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Edit File: promote_floating_point.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. // 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_UTIL_PROMOTE_FLOATING_POINT_HPP #define BOOST_GEOMETRY_UTIL_PROMOTE_FLOATING_POINT_HPP #include <boost/mpl/if.hpp> #include <boost/type_traits/is_integral.hpp> namespace boost { namespace geometry { /*! \brief Meta-function converting, if necessary, to "a floating point" type \details - if input type is integer, type is double - else type is input type \ingroup utility */ template <typename T, typename PromoteIntegerTo = double> struct promote_floating_point { typedef typename boost::mpl::if_ < boost::is_integral<T>, PromoteIntegerTo, T >::type type; }; }} // namespace boost::geometry #endif // BOOST_GEOMETRY_UTIL_PROMOTE_FLOATING_POINT_HPP