[Octave-bug-tracker] [bug #32364] problem multiplying permutation and sparse matrices

[David Bateman]

Follow-up Comment #2, bug #32364 (project octave):

Strictly speaking the sparse code doesn't need to make the assumption that
the row indexes are in order, however doing so makes some code simpler, while
making other code more difficult. I made the choice when I started writing the
sparse code to assume that the row indexes were ordered and all of the sparse
code would have to be gone over to remove this assumption. So probably the
best thing to do here is to modify PM * SM so that it to orders the row
indexes. Fortunately, by its nature SM * PM already does so.

Here is a patch that I think does the right thing but its received little
testing

D.


(file #22632)
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Additional Item Attachment:

File name: patch.perm                     Size:1 KB


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