Re: double exclamation (!!) suckage in the kernel

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On Sat, May 26, 2007 at 02:26:11AM +0530, Satyam Sharma wrote:
> also be brave enough to take a C quiz here :-)
> 
> >        what type should x have for !!x to be a valid expression?
> 
> Any integer type (includes pointers)

Er, no...  Pointers are not integer types *and* you can use ! on any
scalar type (including floating ones, even though it's not particulary
useful there).

> >        what will be the type of result?
> 
> int (I guess boolean for C99?)

Actually, ! and comparisons still give int in C99 (and !x is defined as
(x == 0) in all situations).
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