Mercurial > hg > octave-max
changeset 5464:9d0aab486882
[project @ 2005-09-22 21:31:39 by jwe]
| author | jwe |
|---|---|
| date | Thu, 22 Sep 2005 21:31:39 +0000 |
| parents | ab7973a599cf |
| children | d6163c0effd5 |
| files | scripts/ChangeLog scripts/polynomial/residue.m |
| diffstat | 2 files changed, 13 insertions(+), 9 deletions(-) [+] |
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--- a/scripts/ChangeLog +++ b/scripts/ChangeLog @@ -1,3 +1,12 @@ +2005-09-22 John W. Eaton <jwe@octave.org> + + * polynomial/residue.m: Use logical indexing instead of find.. + +2005-09-22 Julius Smith <jos@ccrma.stanford.edu> + + * polynomial/residue.m: Avoid division by zero for pure imaginary + and zero poles. + 2005-09-22 Bill Denney <denney@seas.upenn.edu> * strings/deblank.m: Handle cell arrays.
--- a/scripts/polynomial/residue.m +++ b/scripts/polynomial/residue.m @@ -205,19 +205,14 @@ p = roots (a); lp = length (p); + ## Determine if the poles are (effectively) zero. - ## Determine if the poles are (effectively) zero. - index = find (abs (p) < toler); - if (length (index) != 0) - p (index) = 0; - endif + p(abs (p) < toler) = 0; ## Determine if the poles are (effectively) real. - index = find (abs(p)>=toler && ( abs(imag(p)) ./ abs(p) < toler )); - if (length (index) != 0) - p (index) = real (p (index)); - endif + index = (abs (p) >= toler && (abs (imag (p)) ./ abs (p) < toler)); + p(index) = real (p(index)); ## Find the direct term if there is one.