From 5f4c7e0f93e535bba6e5068afcbf513fe4eec297 Mon Sep 17 00:00:00 2001
From: RomanBapst <bapstroman@gmail.com>
Date: Fri, 31 May 2024 07:50:56 +0200
Subject: [PATCH] FilteredDerivative: set initialised to false if sample
 interval is invalid

Signed-off-by: RomanBapst <bapstroman@gmail.com>
---
 src/lib/mathlib/math/filter/FilteredDerivative.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib/mathlib/math/filter/FilteredDerivative.hpp b/src/lib/mathlib/math/filter/FilteredDerivative.hpp
index 09b1fd49777e..f0099334d2e7 100644
--- a/src/lib/mathlib/math/filter/FilteredDerivative.hpp
+++ b/src/lib/mathlib/math/filter/FilteredDerivative.hpp
@@ -89,6 +89,9 @@ class FilteredDerivative
 		if (_initialized) {
 			if (_sample_interval > FLT_EPSILON) {
 				_alpha_filter.update((sample - _previous_sample) / _sample_interval);
+
+			} else {
+				_initialized = false;
 			}
 
 		} else {