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1 ## Copyright (C) 1996, 1999, 2000, 2001, 2003, 2005, 2006, 2007 |
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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} {} dec2bin (@var{n}, @var{len}) |
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22 ## Return a binary number corresponding the nonnegative decimal number |
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23 ## @var{n}, as a string of ones and zeros. For example, |
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24 ## |
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25 ## @example |
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26 ## dec2bin (14) |
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27 ## @result{} "1110" |
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28 ## @end example |
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29 ## |
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30 ## If @var{n} is a vector, returns a string matrix, one row per value, |
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31 ## padded with leading zeros to the width of the largest value. |
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32 ## |
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33 ## The optional second argument, @var{len}, specifies the minimum |
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34 ## number of digits in the result. |
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35 ## @seealso{bin2dec, dec2base, base2dec, hex2dec, dec2hex} |
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36 ## @end deftypefn |
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37 |
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38 ## Author: Daniel Calvelo <dcalvelo@yahoo.com> |
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39 ## Adapted-by: Paul Kienzle <pkienzle@kienzle.powernet.co.uk> |
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40 |
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41 function retval = dec2bin (n, len) |
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42 |
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43 if (nargin == 1) |
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44 retval = dec2base (n, 2); |
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45 elseif (nargin == 2) |
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46 retval = dec2base (n, 2, len); |
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47 else |
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48 print_usage (); |
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49 endif |
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50 |
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51 endfunction |
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52 |
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53 %!assert(strcmp (dec2bin (14), "1110")); |
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54 |
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55 %!error dec2bin (); |
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56 |
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57 %!assert(strcmp (dec2bin (14, 6), "001110")); |
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58 |
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59 %!error dec2bin (1, 2, 3); |
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60 |