[Octave-bug-tracker] [bug #63384] [MXE Octave] Error for "inv" with default branch

[Markus Mützel]

Follow-up Comment #8, bug #63384 (project octave):

I downloaded the .7z archive from https://buildbot.octave.space/#/download and
extracted it locally.

The test is also failing with reference LAPACK:

>> version -blas
ans = unknown or reference BLAS
>> version -lapack
ans = Linear Algebra PACKage Version 3.11.0
>> inv (NaN (2,2))
warning: matrix singular to machine precision
ans =

   Inf   Inf
   Inf   Inf


If I'm following the code correctly, the inversion of a double precision,
full, non-complex matrix should be calculated by `Matrix::finverse`:
https://hg.savannah.gnu.org/hgweb/octave/file/288a917d728e/liboctave/array/dMatrix.cc#l550

Maybe, a regression in LAPACK 3.11?



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