# tensorplay.fft._transforms.fftn

Source: https://www.tensorplay.cn/docs/generated/tensorplay.fft._transforms.fftn.html

```python
tensorplay.fft._transforms.fftn(input, s=None, dim=None, norm=None, *, out=None)
```

Computes the N-dimensional discrete Fourier transform over dim.

dim defaults to the last len(s) dimensions when s is
given and to every dimension otherwise; an entry of -1 in s
keeps that dimension’s length.