[Q-e-developers] Fast Fourier Transform

[Miguel Carvajal]

Dear all,
can some one explain to me what is the difference of calling



CALL fwfft ('Custom', rhoc(:,ii), dfftt)
CALL fwfft (‘Wave', rhoc(:,ii), dfftt)
CALL fwfft (‘Dense', rhoc(:,ii),dfftt)
CALL fwfft (’Smooth', rhoc(:,ii), dfftt)
when doing FFT on QE; as well as the appropriate grid to be used in each instance: dfft, dfftp or  dffts.
I have some ideas but not a full understanding of it.
Best regards,

Lic. Miguel Carvajal - Instituto Balseiro - Bariloche
National Atomic Energy Comission
[+54] 2944782429 (tel) / krvajal.miguel (skype)
LinkedIn: in/krvajal
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