Avoid redundant computations.

DaddyFlummprutt · Oct 28, 2020 · bb02fad · bb02fad
1 parent 43b77ff
commit bb02fad
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/main/java/org/apache/commons/math4/util/MathArrays.java b/src/main/java/org/apache/commons/math4/util/MathArrays.java
@@ -912,11 +912,12 @@ public static double[] normalizeArray(double[] values, double normalizedSum)
         if (sum == 0) {
             throw new MathArithmeticException(LocalizedFormats.ARRAY_SUMS_TO_ZERO);
         }
+        final double scale = normalizedSum / sum;
         for (int i = 0; i < len; i++) {
             if (Double.isNaN(values[i])) {
                 out[i] = Double.NaN;
             } else {
-                out[i] = values[i] * normalizedSum / sum;
+                out[i] = values[i] * scale;
             }
         }
         return out;