Anthony Maidment created LANG-1541:
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Summary: ArrayUtils.contains() fails to handle Double.NaN
Key: LANG-1541
URL: https://issues.apache.org/jira/browse/LANG-1541
Project: Commons Lang
Issue Type: Bug
Components: lang.*
Affects Versions: 3.10, 3.7
Reporter: Anthony Maidment
ArrayUtils.contains(double[], double) does not handle Double.NaN correctly.
That is, ArrayUtils.contains() returns false, even if the given array contains
Double.NaN.
For example, consider the following
{code:java}
double[] a = new double[]{Double.NEGATIVE_INFINITY, Double.NaN,
Double.POSITIVE_INFINITY};
System.out.println(ArrayUtils.contains(a, Double.POSITIVE_INFINITY)); // true
System.out.println(ArrayUtils.contains(a, Double.NEGATIVE_INFINITY)); // true
System.out.println(ArrayUtils.contains(a, Double.NaN)); // false ?
{code}
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