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Direct computation of integer limits in K&R2?

 
 
Joe Wright
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      03-17-2008
CBFalconer wrote:
> Ioannis Vranos wrote:
> ... snip ...
>> OK it is allowed, but is there any existing system where the value
>> ranges of signed int and unsigned int are different?

>
> Yes. Consider a 16 bit system. INT_MAX is 32767. INT_MIN is
> -32768 (or -32767). UINT_MAX is 65536 (UINT_MIN is naturally 0).
> It is allowable to reserve the value that would represent -32768 to
> indicate a special condition, such as uninitialized. Or, for a 1's
> complement machine, the bit pattern for -0 is forbidden.
>

Off by one.. 65536 takes 17 bits. Happy St. Paddy's.

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Joe Wright
"Everything should be made as simple as possible, but not simpler."
--- Albert Einstein ---
 
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