Sign
sign(input, out=NULL) -> Tensor
Returns a new tensor with the signs of the elements of input.
$$ \mbox{out}_{i} = \mbox{sgn}(\mbox{input}_{i}) $$
Examples
if (torch_is_installed()) {
a = torch_tensor(c(0.7, -1.2, 0., 2.3))
a
torch_sign(a)
}
#> torch_tensor
#> 1
#> -1
#> 0
#> 1
#> [ CPUFloatType{4} ]