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https://issues.apache.org/jira/browse/PDFBOX-711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13033523#comment-13033523
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Sergey Vladimirov commented on PDFBOX-711:
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Still present in 1.6.0 trunk. / Revision 1.70 / line 664
http://svn.apache.org/repos/asf/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/util/PDFTextStripper.java
Reopen?
> Findbugs: Bug: Doomed test for equality to NaN PDFTextStripper.java
> -------------------------------------------------------------------
>
> Key: PDFBOX-711
> URL: https://issues.apache.org/jira/browse/PDFBOX-711
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 1.1.0
> Reporter: [email protected]
> Fix For: 1.2.0
>
>
> org.apache.pdfbox.util.PDFTextStripper.java
> if ((wordSpacing == 0) || (wordSpacing == Float.NaN))
> (wordSpacing == Float.NaN) always fails, should use the method to test the
> value.
> if ((wordSpacing == 0) || Float.isNaN(wordSpacing )
> Findbugs Description: Bug: Doomed test for equality to NaN
> Pattern id: FE_TEST_IF_EQUAL_TO_NOT_A_NUMBER, type: FE, category: CORRECTNESS
> This code checks to see if a floating point value is equal to the special Not
> A Number value (e.g., if (x == Double.NaN)). However, because of the special
> semantics of NaN, no value is equal to Nan, including NaN. Thus, x ==
> Double.NaN always evaluates to false. To check to see if a value contained in
> x is the special Not A Number value, use Double.isNaN(x) (or Float.isNaN(x)
> if x is floating point precision).
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