From a31f7b7988dcf20f2460611f49fde4de343ba098 Mon Sep 17 00:00:00 2001 From: Abhishek Mishra Date: Sun, 20 Sep 2026 13:06:55 +0000 Subject: [PATCH] Documentation/math: explain that KissFFT is a small FFT library Follow-up to apache/nuttx#20194. The KissFFT page only described how NuttX vendors the package. State that it is a small open-source FFT implementation used in many embedded projects. Signed-off-by: Abhishek Mishra --- Documentation/applications/math/kissfft/index.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/applications/math/kissfft/index.rst b/Documentation/applications/math/kissfft/index.rst index fcae4fd94e6..9ce5554cbb1 100644 --- a/Documentation/applications/math/kissfft/index.rst +++ b/Documentation/applications/math/kissfft/index.rst @@ -2,6 +2,11 @@ ``kissfft`` KissFFT =================== +KissFFT is a small open-source Fast Fourier Transform (FFT) library +("Keep It Simple, Stupid") used in many embedded projects. It provides +mixed-radix complex FFTs and a real-input helper, with floating-point +or fixed-point types and a BSD license that is easy to vendor. + ``apps/math/kissfft`` vendors `KissFFT `_ (tag ``v130``) and applies ``kissfft.patch``. It compiles ``kiss_fft.c`` and ``tools/kiss_fftr.c``.