cliFFTop contains a small collection of ffts written in zig

Features:

• Routines for complex-valued data, as well as strictly real-valued data.
• Support f32, f64 data types.
• Includes bash script for running benchmarks (requires hyperfine), result csv will be written to "results" directory. (Note: repository contains csv results from a test machine. These will be overwritten by results for your test machine when running this bash script.)
• In the examples directory, is a zig wrapper for calling the fftw library is included (requires system library for fftw, if desired to be run.) Comment out appropriate lines in examples/build.zig, and benchmarking/gnuplot_stuff/compare_speeds.gp if no fftw.
• Includes bash script for plotting benchmark results (requires gnuplot).
• A motivation here was for audio processing (strictly real valued data).

Example of benchmarking results: