bugGNU Octave - Bugs: bug #33538, fread does not support 'bitn',...


bug #33538: fread does not support 'bitn', 'ubitn' formats

Submitted by:  Arnaud Delorme <arnodelorme>
Submitted on:  Sat 11 Jun 2011 03:44:15 PM UTC  
Category:  Interpreter Severity:  2 - Minor
Priority:  3 - Low Item Group:  Matlab Compatibility
Status:  Confirmed Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  dev Operating System:  Any

Add a New Comment (Rich Markup)

You are not logged in

Please log in, so followups can be emailed to you.


Tue 21 Jul 2015 07:05:15 PM UTC, comment #4: 

Certainly there is interest.  The debugging should start in libinterp/corefcn/file-io.cc.  There you will find the DEFUN for fread.  This calls out to do_fread() and I think that's where you should start hunting for a solution.

Rik <rik5>
Project Administrator
Tue 21 Jul 2015 05:53:51 PM UTC, comment #3: 

Is there still interest in this topic ? I've met the
inability of GNU/Octave to perform a ubit1 fread (which
works in Matlab) ... am willing to have a look at it if no
one has so far.

jean michel friedt <jmfriedt>
Wed 13 Mar 2013 03:43:23 PM UTC, comment #2: 

Changing the Item Group to "Matlab Compatibility".

An easy workaround for the 'bit24' option is 'int24' which is supported.

Rik <rik5>
Project Administrator
Mon 13 Jun 2011 03:30:23 AM UTC, comment #1: 

Re-titled to more accurately summarize issue.

Rik <rik5>
Project Administrator
Sat 11 Jun 2011 03:44:15 PM UTC, original submission:  

fread using 'bit24' is not recognized under Octave

Arnaud Delorme <arnodelorme>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

No files currently attached


Depends on the following items: None found

   bug dependencies.


Carbon-Copy List
  • -email is unavailable- added by mtmiller (Updated the item)
  • -email is unavailable- added by jmfriedt (Posted a comment)
  • -email is unavailable- added by rik5 (Posted a comment)
  • -email is unavailable- added by arnodelorme (Submitted the item)

    Do you think this task is very important?
    If so, you can add your encouragement to it.
    This task has 0 encouragements so far.

    Only project members can vote.




    Follow 9 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-10-31 mtmiller Release3.4.0 => dev
    2015-07-21 rik5 Operating SystemMac OS => Any
    2013-03-13 rik5 CategoryNone => Interpreter
        Severity3 - Normal => 2 - Minor
        Item GroupIncorrect Result => Matlab Compatibility
    2011-08-11 jwe Dependencies- => bugs #33991 is dependent
    2011-06-13 rik5 Priority5 - Normal => 3 - Low
        StatusNone => Confirmed
        Summaryfread Matlab compatibility issue => fread does not support 'bitn', 'ubitn' formats

    Back to the top

    Powered by Savane 3.5