Re: [OctDev] Bug + Fix: Octave / Communications package / egolaydec.m

[Carnë D. <car...@gm...>]

On 20 August 2012 13:33, Roman Bumerl-Lexa <ro...@bu...> 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 <mut...@ma...>
> 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