From 0ed868d97b40116ae1fc260e0174c96455a727c0 Mon Sep 17 00:00:00 2001
From: Tom Pittenger <magicrub@gmail.com>
Date: Tue, 14 Jun 2016 20:52:51 -0700
Subject: [PATCH] SITL: compiler warning, comparing float to 0

---
 libraries/SITL/SIM_Aircraft.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/SITL/SIM_Aircraft.cpp b/libraries/SITL/SIM_Aircraft.cpp
index 049d3e9e4d..95d951ff83 100644
--- a/libraries/SITL/SIM_Aircraft.cpp
+++ b/libraries/SITL/SIM_Aircraft.cpp
@@ -244,7 +244,7 @@ double Aircraft::rand_normal(double mean, double stddev)
 
             r = x*x + y*y;
         }
-        while (r == 0.0 || r > 1.0);
+        while (is_zero(r) || r > 1.0);
         {
             double d = sqrt(-2.0*log(r)/r);
             double n1 = x*d;