# tensorplay.functional.log

Source: https://www.tensorplay.cn/docs/generated/tensorplay.functional.log.html

```python
tensorplay.functional.log(input, *, out=None) → Tensor
```

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

$$y_{i} = \log_{e} (x_{i})$$

Parameters:

input ([Tensor](/docs/generated/tensorplay.Tensor.html#tensorplay.Tensor)) – the input tensor.

Keyword Arguments:

out ([Tensor](/docs/generated/tensorplay.Tensor.html#tensorplay.Tensor), optional) – the output tensor.

Example:

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