Program Listing for File cheby.h

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#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