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[Octave-bug-tracker] [bug #29628] assignment of logical argument is brok


From: anonymous
Subject: [Octave-bug-tracker] [bug #29628] assignment of logical argument is broken
Date: Wed, 21 Apr 2010 14:46:25 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100402 Ubuntu/9.10 (karmic) Firefox/3.5.9

URL:
  <http://savannah.gnu.org/bugs/?29628>

                 Summary: assignment of logical argument is broken
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Wed 21 Apr 2010 02:46:24 PM UTC
                Category: Interpreter
                Severity: 3 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Alois Schlögl
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

    _______________________________________________________

Details:



The assignment to a vector with an empty index list 

   clear x
   x([]) = 0

yields an empty result, which is correct. 

   x = [](0x0)


However, if the rhs-value is of type logical

   clear x
   x([]) = logical(0)

the result is a scalar, which is incorrect.  
   
    x = 0

This behaviour is inconsistent. Moreover, it breaks also the following
command: 

   x=repmat(logical(0),0,1)

error: reshape: can't reshape 1x1 array to 0x1 array
error: called from:
error:   /usr/local/share/octave/3.3.51+/m/general/repmat.m at line 64,
column 7


The behavior is observed on 3.2.2 and the 3.3.51+ compiled in the last two
days. 








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