Mercurial > octave
view scripts/elfun/coth.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
line wrap: on
line source
## Copyright (C) 1994-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## This file is part of Octave. ## ## Octave 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. ## ## Octave 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 Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {} coth (@var{x}) ## Compute the hyperbolic cotangent of each element of @var{x}. ## @seealso{acoth} ## @end deftypefn function y = coth (x) if (nargin != 1) print_usage (); endif y = 1 ./ tanh (x); endfunction %!test %! x = [pi/2*i, 3*pi/2*i]; %! v = [0, 0]; %! assert (coth (x), v, sqrt (eps)); %!error coth () %!error coth (1, 2)