[Octave-bug-tracker] [bug #41305] error: eigs: error -14 in dneupd

[Max G.]

Follow-up Comment #11, bug #41305 (project octave):

I did so. The Matrices are identical. But it's getting even more weird.

Error occurs 1 time:

$ octave -q
warning: function /usr/share/octave/packages/statistics-1.2.0/fstat.m shadows
a core library function
octave:1> for it = 136:139 
> rand('state',it); 
> W = rand(200); 
> W(W < 0.9) = 0; 
> W(W != 0) = rand(size(W(W != 0))) - 0.5; 
> eigs(W,1,'LM'); 
> endfor
error: eigs: error -14 in dneupd
octave:1> 
octave:1> w1 = W;
octave:2> rand('state',it); W = rand(200); W(W < 0.9) = 0; W(W != 0) =
rand(size(W(W != 0))) - 0.5; eigs(W,1,'LM');
octave:3> all(all(w1 == W))
ans =  1


Error occurs 2 times:

$ octave -q
warning: function /usr/share/octave/packages/statistics-1.2.0/fstat.m shadows
a core library function
octave:1> for it = 136:139 
> rand('state',it); 
> W = rand(200); 
> W(W < 0.9) = 0; 
> W(W != 0) = rand(size(W(W != 0))) - 0.5; 
> eigs(W,1,'LM'); 
> endfor
error: eigs: error -14 in dneupd
octave:1> 
octave:1> w1 = W;
octave:2> 
octave:2> rand('state',it); 
octave:3> W = rand(200); 
octave:4> W(W < 0.9) = 0; 
octave:5> W(W != 0) = rand(size(W(W != 0))) - 0.5; 
octave:6> eigs(W,1,'LM'); 
error: eigs: error -14 in dneupd
octave:6> 
octave:6> all(all (W == w1))
ans =  1


Please note that both versions differ just in the amount of newlines.

Since some can't reproduce my results:
I use vanilla XUbuntu 13.10 as 32bit version. I installed Octave,
octave-signal and octave-statistics from the standard repositories.

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