I found some odd behavior in FFT, and I think it's a bug. Inspect

(FFT new nu: 8;
	realData: ((0 to: 255) collect: [ :each |
		(2 * Float pi * each / 255) cos]);
	transformForward: true.

and take a look at realData. Since the original data is real, the real 
part of the Fourier transform must be symmetric, so realData first 
should equal realData last, but it does not happen, and instead of it 
realData second (!) equals realData last.

Luciano.-