zero crossing determination in octave?

[Søren Hauberg]

fre, 05 12 2008 kl. 22:47 +0000, skrev Carlo de Falco:
> > Don't know whether this already exists but it seems to me it's  
> > trivial to implement,
> > see the attachment...
> > c.
> well...
> even a trivial function can contain mistakes ;)
> fix attached,

I guess such a function makes sense to have. Could you add it to the
'signal' package which I guess is the one most suited for such a
function? Also, please add it to the 'INDEX' file of the package.

Thanks,
Søren