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On 21 August 2012 06:17, <ro...@bumerl.at> wrote: > Quoting Carnë Draug <carandraug+...@gmail.com>: > >> On 20 August 2012 13:33, Roman Bumerl-Lexa <ro...@bumerl.at> wrote: >>> >>> When using the golay decoder (an error correcting decoder), and there are >>> more than the three allowed erroneous bits, the function crashes instead >>> of >>> setting the error flag. >>> >>> Golaytestcase.m: >>> >>> %octave >>> % Testcase for crashing egolaydec.m >>> x=[1 0 1 0 1 0 1 0 1 0 1 0 ]; >>> y=egolayenc(x); % create the encoded vector. >>> y(17:2:23)=0; % set four errors in this vector. >>> [res,err]=egolaydec (y) % try to decode this erroneous vector. >>> >>> >>> >>> I contacted the author Annamalai, Muthiah >>> <muthiah.annama...@mavs.uta.edu> >>> and he wrote : >>> >>> "Roman, >>> >>> I will not be able to debug the algorithm. But the error can be fixed by >>> inserting the line, >>> >>> E=[S, zeros(1,12)]; >>> >>> just after the statement >>> >>> done = 0; >>> >>> You may also submit a patch to the Octave project. I won't be able to >>> do this. >>> >>> Thanks, >>> -Muthu" >>> >>> I have inserted the line and it works now fine. I have tested it also for >>> some other bitvectors containing more than the four errors used in my >>> test >>> case. >>> >>> Can anyone please fix this in the repository. >>> >>> Roman >> >> >> Hi Roman, >> >> thank you for the fix. I have applied it now to the development tree. >> Could you check if everything is right now? >> >> Carnë >> > > Hi Carnë > > I have downloaded this actualized version of egolaydec.m from the link > below, but it did not work. Maybe this is caused by running the older Octave > Version 3.2.4. > I will try it on another installation with Octave 3.6. I will inform you. > > http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/main/comm/inst/egolaydec.m?revision=10893 > > > > My working version consists of the egolaydec.m out of the following link, > including the inserted line from Muthiah. > > http://sourceforge.net/projects/octave/files/Octave%20Forge%20Packages/Individual%20Package%20Releases/communications-1.1.1.tar.gz/download > > Roman Hi Roman maybe. I don't have 3.2 installed but it passes both tests in 3.6.2. Carnë ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Octave-dev mailing list Octave-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/octave-dev
