On 5/25/07, Andrew Welch <andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com>
wrote:
Running that gave me 7 - when the check digit should be 3 shouldn't
it? You don't appear to be doing the mod 10 calculations correctly
(according to the steps on wikipedia) - you do the summing, mod 10 it,
take that from 10 and then mod 10 it again.
I hope we are testing different things then. When I copy my code out
of my email and into two new files it works well. Also with your
<upc>036000291452</upc> example.
My code tests if a UPC is correct based on the checksum, if it is,
nothing is returned, if it is not, "UPC is not legal" is returned.
Cheers,
Jesper Tverskov,
http://www.xmlplease.com/xslt
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