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Avoid redundant computations.

This commit is contained in:
Gilles Sadowski 2020-10-28 03:21:33 +01:00
parent 43b77ffabb
commit bb02fad3e3
1 changed files with 2 additions and 1 deletions
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3
src/main/java/org/apache/commons/math4/util/MathArrays.java
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@ -912,11 +912,12 @@ public class MathArrays {
if (sum == 0) { if (sum == 0) {
throw new MathArithmeticException(LocalizedFormats.ARRAY_SUMS_TO_ZERO); throw new MathArithmeticException(LocalizedFormats.ARRAY_SUMS_TO_ZERO);
} }
final double scale = normalizedSum / sum;
for (int i = 0; i < len; i++) { for (int i = 0; i < len; i++) {
if (Double.isNaN(values[i])) { if (Double.isNaN(values[i])) {
out[i] = Double.NaN; out[i] = Double.NaN;
} else { } else {
out[i] = values[i] * normalizedSum / sum; out[i] = values[i] * scale;
} }
} }
return out; return out;