[
https://issues.apache.org/jira/browse/MATH-1269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14737436#comment-14737436
]
Otmar Ertl commented on MATH-1269:
----------------------------------
In my opinion simply changing NaNs to infinity can only be a short-term
solution. Such a transformation at the end of this function is like admitting
that we do not really know how our code works. This is not acceptable for such
an essential function as the exponential function.
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
