Intel® Math Kernel Library (Intel® MKL) offers FFTW2 and FFTW3 interfaces to Intel MKL Fast Fourier Transform and Trigonometric Transform functionality. The purpose of these interfaces is to enable applications using FFTW (www.fftw.org) to gain performance with Intel MKL without changing the program source code.
Both FFTW2 and FFTW3 interfaces are provided in open source as FFTW wrappers to Intel MKL. For ease of use, FFTW3 interface is also integrated in Intel MKL.
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