Fix clktreedelay crash

src/cts/src/LatencyBalancer.cpp

@@ -199,7 +199,10 @@ void LatencyBalancer::buildGraph(odb::dbNet* clkInputNet)
                     0.0, sta::RiseFall::fall(), sta::MinMax::max());
 
                 if (rise != 0 || fall != 0) {
-                  insDelay = (rise + fall) / 2.0;
+                  insDelay = (rise + fall);
+                  if (rise != 0 && fall != 0) {
+                    insDelay /= 2.0;
+                  }
                 }
               }
             }
@@ -341,7 +344,10 @@ void LatencyBalancer::computeSinkArrivalRecur(odb::dbNet* topClokcNet,
                   0.0, sta::RiseFall::fall(), sta::MinMax::max());
 
               if (rise != 0 || fall != 0) {
-                insDelay = (rise + fall) / 2.0;
+                insDelay = (rise + fall);
+                if (rise != 0 && fall != 0) {
+                  insDelay /= 2.0;
+                }
               }
             }
           }

src/cts/src/TritonCTS.cpp

@@ -2203,7 +2203,10 @@ double TritonCTS::computeInsertionDelay(const std::string& name,
       if (rise != 0 || fall != 0) {
         // use average of max rise and max fall
         // TODO: do we need to look at min insertion delays?
-        double delayPerSec = (rise + fall) / 2.0;
+        double delayPerSec = (rise + fall);
+        if (rise != 0 && fall != 0) {
+          delayPerSec /= 2.0;
+        }
         // convert delay to length because HTree uses lengths
         sta::Scene* corner = openSta_->cmdScene();
         double capPerMicron

src/gui/src/clockWidget.cpp

@@ -1338,9 +1338,9 @@ ClockNodeGraphicsViewItem* ClockTreeView::addLeafToScene(
               0.0, sta::RiseFall::rise(), sta::MinMax::max());
           const float fall = lib_port->clkTreeDelay(
               0.0, sta::RiseFall::fall(), sta::MinMax::max());
-
-          if (rise != 0 || fall != 0) {
-            ins_delay = (rise + fall) / 2.0;
+          ins_delay = (rise + fall);
+          if (rise != 0 && fall != 0) {
+            ins_delay /= 2.0;
           }
         }
       }