From 58fbf2c453d6de91294751a3352e40d884033eb0 Mon Sep 17 00:00:00 2001
From: Kynos <mail01@delago.net>
Date: Fri, 18 Jul 2014 19:52:29 +0200
Subject: [PATCH] Remove isnan() and isinf() templated from QGC.h only if prior
 to Visual Studio 2013

---
 src/QGC.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/QGC.h b/src/QGC.h
index e8e582efd..f9b00845d 100644
--- a/src/QGC.h
+++ b/src/QGC.h
@@ -33,6 +33,24 @@
 
 /* Windows fixes */
 #ifdef _MSC_VER
+#if (_MSC_VER < 1800)	/* only PRIOR to Visual Studio 2013 */
+/* Needed define for Eigen */
+//#define NOMINMAX
+#include <limits>
+template<typename T>
+inline bool isnan(T value)
+{
+	return value != value;
+
+}
+
+// requires #include <limits>
+template<typename T>
+inline bool isinf(T value)
+{
+	return (value == std::numeric_limits<T>::infinity() || (-1 * value) == std::numeric_limits<T>::infinity()) && std::numeric_limits<T>::has_infinity;
+}
+#endif
 #elif defined __APPLE__
 #include <cmath>
 #ifndef isnan
-- 
2.22.0