[Octave-bug-tracker] [bug #29553] missing arpack: make check segfaults on eigs

[Petr Mikulik]

Follow-up Comment #8, bug #29553 (project octave):

I have found the problem when trying explicitly the test commands in eigs:

n = 20
k = 4
A = sparse ([3:n, 1:n, 1:(n - 2)], [1:(n - 2), 1:n, 3:n], [ones(1, n - 2),
1:n, -ones(1, n - 2)])
d0 = eig (A)

The above code crashes octave in eig(A) if n>=12.
Thus it is a problem of eig() with a larger sparse matrix.

Whatever is the reason for this crash, fntests.m would pass if "testif"
commands are added to each test code block in eigs.cc:
%!testif HAVE_ARPACK
%! n = 20;
%! k = 4;


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