proost commented on code in PR #734:
URL: https://github.com/apache/datasketches-java/pull/734#discussion_r3245460164


##########
src/main/java/org/apache/datasketches/req/ReqSerDe.java:
##########
@@ -204,11 +203,17 @@ static final Compactor extractCompactor(final 
PositionalSegment posSeg, final bo
     final int count = posSeg.getInt();
     final float[] arr = new float[count];
     posSeg.getFloatArray(arr, 0, count);
-    float minItem = Float.MAX_VALUE;
-    float maxItem = Float.MIN_VALUE;
+    float minItem = Float.NaN;
+    float maxItem = Float.NaN;
     for (int i = 0; i < count; i++) {
-      minItem = min(minItem, arr[i]);
-      maxItem = max(maxItem, arr[i]);
+      final float item = arr[i];
+      if (Float.isNaN(minItem)) {
+        minItem = item;
+        maxItem = item;
+      } else {
+        if (item < minItem) { minItem = item; }
+        if (item > maxItem) { maxItem = item; }
+      }

Review Comment:
   fixed it to follow the code.



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