tree 1d098889df72fcc577f39f2c9d5bdaf8db5ca14a
parent 5d5666fba6205b84b49581d2c78cc1d392104698
author Benno Schulenberg <bensberg@justemail.net> 1484331916 +0100
committer Benno Schulenberg <bensberg@justemail.net> 1484332412 +0100

tweaks: use a subtraction instead of a counter

And return a better value, so that less calculation is needed.