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Otmar Ertl commented on MATH-1269: ---------------------------------- 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)