From: Arjan van de Ven <[email protected]>
Date: Wed, 11 Jan 2006 09:13:11 +0100
> > The first suggestion isn't considered ugly, and the best form is:
> >
> > if (ih->frag_off & __constant_htons(IP_OFFSET))
>
> why this __constant_htons and not just plain htons ??
> htons() gets auto-remapped to that anyway via the builtin "is this a
> constant" thing...... and to be honest htons() is more readable.
You're right.
We use the __constant_*() things for structure initialization
which needs to be compile time.
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