def METHOD_NAME(self):
    ff32_fname = tests.get_data_path(("FF", "n48_multi_field.ieee32"))
    ff64_fname = tests.get_data_path(("FF", "n48_multi_field"))
    ff32_cubes = iris.load(ff32_fname)
    ff64_cubes = iris.load(ff64_fname)
    for ff32, ff64 in zip(ff32_cubes, ff64_cubes):
        # load the data
        _, _ = ff32.data, ff64.data
        self.assertEqual(ff32, ff64)