Install fftw2 by entering the following commands in the terminal:
sudo apt update sudo apt install fftw2
Description:
library for computing Fast Fourier Transforms
This library computes Fast Fourier Transforms (FFT) in one or more dimensions. It is extremely fast. This package contains the shared library version of the fftw libraries in double precision. . To get the static library and the header files you need to install fftw-dev. . For documentation and test programs, install fftw-docs
Homepage: http://fftw.org
Version: 2.1.5-4.2
Section: universe/libs