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annotate scripts/general/nargchk.m @ 1315:611d403c7f3d

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[project @ 1995-06-25 19:56:32 by jwe]
author jwe
date Sun, 25 Jun 1995 19:56:32 +0000
parents 3f257ab07921
children 5d29638dd524
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1 # Copyright (C) 1994, 1995 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 the
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7 # Free Software Foundation; either version 2, or (at your option) any
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8 # later version.
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9 #
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10 # Octave is distributed in the hope that it will be useful, but WITHOUT
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 # 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18
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19 function retval = nargchk (nargin_min, nargin_max, n)
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20
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21 # usage: nargchk (nargin_min, nargin_max, n)
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22 #
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23 # If N is in the range NARGIN_MIN to NARGIN_MAX, return the empty
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24 # matrix. Otherwise, return a message indicating whether N is too
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25 # large or too small.
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26
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27 if (nargin != 3)
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28 usage ("nargchk (nargin_min, nargin_max, n)");
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29 endif
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30
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31 if (nargin_min > nargin_max)
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32 error ("nargchk: nargin_min > nargin_max");
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33 endif
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34
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35 if (n < nargin_min)
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36 retval = "nargchk: N is less than nargin_min";
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37 elseif (n > nargin_max)
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38 retval = "nargchk: N is greater than nargin_max";
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39 else
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40 retval = [];
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41 endif
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42
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43 endfunction