Add mp_less, mp_min, mp_max

test/mp_max.cpp

@@ -0,0 +1,26 @@
+
+// Copyright 2017 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+
+#include <boost/mp11/function.hpp>
+#include <boost/mp11/integral.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <type_traits>
+
+int main()
+{
+    using boost::mp11::mp_max;
+    using boost::mp11::mp_int;
+    using boost::mp11::mp_size_t;
+
+    BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max<mp_int<1>>, mp_int<1>>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max<mp_int<2>, mp_int<1>, mp_int<2>, mp_int<3>>, mp_int<3>>));
+    BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max<mp_int<-1>, mp_size_t<1>, mp_int<-2>, mp_size_t<2>>, mp_size_t<2>>));
+
+    return boost::report_errors();
+}