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| From: | Juan Pablo Carbajal |
| Subject: | [Octave-bug-tracker] [bug #53506] qp uses fix tolerance: ignores sqp tolerance argument |
| Date: | Wed, 28 Mar 2018 16:04:18 -0400 (EDT) |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 |
URL:
<http://savannah.gnu.org/bugs/?53506>
Summary: qp uses fix tolerance: ignores sqp tolerance
argument
Project: GNU Octave
Submitted by: juanpi
Submitted on: Wed 28 Mar 2018 08:04:16 PM UTC
Category: Octave Function
Severity: 4 - Important
Priority: 5 - Normal
Item Group: Inaccurate Result
Status: Confirmed
Assigned to: None
Originator Name: juanpi
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: Any
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Details:
Bug #53483 indicated a problem in sqp which is track down to the C++ code of
qp.cc
In line 99 qp uses a fixed tolerance for the search given by sqrt(eps).
http://octave.org/doxygen/4.3/da/dbd/____qp_____8cc_source.html
This is a bug in qp and one would need to pass the tolerance as a parameter
(or compute the correct tolerance for qp based on the arguments of sqp).
This bug is similar to feature request #43030
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