From e2211c586714d0c3175d5d38c28d7f1f677d64a3 Mon Sep 17 00:00:00 2001
From: Daniel Agar <daniel@agar.ca>
Date: Wed, 15 Feb 2017 18:02:05 -0500
Subject: [PATCH] QuRT use __builtin_isfinite

---
 matrix/helper_functions.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/matrix/helper_functions.hpp b/matrix/helper_functions.hpp
index 893f4da492..79d57504c7 100644
--- a/matrix/helper_functions.hpp
+++ b/matrix/helper_functions.hpp
@@ -15,8 +15,10 @@ namespace matrix
 
 template<typename Type>
 bool is_finite(Type x) {
-#if defined (__PX4_NUTTX) || defined (__PX4_QURT)
+#if defined (__PX4_NUTTX)
     return PX4_ISFINITE(x);
+#elif defined (__PX4_QURT)
+    return __builtin_isfinite(x);
 #else
     return std::isfinite(x);
 #endif