ISBN
John Ioannidis - Altair
ji at corto.inria.fr
Wed Feb 1 01:04:14 AEST 1989
In article <884 at amethyst.ma.arizona.edu> rsm at amethyst.ma.arizona.edu (Robert Maier) writes:
>with a weighted mod 11 checksum. (The mysterious "X" in the checksum
>field, which one occasionally encounters, means 11.)
I know I'm nitpicking, but X means 10, not 11. (It's base ELEVEN, how can
you have a DIGIT for ELEVEN? And what would have happened to the digit
for TEN anyway?) Aren't we unix-wizards supposed to be able to do
base-N arithmetic, forall N? :-)
By the way, isn't X a great choice for a digit for TEN? after all,
that's what the roman numeral X stands for!!!!
I guess this discussion no longer belongs to comp.unix.wizards!
/ji
#include <appropriate disclaimers>
In-Real-Life: John Ioannidis
E-Mail-To: <ji at cs.columbia.edu> (preferred), or <ji at walkuere.altair.fr>
P-Mail-To: GIP-Altair, Dom de Voluceau BP105, Rocquencourt 78153 Le Chesnay, FR
V-Mail-To: +33 1 39635227, +33 1 39635417
... It's all greek to me
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