[Octave-bug-tracker] [bug #61319] idivide fails to distinguish between ceil and floor for inputs close to perfect squares

[Gaël Bonithon]

Follow-up Comment #18, bug #61319 (project octave):

Regarding the patch at the `.m` level, to integrate the modification proposed
by @mmuetzel in #12, I think that unfortunately we can't escape a distinction
between scalar and vector for `x` and `y`, which makes the code much bigger.
But I think that any more compact form pays off in computation time.

With this, we go from 100% increase in computation time (first version of the
patch) to about 60%, compared to the current version.

Note that the worst case is in fact when `y` is a scalar and `x` is a vector.
This is already noticeable with the current version, but only for "round",
which is the only case that uses integer arithmetic.

(file #52902)
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Additional Item Attachment:

File name: bug61319-v3.patch              Size:3 KB
    <https://file.savannah.gnu.org/file/bug61319-v3.patch?file_id=52902>



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