[ntp:questions] Leap second to be introduced in June

William Unruh unruh at invalid.ca
Mon Jan 26 16:46:08 UTC 2015

On 2015-01-26, Terje Mathisen <terje.mathisen at tmsw.no> wrote:
> One of the good points about Google's smear is the fact that they use a 
> half cosine to distribute the offset, which means that they have a time 
> function which is both continuous and monotonic, as well as having an 
> infinite number of defined derivatives, i.e. it is maximally smooth.

Nope. The function  1 x<0; -1, x>pi, cos(x) otherwise is continuous and
its first derivative is continuous, but its second derivative is not,
and its third does not exist at x=0 and pi.  It is NOT maximally smooth.


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