From a6d387a359354c8f75f9a0dfe623600e6a303c8c Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 19 Aug 2008 11:06:40 +0000
Subject: Various compilation fixes for MSVC 9. All tests compile but some
 still fail at runtime in ei_aligned_free() (even without vectorization).

---
 Eigen/Geometry | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'Eigen/Geometry')

diff --git a/Eigen/Geometry b/Eigen/Geometry
index 7a3ca9ede..d62723188 100644
--- a/Eigen/Geometry
+++ b/Eigen/Geometry
@@ -3,6 +3,10 @@
 
 #include "Core"
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 namespace Eigen {
 
 /** \defgroup Geometry Geometry module
-- 
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