Aspects

Fftw

FFTW, "The Fastest Fourier Transform in The West", is a C library which implements discrete Fourier Transforms

Gsl

The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers.

Others

Quality | Example |
---|---|

Slower |
"You can have a look at this speed performance benchmark from fftw which suggests that gsl is about 3-4 times slower than fftw 3" from question "Is FFTW significantly better than GSL for real transform calculations?" |