[openib-general] [PATCH] Avoid truncating to 'long' in ALIGN() macro
Jörn Engel
joern at wohnheim.fh-wedel.de
Sun Nov 26 13:06:12 PST 2006
On Sun, 26 November 2006 12:26:08 -0800, Roland Dreier wrote:
>
> > +#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
> > +#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
>
> Fine by me, but it loses the extra (typeof(x)) cast that Al wanted to
> make sure that the result of ALIGN() is not wider than x.
Not a big deal, is it?
#define ALIGN(x,a) (typeof(x))__ALIGN_MASK(x,(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
Jörn
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