Wiki editor request - Mailing list pgsql-www

Hi,

I would like editor access to the wiki, my username is mglauser and I would like to modify https://wiki.postgresql.org/wiki/Luhn_algorithm.

The current snippet uses

ceil(log( $1 ))::integer - 1

which calculates the wrong number of digits for numbers like 1, 10, 1000, ...
I would propose to change it to

floor(log( $1 ))::integer

regards
Marco