1 files changed, 25 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/maximum.cpp b/src/boost/libs/hana/example/maximum.cpp
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+++ b/src/boost/libs/hana/example/maximum.cpp
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+// 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/equal.hpp>
+#include <boost/hana/greater.hpp>
+#include <boost/hana/integral_constant.hpp>
+#include <boost/hana/maximum.hpp>
+#include <boost/hana/tuple.hpp>
+namespace hana = boost::hana;
+
+
+int main() {
+    // without a predicate
+    BOOST_HANA_CONSTANT_CHECK(
+        hana::maximum(hana::tuple_c<int, -1, 0, 2, -4, 6, 9>) == hana::int_c<9>
+    );
+
+    // with a predicate
+    auto smallest = hana::maximum(hana::tuple_c<int, -1, 0, 2, -4, 6, 9>, [](auto x, auto y) {
+        return x > y; // order is reversed!
+    });
+    BOOST_HANA_CONSTANT_CHECK(smallest == hana::int_c<-4>);
+}