what happen inside the fast fourier transform(fft) code ?

i would like to know behind the code fft what was the process goes on..

Answer 1

[John D'Errico]

MathWorks does not give out details of compiled code, at least unless you are an employee.

At most, you can read the doc for ifft.

doc ifft

In there, you will see that it probably just calls fft. And fft provides references that you can read.

doc fft

I'm afraid we can't give you much more than that.