Returns a formatted name for the ctypes Fortran wrapper module.

        :arg index: the index of the array to return a name for. None for the new parameter,
          otherwise the index for the integer variable name of that dimension.

def _get_ctypes_name(self, index=None):
        """Returns a formatted name for the ctypes Fortran wrapper module.

        :arg index: the index of the array to return a name for. None for the new parameter,
          otherwise the index for the integer variable name of that dimension.
        """
        if index is None:
            if ("allocatable" not in self.modifiers and "pointer" not in self.modifiers
                and self.dtype != "logical"):
                #The fortan logical has type 4 by default, whereas c_bool only has 1
                return self.name
            else:
                return "{}_c".format(self.name)
        else:
            return "{0}_{1:d}_c".format(self.name, index)