On Wed, Nov 20, 2002 at 12:11:12PM -0500, Chris Friesen wrote:
> Steven French wrote:
> > As long as unsigned char can never go above 255 the code should
> >work. It might have be more readable if it were defined as a __u8
> >instead of an unsigned char.
> Technically there is nothing that guarantees that an unsigned char is <=
> 8 bytes in size (although in practice it often is the case).
> __u8 would definately be the way to go.
I believe C99 defines 'char' as the smallest addressable unit of
memory. Meaning -- it would be difficult to define 'u8' where 'char'
was larger than 8 bits. This is why the wchar_t stuff came about.
Is is doubtful than any new hardware would be made so difficult to
port code to. Older hardware that used 6 bit bytes (among other sizes)
should be obsoleted.
That being said... the code should probably check the size, and allow
the host compiler to choose whether or not to optimize the check away.
mark
-- mark@mielke.cc/markm@ncf.ca/markm@nortelnetworks.com __________________________ . . _ ._ . . .__ . . ._. .__ . . . .__ | Neighbourhood Coder |\/| |_| |_| |/ |_ |\/| | |_ | |/ |_ | | | | | | \ | \ |__ . | | .|. |__ |__ | \ |__ | Ottawa, Ontario, CanadaOne ring to rule them all, one ring to find them, one ring to bring them all and in the darkness bind them...
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:32 EST