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diff --git a/ext/dsent/model/std_cells/CellMacros.h b/ext/dsent/model/std_cells/CellMacros.h
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index 000000000..ce4b54473
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+++ b/ext/dsent/model/std_cells/CellMacros.h
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+#ifndef __DSENT_MODEL_STD_CELLS_CELLMACROS_H__
+#define __DSENT_MODEL_STD_CELLS_CELLMACROS_H__
+
+#include "util/CommonType.h"
+#include "model/std_cells/StdCell.h"
+
+namespace DSENT
+{
+    class StdCell;
+
+    // Contains cell macros that can be created within standard cells
+    class CellMacros
+    {
+        private :
+            CellMacros();
+            ~CellMacros();
+
+        public:
+            //NOR2 Macro
+            //Adds a NOR2 to the standard cell, normalized to some size
+            static void addNor2(StdCell* cell_, const String& name_, bool sizable_, bool a1_to_zn_path_, bool a2_to_zn_path_,
+                                const String& a1_net_, const String& a2_net_, const String& zn_net_);
+            //Updates a NOR2 to to the standard cell, normalized to some size
+            static void updateNor2(StdCell* cell_, const String& name_, double normalized_size_);            
+
+            //NAND2 Macro
+            //Adds a NAND2 to the standard cell, normalized to some size
+            static void addNand2(StdCell* cell_, const String& name_, bool sizable_, bool a1_to_zn_path_, bool a2_to_zn_path_,
+                                const String& a1_net_, const String& a2_net_, const String& zn_net_);
+            //Updates a NAND2 to to the standard cell, normalized to some size
+            static void updateNand2(StdCell* cell_, const String& name_, double normalized_size_);            
+        
+            //INVERTER Macro
+            //Adds a inverter to the standard cell, normalized to some size
+            static void addInverter(StdCell* cell_, const String& name_, bool sizable_, bool a_to_zn_path_,
+                                    const String& a_net_, const String& zn_net_);
+            //Updates an inverter to to the standard cell, normalized to some size
+            static void updateInverter(StdCell* cell_, const String& name_, double normalized_size_);            
+
+            //INVZ Macro
+            //Adds a tristated inverter to the standard cell, normalized to some size
+            static void addTristate(StdCell* cell_, const String& name_, bool sizable_, bool a_to_zn_path_, bool oe_to_zn_path_, bool oen_to_zn_path_,
+                                    const String& a_net_, const String& oe_net_, const String& oen_net_, const String& zn_net_);
+            //Updates an tristated inverter to to the standard cell, normalized to some size
+            static void updateTristate(StdCell* cell_, const String& name_, double normalized_size_);            
+
+            //Helper functions
+            //Returns the width of NMOS transistors, given the NMOS and PMOS stacking
+            static double calculateNmosWidth(const StdCell* cell_, unsigned int max_stacked_nmos_, unsigned int max_stacked_pmos_, unsigned int current_stack_nmos_);
+            //Returns the width of PMOS transistors, given the NMOS and PMOS stacking
+            static double calculatePmosWidth(const StdCell* cell_, unsigned int max_stacked_nmos_, unsigned int max_stacked_pmos_, unsigned int current_stack_pmos_);
+
+    }; // class CellMacros
+} // namespace DSENT
+
+#endif // __DSENT_MODEL_STD_CELLS_CELLMACROS_H__
+