|
| From: | anonymous |
| Subject: | [Octave-bug-tracker] [bug #49690] inv(inf) behaves differently from inf^-1, 1/inf, inf\1 |
| Date: | Fri, 25 Nov 2016 03:50:24 +0000 (UTC) |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 |
Follow-up Comment #2, bug #49690 (project octave):
Besides, inv() returns incorrect result only for scalar Inf.
All of them return correct results for matrices:
octave:1> inv(diag([inf inf]))
ans =
Diagonal Matrix
0 0
0 0
octave:2> inv([inf 0;0 inf])
warning: matrix singular to machine precision
ans =
0 0
0 0
octave:3> diag([inf inf])^-1
ans =
Diagonal Matrix
0 0
0 0
octave:4> [inf 0;0 inf]^-1
ans =
0 0
0 0
octave:5> diag([inf inf])\eye(2)
ans =
Diagonal Matrix
0 0
0 0
octave:6> [inf 0;0 inf]\eye(2)
warning: matrix singular to machine precision
ans =
0 0
0 0
octave:7> eye(2)/diag([inf inf])
ans =
Diagonal Matrix
0 0
0 0
octave:8> eye(2)/[inf 0;0 inf]
warning: matrix singular to machine precision
ans =
0 0
0 0
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