[Octave-bug-tracker] [bug #56037] qp exits with an indexing error for a specific input with OpenBLAS

[Rik]

Follow-up Comment #16, bug #56037 (project octave):

It's a small point, but in the test script try1.m the order of output
arguments is incorrect.  "info" and "obj" (value of objective function at
final solution) should be reversed.

It should read


[x,obj,info,lambda] = qp([],p,q,a,b,lb,ub)


Apparently I am using reference BLAS because I also get a final value for the
objective function of 0.5625.  This is the case *even* when I start very close
to the other solution.


[x,obj,info,lambda] = qp([0.5 0 0.51 0 0 0 0 0],p,q,a,b,lb,ub)


I would suggest inspecting the variables before and after line 413


    [x, lambda, info, iter] = __qp__ (x0, H, q, A, b, Ain, bin, maxit);


when using a working and a non-working BLAS library.



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