通过读取已有的由matlab产生的数据文件进行1024点浮点fft运算的c程序.其中,radix2()实现基2算法,ChangeOrder(）实现变址运算.-By reading existing data generated by the matlab file for 1024-point floating-point fft computing c procedures. Which, radix2 () realize radix-2 algorithm, ChangeOrder ()