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[Octave-bug-tracker] [bug #33932] Permutation matrices of class 'single'
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From: |
Rik |
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Subject: |
[Octave-bug-tracker] [bug #33932] Permutation matrices of class 'single' are unsupported |
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Date: |
Mon, 28 Aug 2017 16:17:28 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
Follow-up Comment #4, bug #33932 (project octave):
Can anyone with access to Matlab verify the class of P? If not, we can post
on Octave-Maintainer's list. Sample code:
[L,U,P] = lu (single (magic (4)));
class (P)
Also, even if they do return a single matrix, do we care enough to fix this?
Memory isn't a concern. The LU decomposition results in
L * U = P * A
If A is single, L and U will be single, and a double matrix P multiplied by a
single matrix A will result in an object of class single.
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