From 6b8d40d224339aa81b25e9b889a17e07b2f9dc29 Mon Sep 17 00:00:00 2001
From: Oleg Kalachev <okalachev@gmail.com>
Date: Wed, 22 May 2019 00:13:28 +0300
Subject: [PATCH] lpe: fix checking for sane pitch/roll in flow correction

---
 src/modules/local_position_estimator/sensors/flow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/local_position_estimator/sensors/flow.cpp b/src/modules/local_position_estimator/sensors/flow.cpp
index f087b782124a..a15cf27cf9de 100644
--- a/src/modules/local_position_estimator/sensors/flow.cpp
+++ b/src/modules/local_position_estimator/sensors/flow.cpp
@@ -34,7 +34,7 @@ void BlockLocalPositionEstimator::flowInit()
 int BlockLocalPositionEstimator::flowMeasure(Vector<float, n_y_flow> &y)
 {
 	// check for sane pitch/roll
-	if (_eul(0) > 0.5f || _eul(1) > 0.5f) {
+	if (fabs(_eul(0)) > 0.5f || fabs(_eul(1)) > 0.5f) {
 		return -1;
 	}