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- ## Copyright (C) 1996 Kurt Hornik
- ##
- ## This file is part of Octave.
- ##
- ## Octave is free software; you can redistribute it and/or modify it
- ## under the terms of the GNU General Public License as published by
- ## the Free Software Foundation; either version 2, or (at your option)
- ## any later version.
- ##
- ## Octave is distributed in the hope that it will be useful, but
- ## WITHOUT ANY WARRANTY; without even the implied warranty of
- ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ## General Public License for more details.
- ##
- ## You should have received a copy of the GNU General Public License
- ## along with Octave; see the file COPYING. If not, write to the Free
- ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- ## 02111-1307, USA.
-
- ## usage: dec2bin (x)
- ##
- ## Returns the binary number corresponding to the nonnegative integer
- ## x. For example, dec2bin (14) returns "1110".
-
- ## Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at>
- ## Adapted-By: jwe
-
- function y = dec2bin (x)
-
- if (nargin != 1)
- usage ("dec2bin (x)");
- endif
-
- [nr, nc] = size (x);
-
- len = nr * nc;
-
- x = reshape (x, 1, len);
-
- eleo = empty_list_elements_ok;
- unwind_protect
- empty_list_elements_ok = 1;
- y = [];
- for i = 1:len
- tmp = x (i);
- if (tmp == round (tmp) && tmp >= 0)
- while (tmp >= 2)
- z = fix (tmp ./ 2);
- y = [y, tmp - 2 * z];
- tmp = z;
- endwhile
- y = [y, tmp];
- else
- error ("dec2hex: invalid conversion");
- endif
- endfor
- y = fliplr (y);
- y = setstr (y + toascii ("0"));
- unwind_protect_cleanup
- empty_list_elements_ok = eleo;
- end_unwind_protect
-
- endfunction
-