资 源 简 介
This computes an in-place complex-to-complex FFT
x and y are the real and imaginary arrays of 2^m points.
dir = 1 gives forward transform
dir = -1 gives reverse transform -This computes an in-place complex-to-complex FFT x and y are the real and imaginary arrays of 2 ^ m points. Dir = 1 gives forward transform dir =-1 gives reverse transform
