From 48a3288753a3ec0bbd5e1f826ea413e1a6854fbb Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Mon, 18 Jan 2016 13:39:46 -0800
Subject: [PATCH] Fix QuRT build

---
 matrix/helper_functions.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/matrix/helper_functions.hpp b/matrix/helper_functions.hpp
index 96d2b82751..d39b672d75 100644
--- a/matrix/helper_functions.hpp
+++ b/matrix/helper_functions.hpp
@@ -4,7 +4,7 @@
 
 // grody hack - this should go once C++11 is supported
 // on all platforms.
-#ifdef __PX4_NUTTX
+#if defined (__PX4_NUTTX) || defined (__PX4_QURT)
 #include <math.h>
 #else
 #include <cmath>
@@ -16,7 +16,7 @@ namespace matrix
 template<typename Type>
 Type wrap_pi(Type x)
 {
-#ifdef __PX4_NUTTX
+#if defined (__PX4_NUTTX) || defined (__PX4_QURT)
     if (!isfinite(x)) {
 #else
     if (!std::isfinite(x)) {