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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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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 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} int2str (@var{n}) |
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22 ## @deftypefnx {Function File} {} num2str (@var{x}, @var{precision}) |
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23 ## @deftypefnx {Function File} {} num2str (@var{x}, @var{format}) |
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24 ## Convert a number to a string. These functions are not very flexible, |
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25 ## but are provided for compatibility with @sc{Matlab}. For better control |
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26 ## over the results, use @code{sprintf} (@pxref{Formatted Output}). |
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27 ## @end deftypefn |
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28 ## @seealso{sprintf and num2str} |
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29 |
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30 ## Author: jwe |
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31 |
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32 function retval = int2str (x) |
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33 |
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34 ## XXX FIXME XXX -- this will fail for very large values. |
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35 |
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36 if (nargin == 1) |
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37 x = round (x); |
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38 t = abs (x(:)); |
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39 t = t(t != 0); |
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40 if (isempty (t)) |
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41 ## All zeros. |
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42 fmt = "%3d"; |
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43 else |
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44 ## Maybe have some zeros. |
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45 nan_inf = isinf (t) | isnan (t); |
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46 if (any (nan_inf)) |
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47 min_fw = 5; |
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48 else |
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49 min_fw = 3; |
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50 endif |
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51 t = t(! nan_inf); |
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52 if (isempty (t)) |
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53 ## Only zeros, Inf, and NaN. |
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54 fmt = "%5d"; |
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55 else |
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56 ## Could have anything. |
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57 fw = max (floor (max (log10 (t) + 3)), min_fw); |
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58 fmt = sprintf ("%%%dd", fw); |
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59 endif |
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60 endif |
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61 fmt = strcat (repmat (fmt, 1, columns (x)), "\n"); |
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62 tmp = sprintf (fmt, round (x.')); |
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63 tmp(length (tmp)) = ""; |
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64 retval = split (tmp, "\n"); |
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65 else |
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66 usage ("int2str (x)"); |
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67 endif |
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68 |
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69 endfunction |
