuple.hpp>
   7 #include <boost/hana/value.hpp>
   8
   9 #include <laws/constant.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 int main() {
  14     // value
  15     static_assert(hana::value(hana::integral_c<int, 0>) == 0, "");
  16     static_assert(hana::value(hana::integral_c<int, 1>) == 1, "");
  17
  18
  19     // laws
  20     hana::test::TestConstant<hana::integral_constant_tag<int>>{
  21         hana::make_tuple(
  22             hana::int_c<-10>,
  23             hana::int_c<-2>,
  24             hana::int_c<0>,
  25             hana::int_c<1>,
  26             hana::int_c<3>,
  27             hana::int_c<4>
  28         ),
  29         hana::tuple_t<int, long, long long>
  30     };
  31
  32     hana::test::TestConstant<hana::integral_constant_tag<bool>>{
  33         hana::make_tuple(
  34             hana::true_c, hana::false_c
  35         ),
  36         hana::tuple_t<bool>
  37     };
  38 }