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| From: | Dmitri A. Sergatskov |
| Subject: | [Octave-bug-tracker] [bug #60784] Inconsistent behavior for boolean matrix types with matrix functions |
| Date: | Tue, 15 Jun 2021 23:12:48 -0400 (EDT) |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 |
Follow-up Comment #3, bug #60784 (project octave):
And perhaps a somewhat surprising thing is:
octave:11> D=int16(B);
octave:12> whos
Variables visible from the current scope:
variables in scope: top scope
Attr Name Size Bytes Class
==== ==== ==== ===== =====
A 20000x20000 3200000000 double
B 20000x20000 400000000 logical
C 20000x20000 1600000000 single
D 20000x20000 800000000 int16
ans 1x1 8 double
Total is 1600000001 elements using 6000000008 bytes
octave:13> tic; det (D), toc
ans = 0
Elapsed time is 14.9294 seconds.
octave:14>
It appears that int16 gets promoted to double, while single apparently not.
Dmitri.
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