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annotate scripts/strings/bin2dec.m @ 19022:5eca3080c7cd

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maint: Merge Stefan's changesets onto default after verification.
author Rik <rik@octave.org>
date Sat, 14 Jun 2014 13:24:46 -0700
parents d63878346099
children 4197fc428c7d
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1 ## Copyright (C) 1996-2013 Daniel Calvelo
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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} {} bin2dec (@var{s})
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21 ## Return the decimal number corresponding to the binary number represented
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22 ## by the string @var{s}. For example:
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23 ##
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24 ## @example
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25 ## @group
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26 ## bin2dec ("1110")
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27 ## @result{} 14
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28 ## @end group
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29 ## @end example
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30 ##
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31 ## Spaces are ignored during conversion and may be used to make the binary
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32 ## number more readable.
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33 ##
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34 ## @example
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35 ## @group
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36 ## bin2dec ("1000 0001")
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37 ## @result{} 129
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38 ## @end group
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39 ## @end example
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40 ##
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41 ## If @var{s} is a string matrix, return a column vector with one converted
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42 ## number per row of @var{s}; Invalid rows evaluate to NaN@.
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43 ##
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44 ## If @var{s} is a cell array of strings, return a column vector with one
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45 ## converted number per cell element in @var{s}.
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46 ## @seealso{dec2bin, base2dec, hex2dec}
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47 ## @end deftypefn
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48
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49 ## Author: Daniel Calvelo <dcalvelo@yahoo.com>
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50 ## Adapted-by: Paul Kienzle <pkienzle@kienzle.powernet.co.uk>
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51
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52 function d = bin2dec (s)
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53
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54 if (nargin != 1)
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55 print_usage ();
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56 endif
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57
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58 d = base2dec (s, 2);
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59
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60 endfunction
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61
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63 %!assert (bin2dec ("0000"), 0)
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64 %!assert (bin2dec ("1110"), 14)
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65 %!assert (bin2dec ("11111111111111111111111111111111111111111111111111111"), 2^53-1)
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66 %!assert (bin2dec ({"1110", "1111"}), [14; 15])
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67 %!assert (bin2dec ("1 0 1"), 5)
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68 %!assert (bin2dec (char ("1 0 1", " 1111")), [5; 15])
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69
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70 %%Test input validation
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71 %!error bin2dec ()
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72 %!error bin2dec (1)
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73 %!error bin2dec ("1", 2)
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