diff --git a/hurricane/src/hurricane/hurricane/Cell.h b/hurricane/src/hurricane/hurricane/Cell.h
index fa9c18f7..27819159 100644
--- a/hurricane/src/hurricane/hurricane/Cell.h
+++ b/hurricane/src/hurricane/hurricane/Cell.h
@@ -17,9 +17,7 @@
 // not, see <http://www.gnu.org/licenses/>.
 // ****************************************************************************************************
 
-#ifndef HURRICANE_CELL_H
-#define HURRICANE_CELL_H
-
+#pragma  once
 #include <limits>
 #include "hurricane/Flags.h"
 #include "hurricane/Observer.h"
@@ -502,7 +500,7 @@ class Cell : public Entity {
     public: void setAbutmentBox(const Box& abutmentBox);
     public: void slaveAbutmentBox(Cell*);
     public: void unslaveAbutmentBox(Cell*);
-    public: void setTerminalNetlist(bool isTerminalNetlist) {_flags.set(Flags::TerminalNetlist,isTerminalNetlist);};
+    public: void setTerminalNetlist(bool isTerminalNetlist) { _flags.set(Flags::TerminalNetlist,isTerminalNetlist); };
     public: void setPad(bool isPad) {_flags.set(Flags::Pad,isPad);};
     public: void setFeed(bool isFeed) {_flags.set(Flags::Feed,isFeed);};
     public: void setRouted(bool isRouted) {_flags.set(Flags::Routed,isRouted);};
@@ -589,9 +587,6 @@ INSPECTOR_P_SUPPORT(Hurricane::Cell::MarkerSet);
 INSPECTOR_PR_SUPPORT(Hurricane::Cell::SlavedsRelation);
 
 
-#endif // HURRICANE_CELL_H
-
-
 // ****************************************************************************************************
 // Copyright (c) BULL S.A. 2000-2018, All Rights Reserved
 // ****************************************************************************************************
diff --git a/hurricane/src/hurricane/hurricane/DbU.h b/hurricane/src/hurricane/hurricane/DbU.h
index be2f830b..23a634f1 100644
--- a/hurricane/src/hurricane/hurricane/DbU.h
+++ b/hurricane/src/hurricane/hurricane/DbU.h
@@ -107,6 +107,8 @@ namespace Hurricane {
       static inline void                setSymbolicSnapGridStep ( DbU::Unit step );
       static        DbU::Unit           getOnCustomGrid         ( DbU::Unit u, DbU::Unit step, SnapMode mode=Nearest );
       static inline DbU::Unit           getOnPhysicalGrid       ( DbU::Unit u, SnapMode mode=Superior );
+      static inline DbU::Unit           toCeil                  ( DbU::Unit u, DbU::Unit step );
+      static inline DbU::Unit           toFloor                 ( DbU::Unit u, DbU::Unit step );
     // Conversions.
       static inline Unit                toDb                    ( Unit u );
       static inline double              toGrid                  ( Unit u );
@@ -193,6 +195,12 @@ namespace Hurricane {
   inline void       DbU::setPolygonStep          ( DbU::Unit step )             { _polygonStep = step; }
   inline DbU::Unit  DbU::getOnPhysicalGrid       ( DbU::Unit u, SnapMode mode ) { return getOnCustomGrid(u, grid(1), mode); }
 
+  inline DbU::Unit  DbU::toCeil ( DbU::Unit u, DbU::Unit step )
+  { DbU::Unit modulo = u % step; return (modulo) ? (u + step - modulo) : u; }
+  
+  inline DbU::Unit  DbU::toFloor ( DbU::Unit u, DbU::Unit step )
+  { DbU::Unit modulo = u % step; return (modulo) ? (u - modulo) : u; }
+
 
 } // End of Hurricane namespace.