[Octave-bug-tracker] [bug #56810] [octave forge] (nurbs) nrbbasisfunder fails when called with 4 output arguments

[Claudio Catterina]

URL:
  <https://savannah.gnu.org/bugs/?56810>

                 Summary: [octave forge] (nurbs) nrbbasisfunder fails when
called with 4 output arguments
                 Project: GNU Octave
            Submitted by: ccatterina
            Submitted on: Mon 26 Aug 2019 05:44:45 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: GNU/Linux

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Details:

As the function documentation says it should be possible to compute the basis
functions derivatives with respect to the directions `u`, `v` and `w`:


%   [Bu, Bv, Bw, N] = nrbbasisfunder ({u, v, w}, vol)
%   [Bu, Bv, Bw, N] = nrbbasisfunder (pts, vol)


But due to the following check the function raise an error because nargout >
3:


  if (   (nargin<2) ...
      || (nargout>3) ...
      || (~isstruct(nrb)) ...
      || (iscell(points) && ~iscell(nrb.knots)) ...
      || (~iscell(points) && iscell(nrb.knots) &&
(size(points,1)~=numel(nrb.number))) ...
      || (~iscell(nrb.knots) && (nargout>2)) ...
      )
    error('Incorrect input arguments in nrbbasisfunder');
  end





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