some yalapack fixes and test tryouts

[Jutho]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/yalapack.jl	0.00%	13 Missing ⚠️

Files with missing lines	Coverage Δ
src/yalapack.jl	64.46% <0.00%> (+1.29%)	⬆️

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[Jutho]

@kshyatt , rescaling the eigenvalue distribution by a factor of 10 seems to solve the AD chainrules problems (for now) 🥳 .

[lkdvos]

Out of curiosity, did you find these YALAPACK bugs through the new JET report? Otherwise we might have to also hunt for some extra test coverage at some point

[Jutho]

Yes this is based on the new JET reports 😄 . However, it has issues with the pattern

if condition
    new_variable = 
else
    # no declaration/definition of new_variable
end
# more code
if same_condition_as_before
    do_something(new_variable)
end

And there also seem to be some compatibility issues with Julia LTS and newest JET.

[Jutho]

Testing for all possible error messages is really a nuisance. Also, if there is a mistake in there, you will still get an error, only a less informative one 😄 .