General Description

FFTW ("Fastest Fourier Transform in the West") 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).

Basic Usage

Useful Options

Further Information

See the official website for more detail: FFTW