torch.log — PyTorch 2.5 documentation (original) (raw)

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torch.log(input, *, out=None) → Tensor¶

Returns a new tensor with the natural logarithm of the elements of input.

yi=log⁡e(xi)y_{i} = \log_{e} (x_{i})

Parameters

input (Tensor) – the input tensor.

Keyword Arguments

out (Tensor, optional) – the output tensor.

Example:

a = torch.rand(5) * 5 a tensor([4.7767, 4.3234, 1.2156, 0.2411, 4.5739]) torch.log(a) tensor([ 1.5637, 1.4640, 0.1952, -1.4226, 1.5204])

• torch.log
  • log()