bugGNU Octave - Bugs: bug #56959, issue warning when range operator...


bug #56959: issue warning when range operator has complex arguments

Submitted by:  Rik <rik5>
Submitted on:  Fri 27 Sep 2019 08:27:43 PM UTC  
Category:  Interpreter Severity:  1 - Wish
Priority:  3 - Low Item Group:  Feature Request
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  dev Operating System:  Any

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Sun 13 Oct 2019 04:33:21 PM UTC, comment #3: 

Fine.  I updated the warning message here https://hg.savannah.gnu.org/hgweb/octave/rev/19ba2619d746.

Rik <rik5>
Project Administrator
Sun 13 Oct 2019 02:22:36 PM UTC, comment #2: 

I would suggest to word this warning a bit differently:

diff -r c2c9185d3389 libinterp/octave-value/ov.cc
--- a/libinterp/octave-value/ov.cc      Sat Oct 12 17:33:28 2019 -0700
+++ b/libinterp/octave-value/ov.cc      Sun Oct 13 16:14:31 2019 +0200
@@ -2552,7 +2552,7 @@

       if (base.iscomplex () || limit.iscomplex ()
           || (increment.is_defined () && increment.iscomplex ()))
-        warning ("complex portion of colon arguments is ignored");
+        warning ("imaginary part of complex colon arguments is ignored");

       Matrix m_base, m_limit, m_increment;

A.R. Burgers <arb>
Sun 13 Oct 2019 12:34:29 AM UTC, comment #1: 

Fixed in this changeset (https://hg.savannah.gnu.org/hgweb/octave/rev/c2c9185d3389).

Closing report.

Rik <rik5>
Project Administrator
Fri 27 Sep 2019 08:27:43 PM UTC, original submission:  

The range operator does not support complex arguments.  That by itself is fine, but it would be nice if there was a warning issued by the interpreter that they are unsupported.  Instead, Octave just returns an empty matrix.

Sample code to reproduce:

x = -pi*i:0.1*i:pi*i
x = [](1x0)

For comparison, Matlab returns the empty matrix, but also issues a warning.

Rik <rik5>
Project Administrator


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-10-13 rik5 StatusConfirmed => Fixed
        Open/ClosedOpen => Closed
    2019-09-27 rik5 Priority5 - Normal => 3 - Low

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