On Wed, 19 Dec 2012, Poul-Henning Kamp wrote:
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In message <20121219221518.e1...@besplex.bde.org>, Bruce Evans writes:
With this format you can specify callouts 68 years into the future
with quarter nanosecond resolution, and you can trivially and
efficiently compare dur_t's with
if (d1 < d2)
This would make a better general format than timevals, timespecs and
of course bintimes :-).
Except that for absolute timescales, we're running out of the 32 bits
integer part.
Except 32 bit time_t works until 2106 if it is unsigned.
Bintimes is a necessary superset of the 32.32 which tries to work
around the necessary but missing int96_t or int128_t[1].
[1] A good addition to C would be a general multi-word integer type
where you could ask for any int%d_t or uint%d_t you cared for, and
have the compiler DTRT. In difference from using a multiword-library,
this would still give these types their natural integer behaviour.
That would be convenient, but bad for efficiency if it were actually
used much.
Bruce
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