hana/test/range/length.cpp
2017-01-07 14:14:18 -08:00

36 lines
1.1 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/assert.hpp>
#include <boost/hana/core/make.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/length.hpp>
#include <boost/hana/range.hpp>
namespace hana = boost::hana;
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::length(hana::make_range(hana::int_c<0>, hana::int_c<0>)),
hana::size_c<0>
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::length(hana::make_range(hana::int_c<0>, hana::int_c<1>)),
hana::size_c<1>
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::length(hana::make_range(hana::int_c<0>, hana::int_c<2>)),
hana::size_c<2>
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::length(hana::make_range(hana::int_c<4>, hana::int_c<4>)),
hana::size_c<0>
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::length(hana::make_range(hana::int_c<4>, hana::int_c<10>)),
hana::size_c<6>
));
}