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[project @ 2007-12-07 19:26:20 by jwe]
author jwe
date Fri, 07 Dec 2007 19:26:21 +0000
parents a1dbe9d80eee
children 8b7b4f58199f 78d3faa70aaa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2004,
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2 ## 2005, 2006, 2007 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 {Mapping Function} {} rem (@var{x}, @var{y})
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22 ## Return the remainder of @code{@var{x} / @var{y}}, computed using the
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23 ## expression
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24 ##
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25 ## @example
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26 ## x - y .* fix (x ./ y)
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27 ## @end example
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28 ##
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29 ## An error message is printed if the dimensions of the arguments do not
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30 ## agree, or if either of the arguments is complex.
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31 ## @seealso{mod, round}
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32 ## @end deftypefn
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34 ## Author: jwe
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35
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36 function r = rem (x, y)
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37
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38 if (nargin != 2)
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39 print_usage ();
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40 endif
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41
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42 if (! size_equal (x, y) && ! (isscalar (x) || isscalar (y)))
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43 error ("rem: argument sizes must agree");
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44 endif
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45
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46 ## Matlab allows complex arguments, but as far as I can tell, that's a
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47 ## bunch of hooey.
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48
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49 if (isreal (x) && isreal (y))
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50 r = x - y .* fix (x ./ y);
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51 else
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52 error ("rem: complex arguments are not allowed");
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53 endif
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54
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55 endfunction