bugGNU Octave - Bugs: bug #47505, [octave forge] (signal)...

 
 

bug #47505: [octave forge] (signal) bitrevorder function returns complex conjugate

Submitted by:  None
Submitted on:  Wed 23 Mar 2016 06:11:26 AM UTC  
 
Category: Octave Forge PackageSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: Need InfoAssigned to: Mike Miller <mtmiller>
Originator Name: hyunwook jiOriginator Email: -unavailable-
Open/Closed: OpenRelease: 4.0.0
Operating System: Microsoft Windows

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Wed 23 Mar 2016 06:27:18 AM UTC, comment #1:

Thanks for the bug report. I think I see where this needs to be fixed, but to be sure I am understanding can you supply a simple example that shows the error you are seeing?

Mike Miller <mtmiller>
Project AdministratorIn charge of this item.
Wed 23 Mar 2016 06:11:26 AM UTC, original submission:

Hello, I'm using GNU Octave 4.0.0, instead of MATLAB R2015b, for the usage of HW/SW co-simulation.

At first, my source code was written in MATLAB and this code contains 'bitrevorder' function.

Of course, this source code runs correctly in MATLAB.

But in Octave, my source code runs incorrectly because of the difference of 'bitrevorder' function.

In MATLAB, what bitrevorder function do : just reorder some values(double, complex number, ..., whatever.) in bit-reversal order.

But, the same function in Octave doesn't.
Yeah, it also reorders some values in bit-reversal order, but the results are "COMPLEX CONJUGATED" unnecessarily.

I think you guys probably would not have intended to create this function to reorder in bit-reversal order "with complex conjugation",
that's why I think it is the bug inside the bitrevorder function.

Anonymous

 

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  • -unavailable- added by jwe (Updated the item)
  • -unavailable- added by mtmiller (Posted a comment)
  • -unavailable- added by None (Submitted the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Sun 13 Aug 2017 12:58:59 PM UTCjweSummarysignal package: bitrevorder function returns complex conjugate=>[octave forge] (signal) bitrevorder function returns complex conjugate
    Tue 29 Mar 2016 05:59:13 PM UTCmtmillerAssigned toNone=>mtmiller
    Wed 23 Mar 2016 06:27:18 AM UTCmtmillerStatusNone=>Need Info
      SummaryBit reversal order(bitrevorder) function in \'Signal\' package is incorrect.=>signal package: bitrevorder function returns complex conjugate

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