[Octave-bug-tracker] [bug #49576] ** On entry to ZLASCL parameter number 4 had an illegal value

[Rik]

Update of bug #49576 (project octave):

                  Status:                    None => Fixed                  

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Follow-up Comment #1:

Under the soon to be released 4.2.0, I get the following warning


warning: matrix singular to machine precision
warning: called from
    func541 at line 74 column 8
    No541 at line 82 column 5


Line 74 is


    Fx = ((X / (log10(X - 1).^4)) - 3) ;


This shows you are trying to divide a matrix by another matrix.  Did you mean
to use the operator './' instead which would divide each entry in X instead?

My guess is that you have something wrong in the code, rather than a problem
with Octave itself.  You can use the debugger to step through your code to see
what is happening.

Try


dbstop No541
No541
dbstep


Keep hitting return to step through the code line by line.  You can print out
variables just by typing their name.  



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