[LANG-1541] ArrayUtils.contains() fails to handle Double.NaN

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.7, 3.10
• Fix Version/s: 3.12.0
• Component/s: lang.*
• Assignee: Unassigned
• Reporter: Anthony Maidment
• Created: 11/May/20 11:24
• Updated: 15/Nov/20 09:46
• Resolved: 14/Nov/20 21:35

Description

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: 

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 ?

 

 

 

Issue Links

• relates to: LANG-1615 ArrayUtils contains() and indexOf() fails to handle Float.NaN
• links to: [LANG-1541] - ArrayUtils.contains() fails to handle Double.NaN #647