How to use FFTW3 (2010).

This page contains a short tutorial of some basics of the usage of the library FFTW3.

The pdf of the tutorial can be found in
fftw_tutorial.pdf

The codes of the examples are
EXAMPLE1_basicusage.c
EXAMPLE2_transform.c
EXAMPLE3_cosine_sine.c
EXAMPLE4_product.c

examples.tar.gz

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(Fast Fourier Transform. Image source. Image under CC by 3.0 licence.)