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annotate scripts/signal/sinc.m @ 9211:f0c3d3fc4903

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Simplify Texinfo documentation in .m scripts by removing redundant @iftex calls
author Rik <rdrider0-list@yahoo.com>
date Sun, 17 May 2009 14:39:39 -0700
parents eb63fbe60fab
children fd0a3ac60b0e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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eb63fbe60fab update copyright notices
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 1994, 1996, 1997, 1999, 2000, 2004, 2005, 2007, 2009
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2 ## John W. Eaton
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} sinc (@var{x})
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22 ## Return
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23 ## @tex
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24 ## $ \sin (\pi x)/(\pi x)$.
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25 ## @end tex
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81d6ab3ac93c Allow documentation tobe built for other formats than tex and info
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26 ## @ifnottex
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27 ## sin(pi*x)/(pi*x).
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28 ## @end ifnottex
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29 ## @end deftypefn
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30
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31 ## Author: jwe ???
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32
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33 function result = sinc (x)
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34
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35 if (nargin != 1)
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36 print_usage ();
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37 endif
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38
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39 result = ones (size (x));
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40
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41 i = (x != 0);
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42
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43 if (any (i(:)))
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44 t = pi * x(i);
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45 result(i) = sin (t) ./ t;
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46 endif
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47
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48 endfunction