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[Octave-bug-tracker] [bug #40436] median no longer passes make check
From: |
Mike Miller |
Subject: |
[Octave-bug-tracker] [bug #40436] median no longer passes make check |
Date: |
Sat, 02 Nov 2013 23:15:17 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36 |
Follow-up Comment #26, bug #40436 (project octave):
I've traced this down to liboctave Array::nth_element, here's an example using
the call to nth_element that the failing median test case makes. It does look
like uninitialized memory, because it's random which element of this result is
wrong, and it doesn't happen for me every time.
octave-cli:1> b = rand (3, 4, 6, 5);
octave-cli:2> tmp = nth_element (b, 3:4, 3)
tmp =
ans(:,:,1,1) =
0.72585 0.35493 0.89880 0.37920
0.75690 0.62664 0.54848 0.12803
0.38214 0.57314 0.23438 0.86337
ans(:,:,2,1) =
0.90676 0.63536 0.92257 0.53978
0.79579 0.73971 0.73077 0.68045
0.67474 0.64598 0.59156 0.95027
ans(:,:,1,2) =
-1.4411e+296 2.5586e-01 4.0583e-01 3.5271e-01
4.8441e-01 3.8306e-01 4.3900e-01 2.4635e-01
3.7203e-01 3.5613e-01 6.8720e-01 -7.4608e+232
ans(:,:,2,2) =
-3.2079e+176 2.5827e-01 5.8781e-01 6.4392e-01
6.6424e-01 5.7252e-01 5.2495e-01 3.6968e-01
5.1522e-01 4.7913e-01 8.9407e-01 -1.3622e-138
ans(:,:,1,3) =
0.46609 0.48197 0.47079 0.35431
0.36301 0.31437 0.54804 0.62638
0.40946 0.48275 0.61334 0.19517
ans(:,:,2,3) =
0.70109 0.56286 0.69651 0.44498
0.54481 0.39687 0.65335 0.75202
0.83503 0.61924 0.90139 0.72982
ans(:,:,1,4) =
0.51566 0.17927 0.60041 0.44344
0.56499 0.00000 0.50164 0.21559
0.21606 0.26750 0.39789 0.49834
ans(:,:,2,4) =
0.55074 0.18725 0.61739 0.61690
0.56823 0.00000 0.86750 0.34780
0.34628 0.39065 0.41223 0.54986
ans(:,:,1,5) =
0.22879 0.11877 0.34887 0.64783
0.50557 0.43964 0.00000 0.44355
0.59332 0.67293 0.55430 0.36468
ans(:,:,2,5) =
0.56224 0.54101 0.51298 0.68682
0.57307 0.51974 0.21241 0.61531
0.59603 0.74638 0.82469 0.50562
_______________________________________________________
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<http://savannah.gnu.org/bugs/?40436>
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- [Octave-bug-tracker] [bug #40436] median no longer passes make check, (continued)
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/01
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Mike Miller, 2013/11/01
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Rik, 2013/11/02
- Message not available
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Rik, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Rik, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check,
Mike Miller <=
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Mike Miller, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Mike Miller, 2013/11/02
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Rik, 2013/11/03
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Mike Miller, 2013/11/03
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Michael Godfrey, 2013/11/03
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Mike Miller, 2013/11/03
- [Octave-bug-tracker] [bug #40436] median no longer passes make check, Rik, 2013/11/03