Fri, 30 Dec 2016 18:02:27 +0100 | haftmann | more facts on sgn, abs | changeset | files |
Fri, 30 Dec 2016 18:02:27 +0100 | haftmann | dropped slightly outdated comment | changeset | files |
Fri, 30 Dec 2016 20:43:40 +0100 | wenzelm | merged | changeset | files |