You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: fixdipole.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/external/fieldtrip/private
    
    the code of the file until where you have to start completion: function dip = fixdipole(dip)

% FIXDIPOLE ensures that the dipole position and moment are
% consistently represented throughout FieldTrip functions.

% Copyright (C) 2009, Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
%    FieldTrip is free software: you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation, either version 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.

    
function dip = fixdipole(dip)

% FIXDIPOLE ensures that the dipole position and moment are
% consistently represented throughout FieldTrip functions.

% Copyright (C) 2009, Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
%    FieldTrip is free software: you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation, either version 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.
%
%    You should have received a copy of the GNU General Public License
%    along with FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id: fixdipole.m 7123 2012-12-06 21:21:38Z roboos $

[m, n] = size(dip.pos);

if n==3
  % the input representation is Nx3, which is what we want
elseif m==3
  % it is possible to translate it into a Nx3 unambiguously
  warning('input dipole positions should be specified as Nx3 matrix');
  dip.pos = dip.pos';
elseif m==1
  % it is possible to translate it into a Nx3 unambiguously
  warning('input dipole positions should be specified as Nx3 matrix');
  dip.pos = reshape(dip.pos, 3, n/3)';
else
  % it is not clear how to convert to a Nx3 matrix
  error('input dipole positions should be specified as Nx3 matrix');
end