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1 ## Copyright (C) 1998 Ariel Tankus |
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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 {Mapping Function} {[@var{r1}, @var{r2}, @dots{}, @var{rn}] =} deal (@var{a}) |
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22 ## @deftypefnx {Mapping Function} {[@var{r1}, @var{r2}, @dots{}, @var{rn}] =} deal (@var{a1}, @var{a2}, @dots{}, @var{an}) |
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23 ## |
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24 ## Copy the input parameters into the corresponding output parameters. |
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25 ## If only one input parameter is supplied, its value is copied to each |
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26 ## of the outputs. |
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27 ## |
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28 ## For example, |
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29 ## |
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30 ## @example |
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31 ## [a, b, c] = deal (x, y, z); |
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32 ## @end example |
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33 ## |
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34 ## @noindent |
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35 ## is equivalent to |
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36 ## |
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37 ## @example |
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38 ## @group |
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39 ## a = x; |
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40 ## b = y; |
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41 ## c = z; |
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42 ## @end group |
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43 ## @end example |
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44 ## |
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45 ## @noindent |
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46 ## and |
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47 ## |
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48 ## @example |
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49 ## [a, b, c] = deal (x); |
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50 ## @end example |
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51 ## |
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52 ## @noindent |
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53 ## is equivalent to |
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54 ## |
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55 ## @example |
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56 ## a = b = c = x; |
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57 ## @end example |
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58 ## @end deftypefn |
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59 |
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60 ## Author: Ariel Tankus |
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61 ## Author: Paul Kienzle and Etienne Grossman |
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62 ## Created: 13.11.98 |
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63 ## Adapted-by: jwe |
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64 |
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65 function [varargout] = deal (varargin) |
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66 |
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67 if (nargin == 0) |
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68 usage ("[a, b, c, d] = deal (x, y, z, a)"); |
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69 elseif (nargin == 1 || nargin == nargout) |
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70 varargout(1:nargout) = varargin; |
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71 else |
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72 error ("deal: nargin > 1 and nargin != nargout"); |
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73 endif |
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74 |
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75 endfunction |
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76 |
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77 %!test |
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78 %! [a,b]=deal(1,2); |
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79 %! assert(a,1); |
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80 %! assert(b,2); |
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81 %!test |
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82 %! [a,b]=deal(1); |
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83 %! assert(a,1); |
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84 %! assert(b,1); |
