torch.ceil
torch.ceil(input, *, out=None) -> Tensor
Returns a new tensor with the ceil of the elements of "input", the
   smallest integer greater than or equal to each element.
For integer inputs, follows the array-api convention of returning a
   copy of the input tensor.
  \text{out}_{i} = \left\lceil \text{input}_{i} \right\rceil

Parameters:
      input (Tensor) -- the input tensor.
Keyword Arguments:
      out (Tensor, optional) -- the output tensor.
Example:
  >>> a = torch.randn(4)
  >>> a
  tensor([-0.6341, -1.4208, -1.0900,  0.5826])
  >>> torch.ceil(a)
  tensor([-0., -1., -1.,  1.])
