Re: Use of C99 int types

From: Dag Arne Osvik
Date: Mon Apr 04 2005 - 03:43:28 EST


Herbert Xu wrote:

Dag Arne Osvik <da@xxxxxxxx> wrote:


... and with such name 99% will assume (at least at the first reading)
that it _is_ 32bits. We have more than enough portability bugs as it
is, no need to invite more by bad names.


Agreed. The way I see it there are two reasonable options. One is to just use u32, which is always correct but sacrifices speed (at least with the current gcc). The other is to introduce C99 types, which Linus doesn't seem to object to when they are kept away from interfaces (http://infocenter.guardiandigital.com/archive/linux-kernel/2004/Dec/0117.html).



There is a third option which has already been pointed out before:

Use unsigned long.



Yes, as Kulewski pointed out, unsigned long is at least 32 bits wide and therefore correct. Whether it's also fastest is less of a concern, but it is so for at least the x86* architectures. So, sure, I'll use it.

Cheers all,

--
Dag Arne

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/