OutputWaveforms init vdd

Signed-off-by: James Cherry <[email protected]>

include/sta/Liberty.hh

@@ -319,6 +319,7 @@ public:
   DriverWaveform *findDriverWaveform(const char *name);
   DriverWaveform *driverWaveformDefault() { return driver_waveform_default_; }
   void addDriverWaveform(DriverWaveform *driver_waveform);
+  void ensureVoltageWaveforms();
 
 protected:
   float degradeWireSlew(const TableModel *model,
@@ -370,6 +371,7 @@ protected:
   DriverWaveformMap driver_waveform_map_;
   // Unnamed driver waveform.
   DriverWaveform *driver_waveform_default_;
+  bool have_voltage_waveforms_;
 
   static constexpr float input_threshold_default_ = .5;
   static constexpr float output_threshold_default_ = .5;

include/sta/TableModel.hh

@@ -487,8 +487,7 @@ public:
                   TableAxisPtr cap_axis,
                   const RiseFall *rf,
                   Table1Seq &current_waveforms,
-                  Table1 *ref_times,
-                  LibertyLibrary *library);
+                  Table1 *ref_times);
   ~OutputWaveforms();
   const RiseFall *rf() const { return rf_; }
   const TableAxis *slewAxis() const { return slew_axis_.get(); }
@@ -510,10 +509,10 @@ public:
                        float cap,
                        float volt);
   float referenceTime(float slew);
+  void makeVoltageWaveforms(float vdd);
   static bool checkAxes(const TableTemplate *tbl_template);
 
 private:
-  void makeWaveforms();
   void findVoltages(size_t wave_index,
                     float cap);
   float waveformValue(float slew,