FreeBSD Most wanted
Chris Pressey
cpressey at catseye.mine.nu
Fri Mar 5 19:17:02 PST 2004
On Sat, 6 Mar 2004 02:55:35 +0100
Rahul Siddharthan <rsidd at online.fr> wrote:
> Daniela wrote:
> > I like doing AI programming, that's numbercrunching most of the time.
> >
> > A compiler can't, for example, know whether you need to have zero returned
> > from the atoi() function when the user entered nonsense. If you don't need to
> > check whether the user has entered a valid number, you can do it *much*
> > faster.
>
> Excellent example. Here you're limited by the speed of the fingers of
> the user who's entering the data, so there's *absolutely no point* in
> optimising the atoi() function in this way. (Or if you're reading from
> the disk, the disk I/O will be the bottleneck, though it's admittedly
> faster than fingers.)
I don't understand your point... atoi() is not an I/O function.
-Chris
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