Mercurial > octave-dspies
view scripts/elfun/cosd.m @ 18960:a5add7b660ac stable
build: Fix compiling GUI on Alpha platforms (bug #42839).
* libgui/Makefile.am: Use GNU Makefile filter-out command to remove
-mieee CFLAG option from CPPFLAGS passed to MOC command.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 26 Jul 2014 07:50:38 -0700 |
parents | d63878346099 |
children |
line wrap: on
line source
## Copyright (C) 2006-2013 David Bateman ## ## 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 {Function File} {} cosd (@var{x}) ## Compute the cosine for each element of @var{x} in degrees. Returns zero ## for elements where @code{(@var{x}-90)/180} is an integer. ## @seealso{acosd, cos} ## @end deftypefn ## Author: David Bateman <dbateman@free.fr> function y = cosd (x) if (nargin != 1) print_usage (); endif I = x / 180; y = cos (I .* pi); I = I + 0.5; y(I == fix (I) & finite (I)) = 0; endfunction %!assert (cosd (0:10:80), cos (pi*[0:10:80]/180), -10*eps) %!assert (cosd ([0, 180, 360]) != 0) %!assert (cosd ([90, 270]) == 0) %!error cosd () %!error cosd (1, 2)