IDLfftw3 wrapper for using FFTW 3.x in IDL. The code includes a
general purpose planner function idlfftw_plan, and procedures to
execute a plan (idlfftw_execute) and delete a plan (idlfftw_delplan).

This code was inspired by FFTW2IDL by Andreas Reigber.

For more information about FFTW, please see

   http://www.fftw.org/