procedures there are two fft-time domain, frequency domain c code, there are four-and split-based algorithm fft transformation sequence is the source, are the first in the form of a document, I have vc 6.0 environment through debugging. And these procedures-part of the reverse order, rotating part of the factor is relatively fast algorithm, This site should have different procedures, I algorithm faster.

fft变换的各种方法的源代码
.........................\bitrev.h
.........................\fft.h
.........................\fftdif.h
.........................\real num
.........................\........\bitrev.h
.........................\........\r1fft.h
.........................\........\rfft.h
.........................\srfft.h

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