Calling C function expecting char*[]

See also Multiple file access functions — CALCEPH - C language 3.5.4 documentation in particular

  mission_units = (t_calcephcharvalue*)malloc(sizeof(t_calcephcharvalue)*nvalue);

  /* fill  the array radii */
  if (calceph_getconstantvs(peph, "MISSION_UNITS", mission_units, nvalue))