annotate scripts/strings/hex2dec.m @ 20170:af2b7695f1c4 draft default tip @

gallery.m: clean and vectorize part of qmult. * scripts/special-matrix/gallery.m: make qmult() follow Octave guidelines, vectorize last for loop in qmult().
author Antonio Pino Robles <data.script93@gmail.com>
date Thu, 28 May 2015 18:32:47 +0200
parents 9fc020886ae9
children df437a52bcaf
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1 ## Copyright (C) 1996-2015 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} {} hex2dec (@var{s})
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21 ## Return the integer corresponding to the hexadecimal 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 ## hex2dec ("12B")
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27 ## @result{} 299
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28 ## hex2dec ("12b")
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29 ## @result{} 299
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30 ## @end group
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31 ## @end example
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32 ##
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33 ## If @var{s} is a string matrix, return a column vector with one converted
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34 ## number per row of @var{s}; Invalid rows evaluate to NaN@.
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35 ##
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36 ## If @var{s} is a cell array of strings, return a column vector with one
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37 ## converted number per cell element in @var{s}.
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38 ##
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39 ## @seealso{dec2hex, base2dec, bin2dec}
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40 ## @end deftypefn
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41
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42 ## Author: Daniel Calvelo <dcalvelo@yahoo.com>
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43 ## Adapted-by: Paul Kienzle <pkienzle@kienzle.powernet.co.uk>
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44
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45 function d = hex2dec (s)
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46
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47 if (nargin != 1)
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48 print_usage ();
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49 endif
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50
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51 d = base2dec (s, 16);
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52
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53 endfunction
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56 %!assert (hex2dec ("0000"), 0)
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57 %!assert (hex2dec ("1FFFFFFFFFFFFF"), 2^53-1)
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58 %!assert (hex2dec (["12b"; "12B"]), [299; 299])
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59 %!assert (hex2dec ({"A1", "1A"}), [161; 26])
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61 ## Test input validation
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62 %!error hex2dec ()
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63 %!error hex2dec (1)
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64 %!error hex2dec ("1", 2)
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65