ADI 的 ADSP_BF533 FFT程序-This file contains the code for the implementation of FFT. The Algorithm

　　　　　　　 used is Decimation in Time. For the optimization point of view, the whole

　　　　　　　 computation of butterfly signal flow has beeen divided in three parts. The

　　　　　　　 first part, the middle part and the last part. In the first part, the

　　　　　　　 Stage 1 and Stage 2 of the butterfly structure are implemented. In the 2nd

　　　　　　　 part the general butterfly computation is done, which corresponds to the

　　　　　　　 middle stages of butterfly. In the last part the last stage of the buttrfly

　　　　　　　 structure is implemented, where mainly the loop overheads are saved.