This is actually correct. It's what APL is supposed to do. Domain of division is extended to include 0÷0, but not any other numbers divided by zero.
-k On Fri, Apr 17, 2020 at 10:26:09PM +0200, Hans-Peter Sorge wrote: > Hi, > > I just noted some inconsistencies: > > 0÷0 > 1 > > 0.1÷0 > DOMAIN ERROR > 0.1÷0 > ^ ^ > > 0.1÷0 1 > DOMAIN ERROR > 0.1÷0 1 > ^ ^ > > 0÷0 1 > 1 0 > > 1 0 ÷ 0 > DOMAIN ERROR > 1 0÷0 > ^ ^ > > 0 0 ÷ 0 > 1 1 > > 0 ÷ 0 0 > 1 1 > > 1 ÷ 0 0 > DOMAIN ERROR > 1÷0 0 > ^^ > Regards > Hans-Peter