From 7b47d54d6b55cef863fbca742b4e9d95f84f3e9e Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Tue, 17 May 2016 20:55:57 +1000
Subject: [PATCH] AP_Common: workaround for SITL on windows

---
 libraries/AP_Common/missing/cmath | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/libraries/AP_Common/missing/cmath b/libraries/AP_Common/missing/cmath
index 2709fd5770..4d04c10402 100644
--- a/libraries/AP_Common/missing/cmath
+++ b/libraries/AP_Common/missing/cmath
@@ -2,6 +2,22 @@
 
 #include_next <cmath>
 
+#ifdef __CYGWIN__
+// hack to get SITL on windows working
+#ifndef HAVE_CMATH_ISFINITE
+#define HAVE_CMATH_ISFINITE
+#define NEED_CMATH_ISFINITE_STD_NAMESPACE
+#endif
+#ifndef HAVE_CMATH_ISINF
+#define HAVE_CMATH_ISINF
+#define NEED_CMATH_ISINF_STD_NAMESPACE
+#endif
+#ifndef HAVE_CMATH_ISNAN
+#define HAVE_CMATH_ISNAN
+#define NEED_CMATH_ISNAN_STD_NAMESPACE
+#endif
+#endif // __CYGWIN__
+
 #if defined(HAVE_CMATH_ISFINITE) && defined(NEED_CMATH_ISFINITE_STD_NAMESPACE)
 using std::isfinite;
 #endif