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annotate scripts/strings/strncmp.m @ 5899:82c38ce145a7

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[project @ 2006-07-19 23:00:22 by jwe]
author jwe
date Wed, 19 Jul 2006 23:00:22 +0000
parents 86adc85cc471
children 34f96dd5441b
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1 ## Copyright (C) 1996, 1997 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 2, or (at your option)
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8 ## 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, write to the Free
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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18 ## 02110-1301, USA.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} strncmp (@var{s1}, @var{s2}, @var{n})
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22 ## Return 1 if the first @var{n} characters of character strings @var{s1}
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23 ## and @var{s2} are the same, and 0 otherwise.
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24 ##
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25 ## If either @var{s1} or @var{s2} is a cell array of strings, then an array
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26 ## of the same size is returned, containing the values described above for
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27 ## every member of the cell array. The other argument may also be a cell
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28 ## array of strings (of the same size or with only one element), char matrix
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29 ## or character string.
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30 ##
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31 ## @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strncmp
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32 ## function returns 1 if the character strings are equal, and 0 otherwise.
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33 ## This is just the opposite of the corresponding C library function.
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34 ## @seealso{strcmp, strcmpi, strncmpi}
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35 ## @end deftypefn
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36
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37 function retval = strncmp (s1, s2, n)
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38
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39 if (nargin == 3)
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40 retval = strcmp (strtrunc (s1, n), strtrunc (s2, n));
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41 else
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42 usage ("strncmp (s1, s2, n)");
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43 endif
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44
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45 endfunction