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[project @ 2000-01-19 08:49:56 by jwe]
author jwe
date Wed, 19 Jan 2000 08:50:14 +0000
parents f8dde1807dee
children 02a959755258
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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, 59 Temple Place - Suite 330, Boston, MA
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18 ## 02111-1307, USA.
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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 ## @end deftypefn
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32 ## @seealso{round}
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34 ## Author: jwe
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35
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36 function retval = rem (x, y)
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38 usage_msg = "rem (x, y)";
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39
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40 if (nargin != 2)
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41 usage (usage_msg);
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42 endif
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43
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44 if (any (size (x) != size (y)) && ! (is_scalar (x) || is_scalar (y)))
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45 error ("rem: argument sizes must agree");
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46 endif
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47
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48 ## Matlab allows complex arguments, but as far as I can tell, that's a
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49 ## bunch of hooey.
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50
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51 if (any (any (imag (x))) || any (any (imag (y))))
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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 if (nargin == 2)
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56 retval = x - y .* fix (x ./ y);
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57 else
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58 error (usage_msg);
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59 endif
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60
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61 endfunction