[Octave-bug-tracker] [bug #55587] splinefit.m BIST may fail, slightly out of tolerance result

[Mike Miller]

Follow-up Comment #7, bug #55587 (project octave):

I see that this was last discussed and these tests were changed in 2012.

* https://lists.gnu.org/archive/html/octave-maintainers/2012-08/msg00044.html
* https://hg.savannah.gnu.org/hgweb/octave/rev/902a8e27b2a2

The test tolerance was increased from 10⋅eps to only 15⋅eps (while also
using rand instead of randn). Dan suggested at the time to make the tolerance
much larger, between 30⋅eps and 100⋅eps. Ed suggested that the tolerance
should be no less than 10⋅eps⋅norm(y), which is about 25⋅eps for the
random yb vector.

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