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Because this unordered property is often unexpected, problems can arise when programmers write code that compares floating-point values without considering the semantics of NaN. For example, input validation checks that fail to consider the possibility of a NaN value as input can produce unexpected results. See guideline "NUM11-J. Check floating-point inputs for exceptional values" for additional information.
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="f3a4566384c9cfaf-a585e321-439c4687-a93e8edd-c518b47f12270abef6498290"><ac:plain-text-body><![CDATA[ | [[FindBugs 2008 | AA. Bibliography#FindBugs 08]] | FE: Doomed test for equality to NaN | ]]></ac:plain-text-body></ac:structured-macro> | |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="9523ec7d69d0483c-a88d7ee6-4b154c74-ad9683bc-a01d267a84755269b9dd41c0"><ac:plain-text-body><![CDATA[ | [[JLS 2005 | AA. Bibliography#JLS 05]] | [§4.2.3, "Floating-Point Types, Formats, and Values" | http://java.sun.com/docs/books/jls/third_edition/html/typesValues.html#4.2.3] | ]]></ac:plain-text-body></ac:structured-macro> |
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NUM09-J. Use the strictfp modifier for floating point calculation consistency across platforms 03. Numeric Types and Operations (NUM) NUM11-J. Check floating-point inputs for exceptional values