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diff --git a/boost/geometry/algorithms/detail/distance/is_comparable.hpp b/boost/geometry/algorithms/detail/distance/is_comparable.hpp
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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2014, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
+
+#ifndef BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_IS_COMPARABLE_HPP
+#define BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_IS_COMPARABLE_HPP
+
+#include <boost/type_traits/is_same.hpp>
+
+#include <boost/geometry/strategies/distance.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace distance
+{
+
+
+// metafunction to determine is a strategy is comparable or not
+template <typename Strategy>
+struct is_comparable
+    : boost::is_same
+        <
+            Strategy,
+            typename strategy::distance::services::comparable_type
+              <
+                  Strategy
+              >::type
+        >
+{};
+
+
+}} // namespace detail::distance
+#endif // DOXYGEN_NO_DETAIL
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_IS_COMPARABLE_HPP