[R] round() and negative digits

[Duncan Murdoch]

On 11-10-08 5:32 PM, Rolf Turner wrote:
> On 09/10/11 00:18, Duncan Murdoch wrote:
>> On 11-10-07 5:26 PM, Carl Witthoft wrote:
>>> Just wondering here -- I tested and found to my delight that
>>>
>>> %  round(325.4,-2)
>>> [1] 300
>>>
>>> gave me exactly what I would have expected (and wanted).  Since it's not
>>> explicitly mentioned in the documentation that negative 'digits' is
>>> allowed, I just wanted to ask whether this behavior is intentional or a
>>> happy turn of events.  I'm always paranoid that something not explicitly
>>> documented might disappear in future revisons.
>>>
>>
>> It is intentional, and one of the regression tests confirms that it's
>> there, so it won't disappear by mistake, and would be very unlikely to
>> disappear intentionally.
>
> Uh, wouldn't it be *nice* to mention this --- not completely obvious ---
> capability
> in the help file?

If we told you all of R's secrets, we'd have to kill you.

Duncan Murdoch