torch.nn.functional.hardswish
torch.nn.functional.hardswish(input, inplace=False)
Applies the hardswish function, element-wise, as described in the
   paper:
Searching for MobileNetV3.
  \text{Hardswish}(x) = \begin{cases}     0 & \text{if~} x \le -3,
  \\     x & \text{if~} x \ge +3, \\     x \cdot (x + 3) /6 &
  \text{otherwise} \end{cases}

See "Hardswish" for more details.
Return type:
      Tensor