The support files generate twiddle factors for a selectable number of points. Supported decimations are radix-2, radix-3, radix-4, radix-5, and any combination of those. The AI Engine API accepts these for mixed-radix implementations.
Besides generating the twiddle factors, the script can also generate the twiddle variable declaration section of the kernel header file. It puts the output in a “Twiddle_declaration.txt” text file.