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1 ### Copyright (C) 1996 Kurt Hornik |
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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 2, or (at your option) |
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8 ### 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, write to the Free |
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17 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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18 ### 02111-1307, USA. |
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19 |
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20 function y = bin2dec (x) |
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21 |
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22 ## usage: bin2dec (x) |
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23 ## |
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24 ## Returns the decimal number corresponding to the binary number in |
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25 ## quotes. For example, bin2dec ("1110") returns 14. |
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26 |
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27 ## Original version by Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>. |
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28 |
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29 if (nargin != 1) |
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30 usage ("bin2dec (x)"); |
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31 endif |
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32 |
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33 x = toascii (x) - toascii ("0"); |
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34 |
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35 if (all (x == 0 | x == 1)) |
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36 y = sum ((x .* (ones (rows (x), 1) * 2.^((length (x) - 1) : -1 : 0)))')'; |
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37 else |
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38 error ("bin2dec: argument must be a string of zeros and ones"); |
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39 endif |
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40 |
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41 endfunction |
