.. _program_listing_file_interfaces_spice_cheby.h:

Program Listing for File spice_cheby.h
======================================

|exhale_lsh| :ref:`Return to documentation for file <file_interfaces_spice_cheby.h>` (``interfaces/spice_cheby.h``)

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

.. code-block:: cpp

   
   
   #pragma once
   
   #include <cspice/SpiceUsr.h>
   #include <math.h>
   #include <stdarg.h>
   #include <stdio.h>
   #include <stdlib.h>
   #include <string.h>
   
   #include "lupnt/core/constants.h"
   
   namespace lupnt {
     void cheby_eval(double x, double* scale, double* coeff, long num, double* f, double* df);
   
     Vec2 cheby_eval_ad(Real x, double* scale, double* coeff, long num);
   
     int cheby_posvel(double t, double* seg, long len, double pos[3], double vel[3]);
   
     Vec6 cheby_posvel_ad(Real t, double* seg, long len);
   
     int cheby_verify(double* seg, long len);
   
     typedef struct {
       long target;  // target body code
       long center;  // center body code
       long frame;   // frame of reference code
       long len;     // length of segment in doubles
       double* seg;  // allocated segment
     } segment_t;
   
     int cheby_segment(SpiceInt daf, SpiceDouble* dc, SpiceInt* ic, segment_t* s);
   
     segment_t* spk_extract(char const* path, long* segs);
   
     void spk_free(segment_t* s, long n);
   
   }  // namespace lupnt