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blackscholes
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Posts: 87
Joined: February 16th, 2012, 12:58 pm

How to edit/view built in Matlab code for FFT

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.
 
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OOglesby
Posts: 42
Joined: August 26th, 2011, 5:34 am

How to edit/view built in Matlab code for FFT

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.
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