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https://issues.apache.org/jira/browse/MATH-1269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14992406#comment-14992406
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Otmar Ertl commented on MATH-1269:
----------------------------------
fixed
3.6: 8aecb842d32464a98eaab722da84902f8126957b
4.0: a94ff90ab6cd2d92ccb2eb1fd7913b4e5256f02b
> FastMath.exp may return NaN for non-NaN arguments
> -------------------------------------------------
>
> Key: MATH-1269
> URL: https://issues.apache.org/jira/browse/MATH-1269
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Otmar Ertl
> Fix For: 4.0, 3.6
>
> Attachments: MATH-1269-fix-tempC-infinity.patch, MATH-1269.patch,
> MATH-1269.patch, MATH-1269_fix_z.patch
>
>
> I have observed that FastMath.exp(709.8125) returns NaN. However, the
> exponential function must never return NaN (if the argument is not NaN). The
> result must always be non-negative or positive infinity.
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