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  • Provides: FFTW v3
  • Access: module load cray-fftw

FFTW is a C subroutine library (which includes a Fortran interface) 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).

Only the version 3 interface is available on ARCHER2.