fftw src edf2919e47b9e3c7a38e73561cca2254cbf97fe28636623b16cc6be0da9a4f73 Fast fourier transform library FFTW is a collection of fast C routines for computing the Discrete Fourier Transform in one or more dimensions. It includes complex, real, and parallel transforms, and can handle arbitrary array sizes efficiently. bero <bero@lindev.ch> https://www.fftw.org