Authors of FFTW (reachable at fftw@fftw.org): Matteo Frigo Stevenj G. Johnson Stefan Kral wrote genfft-k7/*.ml*, which was added in fftw-3.0 and removed in fftw-3.2. Support for the Cell Broadband Engine was graciously donated by the IBM Austin Research Lab. Support for MIPS64 paired-single SIMD instructions was graciously donated by CodeSourcery, Inc.