!0

[Dave Hodgkinson]

On 12 Feb 2009, at 16:27, James Laver wrote:

> On Thu, Feb 12, 2009 at 4:03 PM, David Cantrell  
> <david at cantrell.org.uk> wrote:
>> On Thu, Feb 12, 2009 at 03:30:22PM +0000, James Laver wrote:
>>
>>> Although by rights it should be -1 on a twos complement machine.
>>> (For those who remember ones complement based numbers, or even know
>>> they existed).
>>
>> You're confusing logical not with bit-wise not:
>>
>> $ perl -e 'print "".(!0)."\n"'
>> 1
>> $ perl -e 'print "".(~0)."\n"'
>> 4294967295                        <-- 32-bit -1
>> $ perl64 -e 'print "".(~0)."\n"'
>> 18446744073709551615              <-- 64-bit -1
>>
>
> Okay, I may be stretching things a little far for comparatively crap
> humour, but I am aware of the difference.
>
> In any case, it wasn't funny, I'll drop it.



Did you butter its paws first?


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Dave Hodgkinson                                MSN: davehodg at hotmail.com
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