1 ## Copyright (C) 2011 Lukas F. Reichlin
3 ## This program is free software: you can redistribute it and/or modify
4 ## it under the terms of the GNU General Public License as published by
5 ## the Free Software Foundation, either version 3 of the License, or
6 ## (at your option) any later version.
8 ## This program is distributed in the hope that it will be useful,
9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 ## GNU General Public License for more details.
13 ## You should have received a copy of the GNU General Public License
14 ## along with this program. If not, see <http://www.gnu.org/licenses/>.
17 ## @deftypefn {Function File} {@var{qexp} =} exp (@var{q})
18 ## Exponential of a quaternion.
21 ## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
22 ## Created: November 2011
35 q.w = exps .* cos (normv);
36 q.x = exps .* (q.x ./ normv) .* sinv;
37 q.y = exps .* (q.y ./ normv) .* sinv;
38 q.z = exps .* (q.z ./ normv) .* sinv;