## Copyright (C) 2010-2016   Lukas F. Reichlin
##
## This program 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.
##
## This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## Conjugate transpose of a quaternion.  Used by Octave for "q'".

## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
## Created: May 2010
## Version: 0.1

function a = ctranspose (a)

  if (nargin != 1)
    print_usage ();
  endif

  a = conj (transpose (a));

endfunction


%!test
%! q = quaternion ([1, 2], [3, 4], [5, 6], [7, 8]);
%! result = q';
%! expected = quaternion ([1; 2], [-3; -4], [-5; -6], [-7; -8]);
%! assert (result == expected);
