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maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents cefd568ea073
children f3d52523cde1
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1 ## Copyright (C) 1994-2012 John W. Eaton
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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 {Mapping Function} {} lcm (@var{x}, @var{y})
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21 ## @deftypefnx {Mapping Function} {} lcm (@var{x}, @var{y}, @dots{})
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22 ## Compute the least common multiple of @var{x} and @var{y},
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23 ## or of the list of all arguments. All elements must be the same size or
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24 ## scalar.
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25 ## @seealso{factor, gcd}
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26 ## @end deftypefn
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27
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28 ## Author: KH <Kurt.Hornik@wu-wien.ac.at>
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29 ## Created: 16 September 1994
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30 ## Adapted-By: jwe
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31
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32 function l = lcm (varargin)
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33
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34 if (nargin > 1)
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35 if (common_size (varargin{:}) != 0)
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36 error ("lcm: all args must be of the same size or scalar");
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37 elseif (! all (cellfun ("isnumeric", varargin)))
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38 error ("lcm: all arguments must be numeric");
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39 endif
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40
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41 l = varargin{1};
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42 for i = 2:nargin
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43 x = varargin{i};
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44 msk = l == 0 & x == 0;
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45 l .*= x ./ gcd (l, x);
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46 l(msk) = 0;
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47 endfor
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48 else
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49 print_usage ();
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50 endif
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51
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52 endfunction
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53
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54 %!assert(lcm (3, 5, 7, 15) == 105);
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56 %!error lcm ();
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57
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58 %!test
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59 %! s.a = 1;
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60 %! fail("lcm (s)");
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