Chris@16: // Boost.Geometry (aka GGL, Generic Geometry Library)
Chris@16: 
Chris@16: // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
Chris@16: // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
Chris@16: // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
Chris@16: 
Chris@16: // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
Chris@16: // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
Chris@16: 
Chris@16: // Use, modification and distribution is subject to the Boost Software License,
Chris@16: // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_GEOMETRY_UTIL_PROMOTE_FLOATING_POINT_HPP
Chris@16: #define BOOST_GEOMETRY_UTIL_PROMOTE_FLOATING_POINT_HPP
Chris@16: 
Chris@16: 
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/type_traits.hpp>
Chris@16: 
Chris@16: 
Chris@16: namespace boost { namespace geometry
Chris@16: {
Chris@16: 
Chris@16: 
Chris@16: /*!
Chris@16:     \brief Meta-function converting, if necessary, to "a floating point" type
Chris@16:     \details
Chris@16:         - if input type is integer, type is double
Chris@16:         - else type is input type
Chris@16:     \ingroup utility
Chris@16:  */
Chris@16: 
Chris@16: template <typename T, typename PromoteIntegerTo = double>
Chris@16: struct promote_floating_point
Chris@16: {
Chris@16:     typedef typename
Chris@16:         boost::mpl::if_
Chris@16:         <
Chris@16:             boost::is_integral<T>,
Chris@16:             PromoteIntegerTo,
Chris@16:             T
Chris@16:         >::type type;
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: }} // namespace boost::geometry
Chris@16: 
Chris@16: 
Chris@16: #endif // BOOST_GEOMETRY_UTIL_PROMOTE_FLOATING_POINT_HPP