Dear Florent,
thank you for striving to clearly disentangle and present the
issue below.
That is a nice "role model" way of approaching such topics!
> Florent Angly
> on Fri, 27 Jan 2017 10:24:39 +0100 writes:
> Martin, I agree with you that +0 and -0 should generally be treated
Martin, I agree with you that +0 and -0 should generally be treated as
equal, and R does a fine job in this respect. The Wikipedia article on
signed zero (https://en.wikipedia.org/wiki/Signed_zero) echoes this
view but also highlights that +0 and -0 can be treated differently in
particular situatio
In addition, signed zeroes only exist for floating point numbers - the
bit patterns for as.integer(0) and as.integer(-0) are identical.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Jan 26, 2017 at 1:53 AM, Martin Maechler
wrote:
>> Florent Angly
>> on Wed, 25 Jan 2017 16:31:
> Florent Angly
> on Wed, 25 Jan 2017 16:31:45 +0100 writes:
> Hi all,
> The documentation for head() and tail() describes the behavior of
> these generic functions when n is strictly positive (n > 0) and
> strictly negative (n < 0). How these functions work when given
Hi all,
The documentation for head() and tail() describes the behavior of
these generic functions when n is strictly positive (n > 0) and
strictly negative (n < 0). How these functions work when given a zero
value is not defined.
Both GNU command-line utilities head and tail behave differently wi
