.. _program_listing_file_src_navtk_navutils_gravity.hpp:

Program Listing for File gravity.hpp
====================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_navtk_navutils_gravity.hpp>` (``src/navtk/navutils/gravity.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   
   #include <navtk/tensors.hpp>
   
   namespace navtk {
   namespace navutils {
   
   enum class GravModels {
       TITTERTON,
       SCHWARTZ,
       SAVAGE
   };
   
   Vector3 calculate_gravity_titterton(double alt, double lat, double R0);
   
   Vector3 calculate_gravity_schwartz(double alt, double lat);
   
   Vector3 calculate_gravity_savage_n(const Matrix& C_n_to_e, double h);
   
   Vector3 calculate_gravity_savage_ned(const Matrix& C_n_to_e, double h);
   }  // namespace navutils
   }  // namespace navtk