FFT calculation for Analog To Digital Converter test

Hello everybody

I have a signal ( in the form of a table ) that I need to calculate its FFT , but I do not know how .Can you give me some code to calcualte FFT of the signal??

Of course not using FFT function of MATLAB.

Thanks in advance

[Walter Roberson]

There have been a fair number of posts showing the implementation for fft. you should search for existing answers .