code: def _ctypes_dtype(parameter):
      
      ctype = parameter.ctype
      if ctype is None:
          if parameter.kind is not None:
              return "{}({})".format(parameter.dtype, parameter.kind)
          else:
              return parameter.dtype
      else:
          return"{}({})".format(parameter.dtype, ctype)
docs: Determines the ISO_C data type to use for describing the specified parameter.