--- branches/development/src/math/CubicSpline.cpp	2011/11/22 20:38:56	1665
+++ trunk/src/math/CubicSpline.cpp	2012/08/22 02:28:28	1782
@@ -68,7 +68,7 @@ void CubicSpline::addPoints(const vector<RealType>& xp
     simError();    
   }
 
-  for (int i = 0; i < xps.size(); i++) 
+  for (unsigned int i = 0; i < xps.size(); i++) 
     data_.push_back(make_pair(xps[i], yps[i]));
 }