#1822 limit(inf+minf) should give und

[Dieter Kaiser]

I think the following limits should all give UND

(%i1) limit(inf+minf);
(%o1) minf + inf

(%i2) limit(x+minf,x,inf);
(%o2) inf

(%i3) limit(x+inf,x,minf);
(%o3) minf

The code of limit is the only place where infinities are handled, but it should be more complete.

Dieter Kaiser

[Barton Willis]

One of these has been fixed:

(%i9) limit(inf+minf);
(%o9)                                 und

(%i10)  limit(x+minf,x,inf);
(%o10)                                inf

(%i11) limit(x+inf,x,minf);
(%o11)                               minf