Information about software packages installed on the ICHEC systems.
FFTW (Fastest Fourier Transform in the West) is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine transforms or DCT/DST).
FFTW is available under the GNU General Public License.
Further information can be obtained at www.fftw.org.