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
| Example |
|---|
|
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? |