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C subroutine library for computing the Discrete Fourier Transform in one or more dimensions, of both real and complex data, and of arbitrary input size. The FFTW team's benchmarks, performed on a variety of platforms, show that FFTW's performance is typically superior to that of other publicly available FFT software. Moreover, FFTW's performance is portable: the program will perform well on most architectures without modification. However, FFTW appears to be the fastest program most of the time for in-order transforms, especially in the multi-dimensional and real-complex cases.


User manual included


Download version 3.2 (stable)
released on 22 December 2008


Related Projects


LicenseVerified byVerified onNotes
GPLv2Kelly Hopkins22 December 2008
GPLv2orlaterKelly Hopkins22 December 2008

Leaders and contributors

Matteo Frigo Maintainer
Steven G. Johnson Maintainer

Resources and communication

Audience Resource type URI
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Software prerequisites

This entry (in part or in whole) was last reviewed on 7 January 2008.


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