From df2ed255589fa5b294ef58a6ccd414d57d9f452d Mon Sep 17 00:00:00 2001
From: Andrea Weikert <elubie@gmx.net>
Date: Sat, 6 Feb 2010 10:50:34 +0000
Subject: [PATCH] MSVC compile fix * needed to add _USE_MATH_DEFINES to make
 M_PI known

---
 intern/iksolver/intern/IK_QSegment.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/intern/iksolver/intern/IK_QSegment.cpp b/intern/iksolver/intern/IK_QSegment.cpp
index b84f11a03e2..85946d7c728 100644
--- a/intern/iksolver/intern/IK_QSegment.cpp
+++ b/intern/iksolver/intern/IK_QSegment.cpp
@@ -28,6 +28,10 @@
  */
 
 #include "IK_QSegment.h"
+#ifdef WIN32
+#define _USE_MATH_DEFINES
+#endif
+#include <cmath>
 
 // Utility functions