PDL::FFTW 2.4.3

PDL::FFTW is a PDL interface to the Fastest Fourier Transform in the West v2.x.

This is a means to interface PDL with the FFTW library. Its similar to the standard FFT routine but its usually faster and has support for real transforms. It works well for the types of PDLs for which was the library was compiled (otherwise it must do conversions).

SYNOPSIS

use PDL::FFTW

load_wisdom("file_name");

out_cplx_pdl = fftw(in_cplx_pdl);
out_cplx_pdl = ifftw(in_cplx_pdl);

out_cplx_pdl = rfftw(in_real_pdl);
out_real_pdl = irfftw(in_cplx_pdl);

cplx_pdl = nfftw(cplx_pdl);
cplx_pdl = infftw(cplx_pdl);

cplx_pdl = Cmul(a_cplx_pdl, b_cplx_pdl);
cplx_pdl = Cconj(a_cplx_pdl);
real_pdl = Cmod(a_cplx_pdl);
real_pdl = Cmod2(a_cplx_pdl);