小试的添加数据，没有太大的技术，很基础的一段代码-Add a small test data

kissfft 源代码，经过部分修改，可能还不是十分的完美， 但是加速明显-Test Please carefully write a detailed upload function data, including the content descr iption (at least 20 words). Try not to let the station to the time spent on your correction instructions. Not have a passwo