PATCH] Improve performance of memmem
Eric Blake
eblake@redhat.com
Wed Dec 19 15:26:00 GMT 2018
On 12/19/18 6:57 AM, Wilco Dijkstra wrote:
> Indeed, and in actual expressions I think it would be better to write:
>
> sizeof (var) + 1
>
> rather than
>
> sizeof var + 1
Or use the commutative rule:
1 + sizeof var
>
> and assuming everybody knows the C operator precedence table...
Indeed, but it's also quite rare to need either (sizeof var) + 1 or
sizeof (var + 1), so the issue doesn't come up much in practice. In
that case, you are right that explicit parens help clarify intent
precisely because it is uncommon.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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