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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 ## usage: hex2dec (h) |
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21 ## |
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22 ## Returns the decimal number corresponding to the hex number in |
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23 ## quotes. For example, hex2dec ("12B") and hex2dec ("12b") both |
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24 ## return 299. |
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25 |
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26 ## Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> |
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27 ## Adapted-By: jwe |
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28 |
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29 function d = hex2dec (h) |
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30 |
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31 if (nargin != 1) |
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32 usage ("hex2dec (x)"); |
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33 endif |
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34 |
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35 if (isstr (h)) |
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36 nr = rows (h); |
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37 d = zeros (nr, 1); |
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38 for i = 1:nr |
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39 s = h (i, :); |
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40 if (isxdigit (s)) |
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41 tmp = sscanf (s, "%x"); |
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42 if (isempty (tmp)) |
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43 error ("hex2dec: invalid conversion"); |
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44 else |
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45 d (i) = tmp; |
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46 endif |
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47 else |
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48 error ("hex2dec: argument must be a string of hexadecimal digits"); |
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49 endif |
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50 endfor |
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51 else |
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52 error ("hex2dec: expecting a string argument"); |
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53 endif |
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54 |
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55 endfunction |
