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/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/range.hpp>
10 #include <boost/hana/sum.hpp>
11 namespace hana = boost::hana;
12 
13 
main()14 int main() {
15     BOOST_HANA_CONSTANT_CHECK(hana::equal(
16         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<-3>)),
17         hana::int_c<0>
18     ));
19     BOOST_HANA_CONSTANT_CHECK(hana::equal(
20         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<-2>)),
21         hana::int_c<-3>
22     ));
23     BOOST_HANA_CONSTANT_CHECK(hana::equal(
24         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<-1>)),
25         hana::int_c<-3 + -2>
26     ));
27     BOOST_HANA_CONSTANT_CHECK(hana::equal(
28         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<0>)),
29         hana::int_c<-3 + -2 + -1>
30     ));
31     BOOST_HANA_CONSTANT_CHECK(hana::equal(
32         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<1>)),
33         hana::int_c<-3 + -2 + -1 + 0>
34     ));
35     BOOST_HANA_CONSTANT_CHECK(hana::equal(
36         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<2>)),
37         hana::int_c<-3 + -2 + -1 + 0 + 1>
38     ));
39     BOOST_HANA_CONSTANT_CHECK(hana::equal(
40         hana::sum<>(hana::make_range(hana::int_c<-3>, hana::int_c<3>)),
41         hana::int_c<-3 + -2 + -1 + 0 + 1 + 2>
42     ));
43 
44     BOOST_HANA_CONSTANT_CHECK(hana::equal(
45         hana::sum<>(hana::make_range(hana::int_c<0>, hana::int_c<0>)),
46         hana::int_c<0>
47     ));
48     BOOST_HANA_CONSTANT_CHECK(hana::equal(
49         hana::sum<>(hana::make_range(hana::int_c<0>, hana::int_c<1>)),
50         hana::int_c<0>
51     ));
52     BOOST_HANA_CONSTANT_CHECK(hana::equal(
53         hana::sum<>(hana::make_range(hana::int_c<0>, hana::int_c<2>)),
54         hana::int_c<0 + 1>
55     ));
56     BOOST_HANA_CONSTANT_CHECK(hana::equal(
57         hana::sum<>(hana::make_range(hana::int_c<0>, hana::int_c<3>)),
58         hana::int_c<0 + 1 + 2>
59     ));
60     BOOST_HANA_CONSTANT_CHECK(hana::equal(
61         hana::sum<>(hana::make_range(hana::int_c<0>, hana::int_c<4>)),
62         hana::int_c<0 + 1 + 2 + 3>
63     ));
64 
65     BOOST_HANA_CONSTANT_CHECK(hana::equal(
66         hana::sum<>(hana::make_range(hana::int_c<3>, hana::int_c<3>)),
67         hana::int_c<0>
68     ));
69     BOOST_HANA_CONSTANT_CHECK(hana::equal(
70         hana::sum<>(hana::make_range(hana::int_c<3>, hana::int_c<4>)),
71         hana::int_c<3>
72     ));
73     BOOST_HANA_CONSTANT_CHECK(hana::equal(
74         hana::sum<>(hana::make_range(hana::int_c<3>, hana::int_c<5>)),
75         hana::int_c<3 + 4>
76     ));
77     BOOST_HANA_CONSTANT_CHECK(hana::equal(
78         hana::sum<>(hana::make_range(hana::int_c<3>, hana::int_c<6>)),
79         hana::int_c<3 + 4 + 5>
80     ));
81     BOOST_HANA_CONSTANT_CHECK(hana::equal(
82         hana::sum<>(hana::make_range(hana::int_c<3>, hana::int_c<7>)),
83         hana::int_c<3 + 4 + 5 + 6>
84     ));
85 }
86