#2484 Incorrect FFT for input of size 2

[Joni]

To reproduce: inverse_fft(fft([1, 0]))
Expected output: [1.0, 0.0]
Actual output: [0.5 %i + 0.5, - 0.5 %i - 0.5]

"fft([1,0])" produces [0.5, 0.5 %i], it probably should be [0.5, 0.5].

[Raymond Toy]

Thanks for the report. It's a bug in creation of the sin/cos twiddle table for a 2-point FFT. Will be fixed soon.

[Raymond Toy]

Fixed.