"David S. Miller" <[EMAIL PROTECTED]> said:
> Jonathan Morton writes:
> > >- page_count(page) == (1 + !!page->buffers));
> >
> > Two inversions in a row?
>
> It is the most straightforward way to make a '1' or '0'
> integer from the NULL state of a pointer.
IMVHO, it is clearer to write:
page_count(page) == 1 + (page->buffers != NULL)
At least, the original poster wouldn't have wondered, and I wouldn't have
had to think a bit to find out what it meant... If gcc generates worse code
for this, it should be fixed.
--
Dr. Horst H. von Brand mailto:[EMAIL PROTECTED]
Departamento de Informatica Fono: +56 32 654431
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