Mercurial > octave
view scripts/time/is_leap_year.m @ 31248:8b75954a4670
delaunayn: adjust node ordering for positive outward normal vectors (bug #53397)
* delaunayn.m: Check sign of simplex volume, flip node order for negative
volumes to ensure positive (outward-pointing) normal vectors. Add BISTs to
check for positive volumes.
* etc/News.8.md: Append function improvement note to delaunayn change
paragraph under General Improvements.
author | Nicholas R. Jankowski <jankowski.nicholas@gmail.com> |
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date | Thu, 29 Sep 2022 23:09:05 -0400 |
parents | 83f9f8bda883 |
children | 597f3ee61a48 |
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######################################################################## ## ## Copyright (C) 1996-2022 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 {} {@var{tf} =} is_leap_year () ## @deftypefnx {} {@var{tf} =} is_leap_year (@var{year}) ## Return true if @var{year} is a leap year and false otherwise. ## ## If no year is specified, @code{is_leap_year} uses the current year. ## ## For example: ## ## @example ## @group ## is_leap_year (2000) ## @result{} 1 ## @end group ## @end example ## @seealso{weekday, eomday, calendar} ## @end deftypefn function tf = is_leap_year (year) if (nargin == 0) t = clock (); year = t(1); endif tf = (rem (year, 4) == 0 & rem (year, 100) != 0) | (rem (year, 400) == 0); endfunction %!assert (is_leap_year (2000), true) %!assert (is_leap_year (1976), true) %!assert (is_leap_year (1000), false) %!assert (is_leap_year (1800), false) %!assert (is_leap_year (1600), true)