| // 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 |
