--- trunk/OOPSE/libmdtools/NPT.cpp	2003/09/19 20:00:27	778
+++ trunk/OOPSE/libmdtools/NPT.cpp	2003/10/28 16:03:37	829
@@ -1,4 +1,4 @@
-#include <cmath>
+#include <math.h>
 #include "Atom.hpp"
 #include "SRI.hpp"
 #include "AbstractClasses.hpp"
@@ -66,7 +66,8 @@ template<typename T> void NPT<T>::moveA() {
   double COM[3];
 
   instaTemp = tStats->getTemperature();
-  instaPress = tStats->getPressure();
+  tStats->getPressureTensor( press );
+  instaPress = p_convert * (press[0][0] + press[1][1] + press[2][2]) / 3.0;
   instaVol = tStats->getVolume();
   
   tStats->getCOM(COM);