.. _program_listing_file_applications_ephemeris_lunanet_almanac.h:

Program Listing for File lunanet_almanac.h
==========================================

|exhale_lsh| :ref:`Return to documentation for file <file_applications_ephemeris_lunanet_almanac.h>` (``applications/ephemeris/lunanet_almanac.h``)

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

.. code-block:: cpp

   #pragma once
   
   #include <string>
   #include <vector>
   
   #include "lupnt/applications/ephemeris/lunanet_ephemeris.h"
   #include "lupnt/core/constants.h"
   #include "lupnt/core/definitions.h"
   
   namespace lupnt {
   
     struct AlmanacFitOptions {
       int poly_order = 1;
   
       int num_fourier_terms = 1;
   
       double gm = GM_MOON;
   
       double sidereal_period_s = 27.321661 * SECS_DAY;
   
       Frame frame = Frame::MOON_CI;
     };
   
     class LansAlmanac {
     public:
       LansAlmanac() = default;
       explicit LansAlmanac(AlmanacFitOptions options) : options_(options) {}
   
       VecXd Fit(const VecXd& t_s, const MatXd& rv) const;
   
       MatXd Eval(const VecXd& t_s, const VecXd& params) const;
   
       EphemerisFitErrorStats EvalError(const VecXd& t_s, const MatXd& rv_ref,
                                        const VecXd& params) const;
   
       int NumParams() const;
   
       std::vector<std::string> ParamNames() const;
   
       const AlmanacFitOptions& GetOptions() const { return options_; }
   
     private:
       AlmanacFitOptions options_;
     };
   
   }  // namespace lupnt