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Fix warnings
author LYH <lyh.kernel@gmail.com>
date Fri, 27 Sep 2013 17:43:27 +0800
parents bc924baa2c4e
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2004-2012 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 3 of the License, or (at
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8 ## your option) 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, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {[@var{c}, @var{maxsize}, @var{endian}] =} computer ()
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21 ## @deftypefnx {Function File} {@var{arch} =} computer ("arch")
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22 ## Print or return a string of the form @var{cpu}-@var{vendor}-@var{os}
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23 ## that identifies the kind of computer Octave is running on. If invoked
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24 ## with an output argument, the value is returned instead of printed. For
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25 ## example:
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26 ##
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27 ## @example
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28 ## @group
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29 ## computer ()
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30 ## @print{} i586-pc-linux-gnu
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31 ##
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32 ## x = computer ()
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33 ## @result{} x = "i586-pc-linux-gnu"
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34 ## @end group
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35 ## @end example
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36 ##
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37 ## If two output arguments are requested, also return the maximum number
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38 ## of elements for an array.
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39 ##
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40 ## If three output arguments are requested, also return the byte order
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41 ## of the current system as a character (@qcode{"B"} for big-endian or
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42 ## @qcode{"L"} for little-endian).
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43 ##
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44 ## If the argument @qcode{"arch"} is specified, return a string
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45 ## indicating the architecture of the computer on which Octave is
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46 ## running.
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47 ## @end deftypefn
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48
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49 function [c, maxsize, endian] = computer (a)
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50
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51 if (nargin == 1 && ischar (a) && strcmpi (a, "arch"))
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52 tmp = ostrsplit (octave_config_info ("canonical_host_type"), "-");
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53 if (numel (tmp) == 4)
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54 c = sprintf ("%s-%s-%s", tmp{4}, tmp{3}, tmp{1});
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55 else
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56 c = sprintf ("%s-%s", tmp{3}, tmp{1});
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57 endif
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58 elseif (nargin == 0)
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59 msg = octave_config_info ("canonical_host_type");
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60
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61 if (strcmp (msg, "unknown"))
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62 msg = "Hi Dave, I'm a HAL-9000";
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63 endif
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64
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65 if (nargout == 0)
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66 printf ("%s\n", msg);
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67 else
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68 c = msg;
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69 if (strcmp (octave_config_info ("USE_64_BIT_IDX_T"), "true"))
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70 maxsize = 2^63-1;
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71 else
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72 maxsize = 2^31-1;
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73 endif
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74 if (octave_config_info ("words_big_endian"))
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75 endian = "B";
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76 elseif (octave_config_info ("words_little_endian"))
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77 endian = "L";
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78 else
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79 endian = "?";
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80 endif
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81 endif
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82 else
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83 print_usage ();
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84 endif
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85
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86 endfunction
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87
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88
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89 %!assert (ischar (computer ()))
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90 %!assert (computer (), octave_config_info ("canonical_host_type"))
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91 %!assert (ischar (computer ("arch")))
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92
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93 %!error computer (2)
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94