[Octave-bug-tracker] [bug #47236] output of eigs() with 'sa' option differs from Matlab

[Doug Stewart]

Follow-up Comment #7, bug #47236 (project octave):


d =

Diagonal Matrix

   2.5453e-02            0            0
            0   2.0710e-02            0
            0            0  -3.2499e-15

>> lapsh1

m =

Diagonal Matrix

  -3.5256        0        0
        0  -3.5358        0
        0        0  -3.9126
from m   smallest number is top left but with d the smallest number is at
bottom right.


here is one more example of d

d =

Diagonal Matrix

   2.5453e-02            0            0
            0   2.0710e-02            0
            0            0   4.4038e-15



     "sa"
          Smallest Algebraic (valid only for real symmetric problems).

matlab always does it with smallest at top left. That is what I was told. and
that is what the OP was expecting and the program was expecting.




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