  void operator()(const CPUDevice& d, typename TTypes<T, 3>::ConstTensor input,
                  bool signed_input, int num_bits, bool range_given,
                  Tensor* input_min_tensor, Tensor* input_max_tensor,
                  QuantizerRoundMode round_mode, bool narrow_range,
                  typename TTypes<T, 3>::Tensor out) {
    QuantizeAndDequantizePerChannelImpl<CPUDevice, T>::Compute(
        d, input, signed_input, num_bits, range_given, input_min_tensor,
        input_max_tensor, round_mode, narrow_range, out);
  }
  void operator()(const CPUDevice& d, typename TTypes<T, 3>::ConstTensor input,
                  bool signed_input, int num_bits, bool range_given,
                  Tensor* input_min_tensor, Tensor* input_max_tensor,
                  QuantizerRoundMode round_mode, bool narrow_range,
                  typename TTypes<T, 3>::Tensor out) {
    QuantizeAndDequantizePerChannelImpl<CPUDevice, T>::Compute(
        d, input, signed_input, num_bits, range_given, input_min_tensor,
        input_max_tensor, round_mode, narrow_range, out);
  }