[Octave-bug-tracker] [bug #41116] Incorrect result for sparse LU factorization

[Michael C. Grant]

Follow-up Comment #3, bug #41116 (project octave):

I have confirmed that the three-argument version is also incorrect, but the
four-argument version is correct. I've studied the LU code a bit but I don't
know enough about UMFPACK to figure it out, and I have another project
calling. I'll get back to this when I can, unless someone else does before me.
I would love to see CVX working with Octave 4.0 or earlier; we're very very
close!

load lutest
[LL2,UU2]=lu(x);
x-LL2*UU2
[LL3,UU3,PP3]=lu(x);
x-PP3'*LL3*UU3
[LL4,UU4,PP4,QQ4]=lu(x);
x-PP4'*LL4*UU4*QQ4'




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?41116>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/