jfftw3 provides JNI access to FFTW, an open source
C library for the computation of discrete Fourier
transforms. jfftw3 consists of a thin native
wrapper for the FFTW 3.2 library. The wrapping
covers FFTW's memory allocation, basic planner
interface, and wisdom handling. The native wrapper
is designed to support automatic JNI generation by
gluegen into a useful Java API providing the
original procedural FFTW interface.