[Octave-bug-tracker] [bug #63277] isfinite returns full array in Matlab for sparse input

[Nicholas Jankowski]

Follow-up Comment #2, bug #63277 (project octave):

the fix was related to this problem identified through the help mailing list:

https://lists.gnu.org/archive/html/help-octave/2022-10/msg00011.html


I'm guessing your input to `glpk` is sparse. Line 507 of `glpk.m` uses:
  if (any (! isfinite (A(:))))
    error ("glpk: The values in A must be finite");
  endif

`isfinite (A(:))` creates a sparse Boolean matrix. However, it is likely not 
sparsely populated which might be the cause for the memory issue.

Does it work if you edit that file and change the above lines to the
following?
  if (any (isinf (A(:))) || any (isnan(A(:))))
    error ("glpk: The values in A must be finite");
  endif



that turned out to solve the problem for that user, and so was pushed as a
potential fix to prevent reoccurrence.


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