code: def ordi(item, inset):
      
      assert isinstance(inset, stypes.SpiceCell)
      assert inset.is_int()
      assert isinstance(item, int)
      item = ctypes.c_int(item)
      return libspice.ordi_c(item, ctypes.byref(inset))
docs: The function returns the ordinal position of any given item in an
      integer set.  If the item does not appear in the set, the function
      returns -1.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/ordi_c.html
  
      :param item: An item to locate within a set.
      :type item: int
      :param inset: A set to search for a given item.
      :type inset: SpiceIntCell
      :return: the ordinal position of item within the set
      :rtype: int