PATCH] Improve performance of memmem

[Wilco Dijkstra]

Hi,

Corinna Vinschen wrote:
> On Dec 18 14:32, Eric Blake wrote:

>> There's also the fact that:
>> 
>> sizeof (int)
>> 
>> has to use parenthesis; grepping for the use of () is tricky if you don't
>> filter out the uses that are for types rather than for expressions (but I
>> _do_ prefer sizeof expression over sizeof (type), which is why I prefer
>> avoiding the () to make it easier to use grep to tell the two apart).
>
> Not a fixed rule since, afaik, BSD code always uses parens in sizeof
> expressions.  Apart from that I think it's a good idea to use
>
>  sizeof (type) 
>
> vs.
>
>   sizeof var
>
> but again, there's no strong rule.

Indeed, and in actual expressions I think it would be better to write:

sizeof (var) + 1

rather than

sizeof var + 1

and assuming everybody knows the C operator precedence table...

Cheers,
Wilco