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https://issues.apache.org/jira/browse/MATH-1269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14737181#comment-14737181
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Otmar Ertl commented on MATH-1269:
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I have an objection. The patch changes the result of FastMath.exp(709.0001)
from 8.219229343394329E307 to Double.POSITIVE_INFINITY. Although this kind of
error is less harmful than that caused by the bug, I would prefer a more
rigorous solution.
> 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
> Attachments: MATH-1269.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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