https://nl.mathworks.com/help/coder/ref/coder.fftw.standalonefftw3interface.getplanmethod.html
coder.fftw.StandaloneFFTW3Interface.getPlanMethod - Return FFTW planning method - MATLAB
This MATLAB function returns the FFTW planning method for FFTW library calls in generated standalone code.
planning methodcoderfftwreturnmatlab