From e9ea5e90366d485ca29db4aa013d38cd9fef3fc9 Mon Sep 17 00:00:00 2001
From: Erik Hofman <erik@ehofman.com>
Date: Tue, 24 May 2016 14:51:17 +0200
Subject: [PATCH] Revert the check fro std::isnan() and isnan()

---
 simgear/math/SGMisc.hxx | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/simgear/math/SGMisc.hxx b/simgear/math/SGMisc.hxx
index c317b431..79030536 100644
--- a/simgear/math/SGMisc.hxx
+++ b/simgear/math/SGMisc.hxx
@@ -153,10 +153,10 @@ public:
   /// Use with care: allways code that you do not need to use that!
   static bool isNaN(const T& v)
   {
-#ifdef HAVE_ISNAN
-    return (isnan(v) != 0);
-#elif defined HAVE_STD_ISNAN
+#ifdef HAVE_STD_ISNAN
     return std::isnan(v);
+#elif defined HAVE_ISNAN
+    return (isnan(v) != 0);
 #else
     // Use that every compare involving a NaN returns false
     // But be careful, some usual compiler switches like for example