Those support files generate twiddle factors for an user selectable number of points. The supported decimations are radix-2, radix-3, radix-4, radix-5 and any combination of those for mixed-radix implementations accepted by the AI Engine API. In addition to the twiddle creation, the script can also generate the twiddle variable declaration section of the kernel header file, putting the output in a “Twiddle_declaration.txt” text file.