FFTW 3.1.2 Description:

FFTW was designed to be 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 3.1.2 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.

Related searches:

active dimensions 3

FFTW security information

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