--- trunk/OOPSE/libmdtools/NPTi.cpp	2003/07/09 01:41:11	577
+++ trunk/OOPSE/libmdtools/NPTi.cpp	2003/07/09 02:15:29	578
@@ -1,3 +1,4 @@
+#include <cmath>
 #include "Atom.hpp"
 #include "SRI.hpp"
 #include "AbstractClasses.hpp"