code: def ordc(item, inset):
      
      assert isinstance(inset, stypes.SpiceCell)
      assert inset.is_char()
      assert isinstance(item, str)
      item = stypes.stringToCharP(item)
      return libspice.ordc_c(item, ctypes.byref(inset))
docs: The function returns the ordinal position of any given item in a
      character 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/ordc_c.html
  
      :param item: An item to locate within a set.
      :type item: str
      :param inset: A set to search for a given item.
      :type inset: SpiceCharCell
      :return: the ordinal position of item within the set
      :rtype: int