[13128] in Athena Bugs
sun4 7.7K: matlab
daemon@ATHENA.MIT.EDU (Victor Chudnovsky)
Thu Jan 26 16:34:07 1995
To: bugs@MIT.EDU
Date: Thu, 26 Jan 1995 16:33:57 EST
From: Victor Chudnovsky <vchudnov@MIT.EDU>
System name: hayden-8
Type and version: SPARC/Classic 7.7K
Display type: cgthree
What were you trying to do?
I tried to exponentiate a complex, sparse matrix.
What's wrong:
I get MATLAB segmentation violation message, which tells me to
mail info to TheMathworks.
What should have happened:
I should have gotten a result! I isolated the bug to the
following:
***The following causes the error (I try to use sparse matrix):
>> x = [0+5i, 0-3i,
3i-1, 2i+5]
x =
0 + 5.0000i 0 - 3.0000i
-1.0000 + 3.0000i 5.0000 + 2.0000i
>> y=sparse(x);
>> y^2
------------------------------------------------------------------------
MATLAB segmentation violation detected !!!
------------------------------------------------------------------------
Please report this problem to The MathWorks if you can replicate it.
We need as much information as you can provide! Please include at least
the following:
1. MATLAB version number
2. Platform type, Operating System and Window System versions
3. Sample commands, M-files, or MEX-files that reproduce the error
4. Any other pertinent configuration information
Either E-mail the information to:
support@mathworks.com
or FAX this information to:
508-653-2997.
Try to save your workspace and quit.
>>
***The following does NOT cause the error (I don't try to use sparse matrix):
>> x = [0+5i, 0-3i,
3i-1, 2i+5]
x =
0 + 5.0000i 0 - 3.0000i
-1.0000 + 3.0000i 5.0000 + 2.0000i
>> x^2
ans =
-16.0000 + 3.0000i 21.0000 -15.0000i
-26.0000 + 8.0000i 30.0000 +23.0000i
Please describe any relevant documentation references:
[Please replace this line with your information.]
