# rffti¶

## Purpose¶

Computes inverse real 1- or 2-D Fast Fourier transform.

## Format¶

y = rffti(x)
Parameters: x (NxK matrix) – data y (LxM real matrix) – where $$L$$ and $$M$$ are the smallest prime factor products greater than or equal to $$N$$ and $$K$$.

## Remarks¶

It is up to the user to guarantee that the input will return a real result. If in doubt, use ffti().