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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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/equal.hpp> | |
7 | #include <boost/hana/greater.hpp> | |
8 | #include <boost/hana/integral_constant.hpp> | |
9 | #include <boost/hana/maximum.hpp> | |
10 | #include <boost/hana/tuple.hpp> | |
11 | namespace hana = boost::hana; | |
12 | ||
13 | ||
14 | int main() { | |
15 | // without a predicate | |
16 | BOOST_HANA_CONSTANT_CHECK( | |
17 | hana::maximum(hana::tuple_c<int, -1, 0, 2, -4, 6, 9>) == hana::int_c<9> | |
18 | ); | |
19 | ||
20 | // with a predicate | |
21 | auto smallest = hana::maximum(hana::tuple_c<int, -1, 0, 2, -4, 6, 9>, [](auto x, auto y) { | |
22 | return x > y; // order is reversed! | |
23 | }); | |
24 | BOOST_HANA_CONSTANT_CHECK(smallest == hana::int_c<-4>); | |
25 | } |