Use 256 instead of 255. Each number represents a byte with 256 possible
values.
   (4$256)#.69 255 248 210
1174403282

   (4$256)#:1174403282
69 255 248 210

On Wed, Apr 22, 2009 at 3:15 PM, Lettow, Kenneth <[email protected]>wrote:

> How do you convert a IP address from dotted quad representation to
> integer and back in J?
>
> I was experimenting with base and antibase, but got stuck.
>
> NB. IP address: 70.0.248.210
>
>   (4$255)#. (70 0 248 210)
> 1160759700
>
>   (4$255)#:1160759700
> 70 0 248 210
>
> So far so good, but
>
>   (4$255)#.69 255 248 210
> 1160759700
>
>   (4$255)#:1160759700
> 70 0 248 210
>
> What am I missing?
>
> Thanks,
>
> Ken
>
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>
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