How to edit/view built in Matlab code for FFT

blackscholes · March 6th, 2013, 12:12 am

I need to update the twiddle factor for the FFT algorithm in Matlab. Is there any way I can get access to the FFT code? This is a quick change.

OOglesby · March 6th, 2013, 10:19 pm

You do not have access to the code for MATLAB's FFT. If you remove the MATLAB specific wrapper functions, it uses the FFTW library under the hood (http://www.fftw.org/). MATLAB does provide a function that allows tune the runtime speed of fft. Type 'help fftw' or 'doc fftw' at the MATLAB command prompt.I have never used the fftw function, so I don't know if it will help or suggestions for options/usage.