Jon Rafkind wrote:
On 11/12/2010 03:58 PM, Neil Toronto wrote:
Eli Barzilay wrote:
5 minutes ago, Jakub Piotr Cłapa wrote:
And in the case this is still not clear ;) the inexact part is not
only about formal inexactnes but about limited timer resolution as
well. Despite the CPU clock ticking more than once each nanosecond
the procesor and OS does not really count the time this accurately.
On normal OSes I would expect microsecond accuracy at best (but that
is a guess; I didn't measure).
Easy to do, just run
(- (current-inexact-milliseconds) (current-inexact-milliseconds))
a few times.
Looping to collect 1000 differences, I consistently get a minimum of
0.0009765625 milliseconds = 0.9765625 microseconds. Nice guess, Jakub.
I also get negative numbers, which is very weird.
well.. left to right evaluation..
D'oh!
Neil T
_________________________________________________
For list-related administrative tasks:
http://lists.racket-lang.org/listinfo/users
