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annotate scripts/strings/bin2dec.m @ 11172:7e8ce65f73cf

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Overhaul functions used to convert between number bases.
author Rik <octave@nomad.inbox5.com>
date Sun, 31 Oct 2010 07:30:15 -0700
parents 693e22af08ae
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John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 1996, 2000, 2001, 2005, 2006, 2007, 2008, 2009
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2 ## Daniel Calvelo
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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 {Function File} {} bin2dec (@var{s})
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22 ## Return the decimal number corresponding to the binary number represented
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23 ## by the string @var{s}. For example:
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24 ##
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25 ## @example
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26 ## @group
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27 ## bin2dec ("1110")
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28 ## @result{} 14
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29 ## @end group
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30 ## @end example
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31 ##
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32 ## If @var{s} is a string matrix, return a column vector of converted
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33 ## numbers, one per row of @var{s}. Invalid rows evaluate to NaN.
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34 ## @seealso{dec2bin, base2dec, hex2dec}
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35 ## @end deftypefn
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36
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37 ## Author: Daniel Calvelo <dcalvelo@yahoo.com>
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38 ## Adapted-by: Paul Kienzle <pkienzle@kienzle.powernet.co.uk>
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39
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40 function d = bin2dec (s)
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41
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42 if (nargin == 1 && ischar (s))
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43 d = base2dec (s, 2);
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44 else
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45 print_usage ();
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46 endif
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47
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48 endfunction
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49
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50 %!assert(bin2dec ("0000"), 0);
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51 %!assert(bin2dec ("1110"), 14);
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52 %!assert(bin2dec ("11111111111111111111111111111111111111111111111111111"), 2^53-1);
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53
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54 %%Test input validation
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55 %!error bin2dec ();
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56 %!error bin2dec (1);
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57 %!error bin2dec ("1", 2);
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