ceph/src/boost/libs/geometry/include/boost/geometry/util/coordinate_cast.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
   6
   7 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
   8 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
   9
  10 // Use, modification and distribution is subject to the Boost Software License,
  11 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  12 // http://www.boost.org/LICENSE_1_0.txt)
  13
  14 #ifndef BOOST_GEOMETRY_UTIL_COORDINATE_CAST_HPP
  15 #define BOOST_GEOMETRY_UTIL_COORDINATE_CAST_HPP
  16
  17 #include <cstdlib>
  18 #include <string>
  19 #include <boost/lexical_cast.hpp>
  20
  21 namespace boost { namespace geometry
  22 {
  23
  24 #ifndef DOXYGEN_NO_DETAIL
  25 namespace detail
  26 {
  27
  28 /*!
  29 \brief cast coordinates from a string to a coordinate type
  30 \detail By default it uses lexical_cast. However, lexical_cast seems not to support
  31     ttmath / partial specializations. Therefore this small utility is added.
  32     See also "define_pi" where the same issue is solved
  33 */
  34 template <typename CoordinateType>
  35 struct coordinate_cast
  36 {
  37     static inline CoordinateType apply(std::string const& source)
  38     {
  39 #if defined(BOOST_GEOMETRY_NO_LEXICAL_CAST)
  40         return atof(source.c_str());
  41 #else
  42         return boost::lexical_cast<CoordinateType>(source);
  43 #endif
  44     }
  45 };
  46
  47
  48 } // namespace detail
  49 #endif
  50
  51
  52
  53 }} // namespace boost::geometry
  54
  55 #endif // BOOST_GEOMETRY_UTIL_COORDINATE_CAST_HPP