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annotate scripts/strings/blanks.m @ 14138:72c96de7a403 stable

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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 8c4a2c2cc2b0
children f3d52523cde1
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 1996-2012 Kurt Hornik
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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} {} blanks (@var{n})
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21 ## Return a string of @var{n} blanks, for example:
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22 ##
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23 ## @example
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24 ## @group
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25 ## blanks (10);
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26 ## whos ans;
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27 ## @result{}
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28 ## Attr Name Size Bytes Class
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29 ## ==== ==== ==== ===== =====
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30 ## ans 1x10 10 char
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31 ## @end group
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32 ## @end example
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33 ## @seealso{repmat}
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34 ## @end deftypefn
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35
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36 ## Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at>
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37 ## Adapted-By: jwe
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39 function s = blanks (n)
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41 if (nargin != 1)
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42 print_usage ();
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43 elseif (! (isscalar (n) && n == fix (n) && n >= 0))
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44 error ("blanks: N must be a non-negative integer");
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45 endif
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47 ## If 1:n is empty, the following expression will create an empty
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48 ## character string. Otherwise, it will create a row vector.
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49 s(1:n) = " ";
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50
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51 endfunction
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53
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54 ## There really isn't that much to test here
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55 %!assert(blanks (0), "")
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56 %!assert(blanks (5), " ")
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57 %!assert(blanks (10), " ")
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58
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59 %% Test input validation
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60 %!error blanks ()
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61 %!error blanks (1, 2)
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62 %!error blanks (ones (2))
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63 %!error blanks (2.1)
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64 %!error blanks (-2)
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