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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 function d = hex2dec (h) |
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27 |
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28 ## Original version by Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>. |
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29 |
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30 if (nargin != 1) |
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31 usage ("hex2dec (x)"); |
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32 endif |
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33 |
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34 if (isstr (h)) |
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35 nr = rows (h); |
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36 d = zeros (nr, 1); |
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37 for i = 1:nr |
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38 s = h (i, :); |
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39 if (isxdigit (s)) |
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40 tmp = sscanf (s, "%x"); |
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41 if (isempty (tmp)) |
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42 error ("hex2dec: invalid conversion"); |
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43 else |
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44 d (i) = tmp; |
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45 endif |
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46 else |
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47 error ("hex2dec: argument must be a string of hexadecimal digits"); |
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48 endif |
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49 endfor |
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50 else |
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51 error ("hex2dec: expecting a string argument"); |
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52 endif |
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53 |
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54 endfunction |
