adsp2116x的基4fft-adsp2116x base 4fft

Analog Device Blackfin DSP的基4fft运算函数库源码，正向输入，正向输出，专为Blackfin处理器优化过的代码-Analog Device Blackfin DSP computing base 4fft library source code, positive input, positive output, specifically optimized for the Blackfin processor, code

C实现的DSP中基4FFT算法实现，仅供大家参考。-C implementation of DSP algorithms in the base 4FFT, only for your reference.

基4fft和ifft源码，测试结果和matlab一致-source code of fft&ifft based on 4.result is identical with that of matlab