Fourier Transform Source Code Wanted!

[Robert_Jules_Shaughnessy at cup.portal.com]

     I am looking for the source code to a Fast Fourier Transform routine.
I would like to find one in Turbo Pascal, however, if you have it in C or
anything else I would be VERY happy to get my hands on it! (Even Basic, 
for ANY computer! I will convert it!)

Thanks in advance!