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annotate scripts/time/eomday.m @ 17535:c12c688a35ed default tip lyh

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Fix warnings
author LYH <lyh.kernel@gmail.com>
date Fri, 27 Sep 2013 17:43:27 +0800
parents f3d52523cde1
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2004-2012 Paul Kienzle
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {@var{e} =} eomday (@var{y}, @var{m})
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21 ## Return the last day of the month @var{m} for the year @var{y}.
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22 ## @seealso{weekday, datenum, datevec, is_leap_year, calendar}
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23 ## @end deftypefn
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24
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25 ## Author: pkienzle <pkienzle@users.sf.net>
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26 ## Created: 25 July 2004
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27 ## Adapted-By: William Poetra Yoga Hadisoeseno <williampoetra@gmail.com>
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28
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29 function e = eomday (y, m)
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30
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31 if (nargin != 2)
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32 print_usage ();
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33 endif
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34
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35 eom = [31, 28, 31, 30 ,31, 30, 31, 31, 30, 31, 30, 31];
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36 e = reshape (eom(m), size (m));
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37 e += (m == 2) & (mod (y, 4) == 0 & (mod (y, 100) != 0 | mod (y, 400) == 0));
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38
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39 endfunction
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40
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41
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42 %!demo
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43 %! ## Find leap years in the 20th century
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44 %! y = 1900:1999;
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45 %! e = eomday (y, repmat (2, [1, 100]));
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46 %! y(find (e == 29))
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47
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48 # tests
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49 %!assert (eomday ([-4:4],2), [29,28,28,28,29,28,28,28,29])
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50 %!assert (eomday ([-901,901],2), [28,28])
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51 %!assert (eomday ([-100,100],2), [28,28])
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52 %!assert (eomday ([-900,900],2), [28,28])
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53 %!assert (eomday ([-400,400],2), [29,29])
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54 %!assert (eomday ([-800,800],2), [29,29])
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55 %!assert (eomday (2001,1:12), [31,28,31,30,31,30,31,31,30,31,30,31])
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56 %!assert (eomday (1:3,1:3), [31,28,31])
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57 %!assert (eomday (1:2000,2)', datevec (datenum (1:2000,3,0))(:,3))
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58 %!assert ([1900:1999](find(eomday(1900:1999,2*ones(1,100))==29)), [1904,1908,1912,1916,1920,1924,1928,1932,1936,1940,1944,1948,1952,1956,1960,1964,1968,1972,1976,1980,1984,1988,1992,1996])
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59 %!assert (eomday ([2004;2005], [2;2]), [29;28])
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60
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61 %% Test input validation
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62 %!error eomday ()
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63 %!error eomday (1)
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64 %!error eomday (1,2,3)
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