[Octave-bug-tracker] [bug #35021] Floating point exception on matrix multiplication

[Melvin Robinson]

URL:
  <http://savannah.gnu.org/bugs/?35021>

                 Summary: Floating point exception on matrix multiplication
                 Project: GNU Octave
            Submitted by: melrobin
            Submitted on: Fri 09 Dec 2011 01:01:33 AM GMT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: melrobin
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.4.3
        Operating System: GNU/Linux

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Details:

I receive a floating point exception when doing a simple matrix multiply:
octave:1> load coredump.mat
octave:2> X'*X
panic: Floating point exception -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Floating point exception (core dumped)

The above are the result of narrowing down the core dump.  Strangely X*X' does
not fail, but X'*X does.  I did try this on the Octave for Windows version
3.2.4 and it did not crash.  

Attached is the core dump file.  Could someone please take a look at this and
tell me what I possibly have done wrong?  I built this version of octave from
source with ATLAS.





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File Attachments:


-------------------------------------------------------
Date: Fri 09 Dec 2011 01:01:33 AM GMT  Name: coredump.mat  Size: 394kB   By:
melrobin

<http://savannah.gnu.org/bugs/download.php?file_id=24550>
-------------------------------------------------------
Date: Fri 09 Dec 2011 01:01:33 AM GMT  Name: octave-core  Size: 263kB   By:
melrobin

<http://savannah.gnu.org/bugs/download.php?file_id=24551>

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