Fixed coverity CID 1619525 issue.

>>>     CID 1619525:           (DIVIDE_BY_ZERO)
>>>     In function call "printProgress", division by expression "this->initial_design_area_" which may be zero has undefined behavior.

Signed-off-by: Jaehyun Kim <[email protected]>

Author: jhkim-pii

src/rsz/src/Rebuffer.cc

@@ -3,6 +3,7 @@
 
 #include "Rebuffer.hh"
 
+#include <limits>
 #include <memory>
 
 #include "BufferMove.hh"
@@ -2009,10 +2010,14 @@ void Rebuffer::printProgress(int iteration,
   if (iteration % print_interval_ == 0 || force || end) {
     const double design_area = resizer_->computeDesignArea();
     const double area_growth = design_area - initial_design_area_;
+    double area_growth_percent = std::numeric_limits<double>::infinity();
+    if (std::abs(initial_design_area_) > 0.0) {
+      area_growth_percent = area_growth / initial_design_area_ * 100.0;
+    }
 
     logger_->report("{: >9s} | {: >+8.1f}% | {: >7d} | {: >8d} | {: >9d}",
                     end ? "final" : std::to_string(iteration),
-                    area_growth / initial_design_area_ * 1e2,
+                    area_growth_percent,
                     removed_count_,
                     inserted_count_,
                     remaining);

src/rsz/src/RecoverPower.cc

@@ -4,6 +4,7 @@
 #include "RecoverPower.hh"
 
 #include <algorithm>
+#include <limits>
 #include <string>
 
 #include "db_sta/dbNetwork.hh"
@@ -470,11 +471,15 @@ void RecoverPower::printProgress(int iteration, bool force, bool end) const
 
     const double design_area = resizer_->computeDesignArea();
     const double area_growth = design_area - initial_design_area_;
+    double area_growth_percent = std::numeric_limits<double>::infinity();
+    if (std::abs(initial_design_area_) > 0.0) {
+      area_growth_percent = area_growth / initial_design_area_ * 100.0;
+    }
 
     logger_->report(
         "{: >9s} | {: >+8.1f}% | {: >8d} | {: >8s} | {}",
         itr_field,
-        area_growth / initial_design_area_ * 1e2,
+        area_growth_percent,
         resize_count_,
         delayAsString(wns, sta_, 3),
         worst_vertex != nullptr ? worst_vertex->name(network_) : "");

src/rsz/src/RepairSetup.cc

@@ -6,6 +6,7 @@
 #include <algorithm>
 #include <cmath>
 #include <cstddef>
+#include <limits>
 #include <memory>
 #include <optional>
 #include <sstream>
@@ -740,6 +741,10 @@ void RepairSetup::printProgress(const int iteration,
 
     const double design_area = resizer_->computeDesignArea();
     const double area_growth = design_area - initial_design_area_;
+    double area_growth_percent = std::numeric_limits<double>::infinity();
+    if (std::abs(initial_design_area_) > 0.0) {
+      area_growth_percent = area_growth / initial_design_area_ * 100.0;
+    }
 
     // This actually prints both committed and pending moves, so the moves could
     // could go down if a pass is rejected and restored by the ECO.
@@ -754,7 +759,7 @@ void RepairSetup::printProgress(const int iteration,
             + resizer_->split_load_move_->numMoves(),
         resizer_->clone_move_->numMoves(),
         resizer_->swap_pins_move_->numMoves(),
-        area_growth / initial_design_area_ * 1e2,
+        area_growth_percent,
         delayAsString(wns, sta_, 3),
         delayAsString(tns, sta_, 1),
         max(0, num_viols),