torch.bitwise_not
torch.bitwise_not(input, *, out=None) -> Tensor
Computes the bitwise NOT of the given input tensor. The input
   tensor must be of integral or Boolean types. For bool tensors, it
   computes the logical NOT.
Parameters:
      input (Tensor) -- the input tensor.
Keyword Arguments:
      out (Tensor, optional) -- the output tensor.
Example:
  >>> torch.bitwise_not(torch.tensor([-1, -2, 3], dtype=torch.int8))
  tensor([ 0,  1, -4], dtype=torch.int8)
