From 04c36efdbf71977d159910e1773d255f067556d9 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Wed, 15 Aug 2018 12:35:52 +1000
Subject: [PATCH] AP_InertialSensor: eliminate SITL float-equals issues

---
 libraries/AP_InertialSensor/AP_InertialSensor_SITL.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/AP_InertialSensor/AP_InertialSensor_SITL.cpp b/libraries/AP_InertialSensor/AP_InertialSensor_SITL.cpp
index eedc0c918b..05930bca91 100644
--- a/libraries/AP_InertialSensor/AP_InertialSensor_SITL.cpp
+++ b/libraries/AP_InertialSensor/AP_InertialSensor_SITL.cpp
@@ -164,8 +164,8 @@ void AP_InertialSensor_SITL::timer_update(void)
 
 float AP_InertialSensor_SITL::gyro_drift(void)
 {
-    if (sitl->drift_speed == 0.0f ||
-        sitl->drift_time == 0.0f) {
+    if (is_zero(sitl->drift_speed) ||
+        is_zero(sitl->drift_time)) {
         return 0;
     }
     double period  = sitl->drift_time * 2;