--- branches/development/src/primitives/Inversion.cpp	2012/05/19 13:30:21	1712
+++ branches/development/src/primitives/Inversion.cpp	2012/07/06 22:01:58	1767
@@ -40,6 +40,9 @@
  * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
  */
  
+#include "config.h"
+#include <cmath>
+
 #include "primitives/Inversion.hpp"
 
 namespace OpenMD {