hana/test/integral_constant/constant.cpp
2017-01-07 14:14:18 -08:00

39 lines
1.0 KiB
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/tuple.hpp>
#include <boost/hana/value.hpp>
#include <laws/constant.hpp>
namespace hana = boost::hana;
int main() {
// value
static_assert(hana::value(hana::integral_c<int, 0>) == 0, "");
static_assert(hana::value(hana::integral_c<int, 1>) == 1, "");
// laws
hana::test::TestConstant<hana::integral_constant_tag<int>>{
hana::make_tuple(
hana::int_c<-10>,
hana::int_c<-2>,
hana::int_c<0>,
hana::int_c<1>,
hana::int_c<3>,
hana::int_c<4>
),
hana::tuple_t<int, long, long long>
};
hana::test::TestConstant<hana::integral_constant_tag<bool>>{
hana::make_tuple(
hana::true_c, hana::false_c
),
hana::tuple_t<bool>
};
}