本程序对输入序列din实现DIT——FFT基2算法，点数取大于等于din长度的2的幂次-The program input sequence din realize DIT- FFT radix-2 algorithm, points greater than or equal din take the length of two of the power law

DIT_FFT基2快速离散傅里叶变换的源程序可在vc++上编程应用-DIT FFT radix-2 fast discrete Fourier transform of the source can be used in vc++ programming