FFTW 3.1.2 is the latest official version of FFTW (refer to the release notes to find out what is new). Subscribe to the fftw-announce mailing list to receive announcements of future updates. Here is a list of some of FFTW's more...
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FFTW 3.1.2 is the latest official version of FFTW (refer to the release notes to find out what is new). Subscribe to the fftw-announce mailing list to receive announcements of future updates. Here is a list of some of FFTW's more interesting features: * Speed. (Supports SSE/SSE2/3dNow!/Altivec, since version 3.0.) * Both one-dimensional and multi-dimensional transforms. * Arbitrary-size transforms. (Sizes with small prime factors are best, but FFTW uses O(N log N) algorithms even for prime sizes.) * Fast transforms of purely real input or output data. * Transforms of real even/odd data: the discrete cosine transform (DCT) and the discrete sine transform (DST), types I-IV. (Version 3.0 or later.) * Efficient handling of multiple, strided transforms. (This lets you do things like transform multiple arrays at once, transform one dimension of a multi-dimensional array, or transform one field of a multi-component array.) * Parallel transforms: parallelized code for platforms with Cilk or for SMP machines with some flavor of threads (e.g. POSIX). An MPI version for distributed-memory transforms is also available, currently only as part of FFTW 2.1.5. * Portable to any platform with a C compiler. Documentation in HTML and other formats. * Both C and Fortran interfaces. * Free software, released under the GNU General Public License (GPL, see FFTW license). (Non-free licenses may also be purchased from MIT, for users who do not want their programs protected by the GPL. Contact us for details.) (Also see the FAQ.)
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