see title
planFFT(n, effort=0) planDCT(n, type=1, effort=0)
n
size of transform
type
type of DCT
effort
how hard fftw tries to find an optimal plan (0 to 3)
Olaf Mersmann <olafm@statistik.uni-dortmund.de>
FFT and IFFT
FFT
IFFT