fix: unexpected division by a zero-length vector in stddeviation

showwin · Nov 11, 2023 · c5e9ac7 · c5e9ac7
1 parent f5933ae
commit c5e9ac7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/speedtest/request.go b/speedtest/request.go
@@ -387,6 +387,9 @@ func checkSum(data []byte) uint16 {
 }
 
 func StandardDeviation(vector []int64) (mean, variance, stdDev, min, max int64) {
+	if len(vector) == 0 {
+		return
+	}
 	var sumNum, accumulate int64
 	min = math.MaxInt64
 	max = math.MinInt64