From f8a48f9cc5600f2833a0c7d16fcf6ba38997a69e Mon Sep 17 00:00:00 2001
From: Julian Oes <julian@oes.ch>
Date: Thu, 28 Apr 2016 16:30:49 +0200
Subject: [PATCH] ekf: now it should even compile for NuttX

---
 EKF/ekf.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/EKF/ekf.cpp b/EKF/ekf.cpp
index f9d90e9465..9826627baa 100644
--- a/EKF/ekf.cpp
+++ b/EKF/ekf.cpp
@@ -43,7 +43,7 @@
 #include "mathlib.h"
 
 #ifndef __PX4_QURT
-#if defined(__cplusplus)
+#if defined(__cplusplus) && !defined(__PX4_NUTTX)
 #include <cmath>
 #define ISFINITE(x) std::isfinite(x)
 #else