Mercurial > octave
view scripts/elfun/tand.m @ 31198:863730dd0f83 stable
nextpow2: Fix for input between 0.5 and 1 (bug #62947).
* scripts/general/nextpow2.m: Switch to a naïve implementation using log2 with
a single output argument and ceil.
author | Markus Mützel <markus.muetzel@gmx.de> |
---|---|
date | Wed, 24 Aug 2022 17:15:34 +0200 |
parents | 796f54d4ddbf |
children | 83f9f8bda883 |
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######################################################################## ## ## Copyright (C) 2006-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## 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 {} {} tand (@var{x}) ## Compute the tangent for each element of @var{x} in degrees. ## ## Returns zero for elements where @code{@var{x}/180} is an integer and ## @code{Inf} for elements where @code{(@var{x}-90)/180} is an integer. ## @seealso{atand, tan} ## @end deftypefn function y = tand (x) if (nargin < 1) print_usage (); endif I0 = x / 180; I90 = (x-90) / 180; y = tan (I0 .* pi); y(I0 == fix (I0) & isfinite (I0)) = 0; y(I90 == fix (I90) & isfinite (I90)) = Inf; endfunction %!assert (tand (10:10:80), tan (pi*[10:10:80]/180), -10*eps) %!assert (tand ([0, 180, 360]) == 0) %!assert (tand ([90, 270]) == Inf) %!error <Invalid call> tand ()