Mercurial > octave
view scripts/time/is_leap_year.m @ 31218:a33a9c87220b stable
imformats.m: Fix "isa" function in return value (bug #62974)
* imformats.m (isa_magick): Fix typo "Format" to "format" for name of field in
struct returned from __magick_ping__.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 30 Aug 2022 15:24:29 -0700 |
parents | 796f54d4ddbf |
children | 83f9f8bda883 |
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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 {} {} is_leap_year () ## @deftypefnx {} {} 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 retval = is_leap_year (year) if (nargin == 0) t = clock (); year = t(1); endif retval = (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)