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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 |