#10795: Fix and upgrade double dense matrix QR decomposition
-------------------------------+--------------------------------------------
Reporter: rbeezer | Owner: jason, was
Type: defect | Status: new
Priority: minor | Milestone: sage-4.7.2
Component: linear algebra | Resolution:
Keywords: beginner | Work_issues:
Upstream: N/A | Reviewer: Martin Raum
Author: Rob Beezer | Merged:
Dependencies: |
-------------------------------+--------------------------------------------
Changes (by jdemeyer):
* status: closed => new
* resolution: fixed =>
* merged: sage-4.7.2.alpha2 =>
Comment:
On various systems, there are doctest failures:
hawk (OpenSolaris 06/2009 i86pc Xeon W3580):
{{{
**********************************************************************
File
"/export/home/buildbot/build/sage/hawk-1/hawk_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1766:
sage: Q
Expected:
[ -0.359210604054 0.569326179705 0.368048420509 0.641385845805]
[ 0.179605302027 -0.144590775798 0.925041158846 -0.301884576418]
[ 0.179605302027 -0.704880032016 0.0774617736597 0.681825307224]
[ 0.898026510134 0.397624633445 -0.0532812182975 0.180566192161]
Got:
[-0.359210604054 0.569326179705 0.409076682956 0.616028985113]
[ 0.179605302027 -0.144590775798 -0.683704756325 0.69237507842]
[ 0.179605302027 -0.704880032016 0.575201135981 0.374205463771]
[ 0.898026510134 0.397624633445 0.185331397251 0.0330954856071]
**********************************************************************
File
"/export/home/buildbot/build/sage/hawk-1/hawk_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1771:
sage: R
Expected:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 -9.93013661299e-16]
[ 0 0 0]
Got:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 -4.4408920985e-16]
[ 0 0 0]
**********************************************************************
}}}
bsd (OS X 10.8.0 x86_64) 64-bit:
{{{
**********************************************************************
File
"/Users/buildbot/build/sage/bsd-1/bsd_64_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1766:
sage: Q
Expected:
[ -0.359210604054 0.569326179705 0.368048420509 0.641385845805]
[ 0.179605302027 -0.144590775798 0.925041158846 -0.301884576418]
[ 0.179605302027 -0.704880032016 0.0774617736597 0.681825307224]
[ 0.898026510134 0.397624633445 -0.0532812182975 0.180566192161]
Got:
[ -0.359210604054 0.569326179705 0.146337376237 0.724859169325]
[ 0.179605302027 -0.144590775798 0.973035382602 0.00613084354877]
[ 0.179605302027 -0.704880032016 -0.142125402809 0.671331844787]
[ 0.898026510134 0.397624633445 -0.107647045464 0.154451130063]
**********************************************************************
File
"/Users/buildbot/build/sage/bsd-1/bsd_64_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1771:
sage: R
Expected:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 -9.93013661299e-16]
[ 0 0 0]
Got:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 6.28036983474e-16]
[ 0 0 0]
**********************************************************************
}}}
cleo (RHEL 5.3 ia64 Itanium 2):
{{{
**********************************************************************
File
"/home/buildbot/build/sage/cleo-1/cleo_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1766:
sage: Q
Expected:
[ -0.359210604054 0.569326179705 0.368048420509 0.641385845805]
[ 0.179605302027 -0.144590775798 0.925041158846 -0.301884576418]
[ 0.179605302027 -0.704880032016 0.0774617736597 0.681825307224]
[ 0.898026510134 0.397624633445 -0.0532812182975 0.180566192161]
Got:
[ -0.359210604054 0.569326179705 0.146859067236 0.724753652911]
[ 0.179605302027 -0.144590775798 0.973039543327 0.00543048428303]
[ 0.179605302027 -0.704880032016 -0.141642164231 0.671433967908]
[ 0.898026510134 0.397624633445 -0.107535848925 0.154528570726]
**********************************************************************
File
"/home/buildbot/build/sage/cleo-1/cleo_full/build/sage-4.7.2.alpha2/devel
/sage-main/sage/matrix/matrix_double_dense.pyx", line 1771:
sage: R
Expected:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 -9.93013661299e-16]
[ 0 0 0]
Got:
[ -5.56776436283 2.6940795304 -2.6940795304]
[ 0 -3.56958477752 3.56958477752]
[ 0 0 9.81879219451e-16]
[ 0 0 0]
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10795#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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