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1 ## Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2003, |
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2 ## 2004, 2005, 2006, 2007 John W. Eaton |
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3 ## |
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4 ## This file is part of Octave. |
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5 ## |
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6 ## Octave is free software; you can redistribute it and/or modify it |
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7 ## under the terms of the GNU General Public License as published by |
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8 ## the Free Software Foundation; either version 3 of the License, or (at |
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9 ## your option) any later version. |
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10 ## |
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11 ## Octave is distributed in the hope that it will be useful, but |
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 ## General Public License for more details. |
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15 ## |
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16 ## You should have received a copy of the GNU General Public License |
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17 ## along with Octave; see the file COPYING. If not, see |
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18 ## <http://www.gnu.org/licenses/>. |
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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 ## Convert an integer to a string. This function is not very flexible. |
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23 ## For better control over the results, use @code{sprintf} |
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24 ## (@pxref{Formatted Output}). |
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25 ## @seealso{sprintf, num2str} |
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26 ## @end deftypefn |
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27 |
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28 ## Author: jwe |
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29 |
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30 function retval = int2str (x) |
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31 |
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32 if (nargin == 1) |
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33 x = round (real(x)); |
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34 sz = size(x); |
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35 nd = ndims (x); |
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36 nc = columns (x); |
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37 if (nc > 1) |
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38 idx = cell (); |
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39 for i = 1:nd |
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40 idx {i} = 1:sz(i); |
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41 endfor |
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42 idx(2) = 1; |
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43 ifmt = get_fmt (x(idx{:}), 0); |
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44 idx(2) = 2:sz(2); |
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45 rfmt = get_fmt (x(idx{:}), 2); |
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46 fmt = strcat (ifmt, repmat (rfmt, 1, nc-1), "\n") |
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47 else |
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48 fmt = strcat (get_fmt (x, 0), "\n"); |
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49 endif |
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50 tmp = sprintf (fmt, permute (x, [2, 1, 3 : nd])); |
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51 tmp(end) = ""; |
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52 retval = split (tmp, "\n"); |
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53 else |
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54 print_usage (); |
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55 endif |
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56 |
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57 endfunction |
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58 |
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59 function fmt = get_fmt (x, sep) |
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60 |
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61 t = x(:); |
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62 t = t(t != 0); |
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63 if (isempty (t)) |
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64 ## All zeros. |
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65 fmt = sprintf ("%%%dd", 1 + sep); |
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66 else |
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67 ## Maybe have some zeros. |
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68 nan_inf = isinf (t) | isnan (t); |
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69 if (any (nan_inf)) |
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70 if (any (t(nan_inf) < 0)) |
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71 min_fw = 4 + sep; |
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72 else |
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73 min_fw = 3 + sep; |
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74 endif |
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75 else |
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76 min_fw = 1 + sep; |
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77 endif |
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78 t = t(! nan_inf); |
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79 if (isempty (t)) |
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80 ## Only zeros, Inf, and NaN. |
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81 fmt = sprintf ("%%%dd", min_fw); |
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82 else |
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83 ## Could have anything. |
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84 tfw = floor (log10 (abs (t))) + 1 + sep; |
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85 fw = max (tfw); |
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86 if (any (t(tfw == fw) < 0)) |
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87 fw++; |
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88 endif |
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89 fmt = sprintf ("%%%dd", max (fw, min_fw)); |
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90 endif |
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91 endif |
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92 |
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93 endfunction |
