#2435: lb: add another helper

Author: lifflander

src/vt/vrt/collection/balance/temperedlb/tempered_msgs.h

@@ -78,6 +78,14 @@ struct ClusterInfo {
     }
   }
 
+  void addIntraVolume(bool is_send, double volume) {
+    if (is_send) {
+      intra_send_vol += volume;
+    } else {
+      intra_recv_vol += volume;
+    }
+  }
+
   void addObjEdge(bool is_send, elm::ElementIDStruct obj, double volume) {
     if (is_send) {
       obj_send_vol[obj] += volume;

src/vt/vrt/collection/balance/temperedlb/temperedlb.cc

@@ -670,13 +670,9 @@ void TemperedLB::makeClusterSummaryAddEdges(
 
     if (cluster_objs.find(send_or_recv_obj) != cluster_objs.end()) {
       // intra-cluster edge
-      if (is_send) {
-        info.intra_send_vol += volume;
-      } else {
-        info.intra_recv_vol += volume;
-      }
+      info.addIntraVolume(is_send, volume);
 
-      // iter-cluster
+      // inter-cluster edge
       info.addInterClusterEdge(is_send, shared_id, volume);
     } else if (
       auto it2 = obj_shared_block_.find(send_or_recv_obj);