[r6rs-discuss] Date and time arithmetic library proposal for R7RS large Scheme

[John Cowan]

Ray Dillinger scripsit:

> > On reflection I agree, and the current version (version 17) of
> > TimeCowan now makes (current-posix-second) an integer.  I have updated
> > TimeAdvancedCowan to version 15 to reflect this change.
> 
> I do not understand why this is so.  Can you explain it for me?

Because what happens at the subsecond level is not well-defined,
and insofar as it is well-defined, it is not well-implemented.
Theoretically the repeat happens exactly at the change from 23:60
to 23:61, but NTP does it several fractions of a second later.

-- 
I don't know half of you half as well           John Cowan
as I should like, and I like less than half     cowan at ccil.org
of you half as well as you deserve.             http://www.ccil.org/~cowan
        --Bilbo