ccs bounds check

Signed-off-by: James Cherry <cherry@parallaxsw.com>

include/sta/TableModel.hh

@@ -462,6 +462,7 @@ public:
   const char *variableString() const;
   const Unit *unit(const Units *units);
   size_t size() const { return values_->size(); }
+  bool inBounds(float value) const;
   float axisValue(size_t index) const { return (*values_)[index]; }
   // Find the index for value such that axis[index] <= value < axis[index+1].
   size_t findAxisIndex(float value) const;
@@ -505,6 +506,8 @@ public:
                   Table1 *ref_times);
   ~OutputWaveforms();
   const RiseFall *rf() const { return rf_; }
+  bool inBounds(float in_slew,
+                float load_cap) const;
   Table1 voltageWaveform(float in_slew,
                          float load_cap);
   float voltageTime(float in_slew,

liberty/TableModel.cc

@@ -1437,6 +1437,15 @@ TableAxis::~TableAxis()
   delete values_;
 }
 
+bool
+TableAxis::inBounds(float value) const
+{
+  size_t size = values_->size();
+  return size > 1
+    && value >= (*values_)[0]
+    && value <= (*values_)[size - 1];
+}
+
 // Bisection search.
 size_t
 TableAxis::findAxisIndex(float value) const
@@ -1613,6 +1622,14 @@ OutputWaveforms::checkAxes(TableTemplate *tbl_template)
           && axis3->variable() == TableAxisVariable::time);
 }
 
+bool
+OutputWaveforms::inBounds(float in_slew,
+                          float load_cap) const
+{
+  return slew_axis_->inBounds(in_slew)
+    && cap_axis_->inBounds(load_cap);
+}
+
 const Table1 *
 OutputWaveforms::currentWaveform(float slew,
                                  float cap)