// 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/product.hpp>
#include <boost/hana/range.hpp>
namespace hana = boost::hana;


int main() {
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<-3>)),
        hana::int_c<1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<-2>)),
        hana::int_c<-3>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<-1>)),
        hana::int_c<-3 * -2>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<0>)),
        hana::int_c<-3 * -2 * -1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<1>)),
        hana::int_c<-3 * -2 * -1 * 0>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<2>)),
        hana::int_c<-3 * -2 * -1 * 0 * 1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<-3>, hana::int_c<3>)),
        hana::int_c<-3 * -2 * -1 * 0 * 1 * 2>
    ));

    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<1>, hana::int_c<1>)),
        hana::int_c<1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<1>, hana::int_c<2>)),
        hana::int_c<1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<1>, hana::int_c<3>)),
        hana::int_c<1 * 2>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<1>, hana::int_c<4>)),
        hana::int_c<1 * 2 * 3>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<1>, hana::int_c<5>)),
        hana::int_c<1 * 2 * 3 * 4>
    ));

    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<3>, hana::int_c<3>)),
        hana::int_c<1>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<3>, hana::int_c<4>)),
        hana::int_c<3>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<3>, hana::int_c<5>)),
        hana::int_c<3 * 4>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<3>, hana::int_c<6>)),
        hana::int_c<3 * 4 * 5>
    ));
    BOOST_HANA_CONSTANT_CHECK(hana::equal(
        hana::product<>(hana::make_range(hana::int_c<3>, hana::int_c<7>)),
        hana::int_c<3 * 4 * 5 * 6>
    ));
}