Index of /jutut/kuvat/programming_examples/fftanalyzer

Name	Last modified	Size	Description

Parent Directory		-
Makefile	2025-01-04 04:27	380	The build script for GNU make
README.html	2025-01-04 16:20	1.3K	Instructions, also shown below
fft-fftw.cc	2025-01-04 23:43	4.0K	A test FFT module that only uses libFFTW3
fft-improved.cc	2025-01-04 21:38	22K	The FFT module with some performance improvements
fft-orig.cc	2025-01-04 05:42	11K	The FFT module shown in the video
fft.hh	2025-01-04 18:55	5.3K	The interface for DFT methods
main.cc	2025-01-04 21:20	8.1K	The main program

This folder contains supplementary material for this video: https://www.youtube.com/watch?v=C4tHxouarGc

Copy one of fft-orig.cc or fft-improved.cc into fft.cc.
Then you can use the supplied Makefile (i.e. simply type make to build).

Notes for building:

Use c++23, otherwise std::println will not compile.
With Clang, use -Wno-mathematical-notation-identifier-extension to suppress the warning about subscript names (prevents the literal interpretation of a mistake by the Unicode consortium).^*
With GCC, refrain from using -pedantic for the same reason.

*) “Apparently that is Unicode's fault. Subscript numbers 0-9 do not belong to (X)ID_Continue, because their category is Number, Other (No), not Number, Decimal (Nd).” (Parabolicus)