ceph/src/boost/boost/geometry/formulas/unit_spheroid.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2017 Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   6
   7 // Use, modification and distribution is subject to the Boost Software License,
   8 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_GEOMETRY_FORMULAS_UNIT_SPHEROID_HPP
  12 #define BOOST_GEOMETRY_FORMULAS_UNIT_SPHEROID_HPP
  13
  14 #include <boost/geometry/core/radius.hpp>
  15
  16 namespace boost { namespace geometry
  17 {
  18
  19 #ifndef DOXYGEN_NO_DETAIL
  20 namespace formula
  21 {
  22
  23 template <typename ResultType, typename Spheroid>
  24 inline ResultType unit_spheroid_b(Spheroid const& spheroid)
  25 {
  26     return ResultType(get_radius<2>(spheroid))
  27          / ResultType(get_radius<0>(spheroid));
  28 }
  29
  30 template <typename ResultSpheroid, typename Spheroid>
  31 inline ResultSpheroid unit_spheroid(Spheroid const& spheroid)
  32 {
  33     typedef typename radius_type<ResultSpheroid>::type radius_t;
  34     return ResultSpheroid(radius_t(1),
  35                           unit_spheroid_b<radius_t>(spheroid));
  36 }
  37
  38 } // namespace formula
  39 #endif // DOXYGEN_NO_DETAIL
  40
  41 }} // namespace boost::geometry
  42
  43 #endif // BOOST_GEOMETRY_FORMULAS_UNIT_SPHEROID_HPP