Mercurial > jwe > octave
view scripts/signal/sinewave.m @ 31161:6f4c8063b4c2 stable
GitHub-CI: Remove macos-10.15 runners from build matrix.
* .github/workflow/make.yaml (macos): GitHub-hosted runners for macos-10.15 are
being deprecated. Remove them from build matrix. See also:
https://github.com/actions/virtual-environments/issues/5583
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Wed, 27 Jul 2022 18:30:15 +0200 |
parents | 796f54d4ddbf |
children | 5d3faba0342e |
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######################################################################## ## ## Copyright (C) 1995-2022 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 {} {} sinewave (@var{m}, @var{n}, @var{d}) ## Return an @var{m}-element vector with @var{i}-th element given by ## @code{sin (2 * pi * (@var{i}+@var{d}-1) / @var{n})}. ## ## The default value for @var{d} is 0 and the default value for @var{n} is ## @var{m}. ## @seealso{sinetone} ## @end deftypefn function x = sinewave (m, n, d = 0) if (nargin < 1) print_usage (); endif ## FIXME: No input validation of M, N, or D if (nargin < 2) n = m; endif if (nargin < 3) d = 0; endif x = sin (((1 : m) + d - 1) * 2 * pi / n); endfunction %!assert (sinewave (1), 0) %!assert (sinewave (1, 4, 1), 1) %!assert (sinewave (1, 12, 1), 1/2, 1e-6) %!assert (sinewave (1, 12, 2), sqrt (3)/2, 1e-6) %!assert (sinewave (1, 20, 1), (sqrt (5)-1)/4, 1e-6) %!assert (sinewave (1), sinewave (1, 1,0)) %!assert (sinewave (3, 4), sinewave (3, 4, 0)) %!error <Invalid call> sinewave ()