Avoid redundant computations.
diff --git a/src/main/java/org/apache/commons/math4/util/MathArrays.java b/src/main/java/org/apache/commons/math4/util/MathArrays.java
index a7488e2..864dbcf 100644
--- 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 @@
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;
