[Octave-bug-tracker] [bug #47415] out of memory negating a permutation matrix

[Lachlan Andrew]

Update of bug #47415 (project octave):

                 Summary: out of memory with factorized sparse matrix using
mldivide => out of memory negating a permutation matrix

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Follow-up Comment #10:

I've changed the title (from "out of memory with factorized sparse matrix
using mldivide") to reflect jwe's explanation.

IMHO, negating a permutation matrix should give a sparse matrix. 
Distinguishing between 0 and -0 is not mathematically sound in the first pace,
and not worth forcing a sparse matrix to be full.

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