boost/geometry/core/reverse_dispatch.hpp
// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. // Copyright (c) 2024 Adam Wulkiewicz, Lodz, Poland. // This file was modified by Oracle on 2020. // Modifications copyright (c) 2020, Oracle and/or its affiliates. // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. // Use, modification and distribution is subject to 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) #ifndef BOOST_GEOMETRY_CORE_REVERSE_DISPATCH_HPP #define BOOST_GEOMETRY_CORE_REVERSE_DISPATCH_HPP #include <cstddef> #include <type_traits> #include <boost/geometry/core/geometry_id.hpp> namespace boost { namespace geometry { #ifndef DOXYGEN_NO_DETAIL namespace detail { // Different geometries: reverse_dispatch if second ID < first ID template <std::size_t GeometryId1, std::size_t GeometryId2> struct reverse_dispatch : std::integral_constant < bool, (GeometryId1 > GeometryId2) > {}; // Same geometry: never reverse_dispatch template <std::size_t GeometryId> struct reverse_dispatch<GeometryId, GeometryId> : std::false_type {}; } // namespace detail #endif // DOXYGEN_NO_DETAIL template <typename Geometry1, typename Geometry2> struct reverse_dispatch : detail::reverse_dispatch < geometry_id<Geometry1>::value, geometry_id<Geometry2>::value > {}; }} // namespace boost::geometry #endif // BOOST_GEOMETRY_CORE_REVERSE_DISPATCH_HPP