text: #ifndef BOOST_GEOMETRY_PROJECTIONS_PUTP6_HPP
  #define BOOST_GEOMETRY_PROJECTIONS_PUTP6_HPP
  
  // Boost.Geometry - extensions-gis-projections (based on PROJ4)
  // This file is automatically generated. DO NOT EDIT.
  
  // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
  
  // This file was modified by Oracle on 2017.
  // Modifications copyright (c) 2017, Oracle and/or its affiliates.
  // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
  
  // 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)
  
  // This file is converted from PROJ4, http://trac.osgeo.org/proj
  // PROJ4 is originally written by Gerald Evenden (then of the USGS)
  // PROJ4 is maintained by Frank Warmerdam
  // PROJ4 is converted to Boost.Geometry by Barend Gehrels
  
  // Last updated version of proj: 4.9.1
  
  // Original copyright notice:
  
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the "Software"),
  // to deal in the Software without restriction, including without limitation
  // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  // and/or sell copies of the Software, and to permit persons to whom the
  // Software is furnished to do so, subject to the following conditions:
  
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  
  #include <boost/core/ignore_unused.hpp>
  
  #include <boost/geometry/srs/projections/impl/base_static.hpp>
  #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
  #include <boost/geometry/srs/projections/impl/projects.hpp>
  #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
  #include <boost/geometry/srs/projections/impl/aasincos.hpp>
  
  namespace boost { namespace geometry
  {
  
  namespace srs { namespace par4
  {
      struct putp6 {};
      struct putp6p {};
  
  }} //namespace srs::par4
  
  namespace projections
  {
      #ifndef DOXYGEN_NO_DETAIL
      namespace detail { namespace putp6
      {
  
              static const double EPS = 1e-10;
              static const int NITER = 10;
              static const double CON_POLE = 1.732050807568877;
  
              template <typename T>
              struct par_putp6
              {
                  T C_x, C_y, A, B, D;
              };
  
              // template class, using CRTP to implement forward/inverse
              template <typename CalculationType, typename Parameters>
              struct base_putp6_spheroid : public base_t_fi<base_putp6_spheroid<CalculationType, Parameters>,
                       CalculationType, Parameters>
              {
  
                  typedef CalculationType geographic_type;
                  typedef CalculationType cartesian_type;
  
                  par_putp6<CalculationType> m_proj_parm;
  
                  inline base_putp6_spheroid(const Parameters& par)
                      : base_t_fi<base_putp6_spheroid<CalculationType, Parameters>,
                       CalculationType, Parameters>(*this, par) {}
  
                  // FORWARD(s_forward)  spheroid
                  // Project coordinates from geographic (lon, lat) to cartesian (x, y)
                  inline void fwd(geographic_type& lp_lon, geographic_type& lp_lat, cartesian_type& xy_x, cartesian_type& xy_y) const
                  {
                      CalculationType p, r, V;
                      int i;
  
                      p = this->m_proj_parm.B * sin(lp_lat);
                      lp_lat *=  1.10265779;
                      for (i = NITER; i ; --i) {
                          r = sqrt(1. + lp_lat * lp_lat);
                          lp_lat -= V = ( (this->m_proj_parm.A - r) * lp_lat - log(lp_lat + r) - p ) /
                              (this->m_proj_parm.A - 2. * r);
                          if (fabs(V) < EPS)
                              break;
                      }
                      if (!i)
                          lp_lat = p < 0. ? -CON_POLE : CON_POLE;
                      xy_x = this->m_proj_parm.C_x * lp_lon * (this->m_proj_parm.D - sqrt(1. + lp_lat * lp_lat));
                      xy_y = this->m_proj_parm.C_y * lp_lat;
                  }
  
                  // INVERSE(s_inverse)  spheroid
                  // Project coordinates from cartesian (x, y) to geographic (lon, lat)
                  inline void inv(cartesian_type& xy_x, cartesian_type& xy_y, geographic_type& lp_lon, geographic_type& lp_lat) const
                  {
                      CalculationType r;
  
                      lp_lat = xy_y / this->m_proj_parm.C_y;
                      r = sqrt(1. + lp_lat * lp_lat);
                      lp_lon = xy_x / (this->m_proj_parm.C_x * (this->m_proj_parm.D - r));
                      lp_lat = aasin(( (this->m_proj_parm.A - r) * lp_lat - log(lp_lat + r) ) / this->m_proj_parm.B);
                  }
  
                  static inline std::string get_name()
                  {
                      return "putp6_spheroid";
                  }
  
              };
  
              template <typename Parameters, typename T>
              inline void setup(Parameters& par, par_putp6<T>& proj_parm) 
              {
                  boost::ignore_unused(proj_parm);
                  par.es = 0.;
              }
  
  
              // Putnins P6
              template <typename Parameters, typename T>
              inline void setup_putp6(Parameters& par, par_putp6<T>& proj_parm)
              {
                  proj_parm.C_x = 1.01346;
                  proj_parm.C_y = 0.91910;
                  proj_parm.A   = 4.;
                  proj_parm.B   = 2.1471437182129378784;
                  proj_parm.D   = 2.;
                  setup(par, proj_parm);
              }
  
              // Putnins P6'
              template <typename Parameters, typename T>
              inline void setup_putp6p(Parameters& par, par_putp6<T>& proj_parm)
              {
                  proj_parm.C_x = 0.44329;
                  proj_parm.C_y = 0.80404;
                  proj_parm.A   = 6.;
                  proj_parm.B   = 5.61125;
                  proj_parm.D   = 3.;
                  setup(par, proj_parm);
              }
  
      }} // namespace detail::putp6
      #endif // doxygen
  
      /*!
          \brief Putnins P6 projection
          \ingroup projections
          \tparam Geographic latlong point type
          \tparam Cartesian xy point type
          \tparam Parameters parameter type
          \par Projection characteristics
           - Pseudocylindrical
           - Spheroid
          \par Example
          \image html ex_putp6.gif
      */
      template <typename CalculationType, typename Parameters>
      struct putp6_spheroid : public detail::putp6::base_putp6_spheroid<CalculationType, Parameters>
      {
          inline putp6_spheroid(const Parameters& par) : detail::putp6::base_putp6_spheroid<CalculationType, Parameters>(par)
          {
              detail::putp6::setup_putp6(this->m_par, this->m_proj_parm);
          }
      };
  
      /*!
          \brief Putnins P6' projection
          \ingroup projections
          \tparam Geographic latlong point type
          \tparam Cartesian xy point type
          \tparam Parameters parameter type
          \par Projection characteristics
           - Pseudocylindrical
           - Spheroid
          \par Example
          \image html ex_putp6p.gif
      */
      template <typename CalculationType, typename Parameters>
      struct putp6p_spheroid : public detail::putp6::base_putp6_spheroid<CalculationType, Parameters>
      {
          inline putp6p_spheroid(const Parameters& par) : detail::putp6::base_putp6_spheroid<CalculationType, Parameters>(par)
          {
              detail::putp6::setup_putp6p(this->m_par, this->m_proj_parm);
          }
      };
  
      #ifndef DOXYGEN_NO_DETAIL
      namespace detail
      {
  
          // Static projection
          BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::putp6, putp6_spheroid, putp6_spheroid)
          BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::putp6p, putp6p_spheroid, putp6p_spheroid)
  
          // Factory entry(s)
          template <typename CalculationType, typename Parameters>
          class putp6_entry : public detail::factory_entry<CalculationType, Parameters>
          {
              public :
                  virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
                  {
                      return new base_v_fi<putp6_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
                  }
          };
  
          template <typename CalculationType, typename Parameters>
          class putp6p_entry : public detail::factory_entry<CalculationType, Parameters>
          {
              public :
                  virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
                  {
                      return new base_v_fi<putp6p_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
                  }
          };
  
          template <typename CalculationType, typename Parameters>
          inline void putp6_init(detail::base_factory<CalculationType, Parameters>& factory)
          {
              factory.add_to_factory("putp6", new putp6_entry<CalculationType, Parameters>);
              factory.add_to_factory("putp6p", new putp6p_entry<CalculationType, Parameters>);
          }
  
      } // namespace detail
      #endif // doxygen
  
  } // namespace projections
  
  }} // namespace boost::geometry
  
  #endif // BOOST_GEOMETRY_PROJECTIONS_PUTP6_HPP
  
  