I m using the ADSP-21364 EZ-KIT Lite , trying to implement an algorithm based on overlap-add through the block based talkthru example.
As part of the algorithm i m trying to implement an fft and an inverse fft . I use the rfft1024 command and some kind of problem occurs with the numbers in the output of the fft and all the block is filled with -1.#QNAN .
First of all what does -1.#QNAN mean
And what shoud the problem be and -1.#QNAN occurs all the time ?
I m attaching the blockProcess.c file of the code . The other files of the example remain the same exept of a hamming window generated in main and some necessary declarations
PS the algorithm of the overlap add method can have some mistakes as i cant implement the fft right in order to check it .