async def METHOD_NAME(value_in: float) -> float:
    stream = cuda.stream()
    h_src, h_dst = cuda.pinned_array(8), cuda.pinned_array(8)
    h_src[:] = value_in
    d_ary = cuda.to_device(h_src, stream=stream)
    d_ary.copy_to_host(h_dst, stream=stream)
    done_result = await stream.async_done()
    self.assertEqual(done_result, stream)
    return h_dst.mean()