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- FFTW is 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).
- Flavors:
- - double: double precision library
- - float: single precision library
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