From 8bee573a78108656135cdb44a126d9a17209a08b Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 21 Feb 2011 16:17:58 +0100
Subject: workaround ICC aggressive optimization

---
 test/stable_norm.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'test/stable_norm.cpp')

diff --git a/test/stable_norm.cpp b/test/stable_norm.cpp
index 4480c5203..d78496fc3 100644
--- a/test/stable_norm.cpp
+++ b/test/stable_norm.cpp
@@ -29,9 +29,12 @@ template<typename T> bool isNotNaN(const T& x)
   return x==x;
 }
 
+// workaround aggressive optimization in ICC
+template<typename T> EIGEN_DONT_INLINE  T sub(T a, T b) { return a - b; }
+
 template<typename T> bool isFinite(const T& x)
 {
-  return isNotNaN(x-x);
+  return isNotNaN(sub(x,x));
 }
 
 template<typename T> EIGEN_DONT_INLINE T copy(const T& x)
-- 
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