Returns a new tensor with the inverse hyperbolic tangent of the elements of input.
Note
The domain of the inverse hyperbolic tangent is (-1, 1) and values outside this range will be mapped to NaN, except for the values 1 and -1 for which the output is mapped to +/-INF respectively.
out i = tanh − 1 ( input i ) \text{out}_{i} = \tanh^{-1}(\text{input}_{i}) outi=tanh−1(inputi)
>>> a = torch.randn(4).uniform_(-1, 1) >>> a tensor([ -0.9385, 0.2968, -0.8591, -0.1871 ]) >>> torch.atanh(a) tensor([ -1.7253, 0.3060, -1.2899, -0.1893 ])
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