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1 ## Copyright (C) 1998, 2000, 2004, 2005, 2006, 2007 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 {Function File} {} lower (@var{s}) |
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21 ## Transform all letters in the character string (or cell array of |
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22 ## character strings) @var{s} to lower case. |
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23 ## @seealso{upper, tolower, toupper} |
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24 ## @end deftypefn |
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25 |
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26 ## Author: jwe |
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27 |
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28 function retval = lower (s) |
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29 |
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30 if (nargin != 1) |
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31 print_usage (); |
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32 endif |
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33 |
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34 if (ischar (s)) |
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35 retval = tolower (s); |
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36 elseif (iscellstr (s)) |
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37 retval = cellfun (@tolower, s, "UniformOutput", false); |
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38 else |
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39 error ("lower: `s' must be a string or cell array of strings"); |
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40 endif |
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41 |
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42 endfunction |
