Mercurial > hg > octave-lyh
view scripts/elfun/cot.m @ 11188:4cb1522e4d0f
Use function handle as input to cellfun,
rather than quoted function name or anonymous function wrapper.
author | Rik <octave@nomad.inbox5.com> |
---|---|
date | Wed, 03 Nov 2010 17:20:56 -0700 |
parents | 16f53d29049f |
children | c776f063fefe |
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## Copyright (C) 1994, 1996, 1997, 1999, 2000, 2005, 2006, 2007, 2008, 2009 ## John W. Eaton ## ## 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 ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Mapping Function} {} cot (@var{x}) ## Compute the cotangent for each element of @var{x} in radians. ## @seealso{acot, cotd, coth} ## @end deftypefn ## Author: jwe function w = cot (z) if (nargin != 1) print_usage (); endif w = 1 ./ tan(z); endfunction %!test %! rt2 = sqrt (2); %! rt3 = sqrt (3); %! x = [pi/6, pi/4, pi/3, pi/2, 2*pi/3, 3*pi/4, 5*pi/6]; %! v = [rt3, 1, rt3/3, 0, -rt3/3, -1, -rt3]; %! assert(all (abs (cot (x) - v) < sqrt (eps))); %!error cot (); %!error cot (1, 2);