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annotate liboctave/Array-f.cc @ 8721:e9cb742df9eb

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imported patch sort3.diff
author Jaroslav Hajek <highegg@gmail.com>
date Wed, 11 Feb 2009 15:25:53 +0100
parents 739141cde75a
children d5af326a3ede
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1 /*
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2
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3 Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2003, 2004,
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4 2005, 2006, 2007 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 // Instantiate Arrays of float values.
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29
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30 #include "lo-ieee.h"
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31 #include "Array.h"
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32 #include "Array.cc"
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33 #include "oct-locbuf.h"
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34
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35 #define INLINE_ASCENDING_SORT
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36 #define INLINE_DESCENDING_SORT
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37 #include "oct-sort.cc"
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38
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39 template <>
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40 inline bool _sort_isnan (float x)
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41 {
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42 return lo_ieee_isnan (x);
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43 }
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44
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45 static bool nan_ascending_compare (float x, float y)
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46 {
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47 return lo_ieee_isnan (y) ? ! lo_ieee_isnan (x) : x < y;
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48 }
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49
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50 static bool nan_descending_compare (float x, float y)
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51 {
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52 return lo_ieee_isnan (x) ? ! lo_ieee_isnan (y) : x > y;
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53 }
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54
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55 bool (*_sortrows_comparator (sortmode mode,
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56 const Array<float>& a , bool allow_chk))
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57 (float, float)
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58 {
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59 bool (*result) (float, float) = 0;
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60
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61 if (allow_chk)
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62 {
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63 octave_idx_type k = 0;
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64 for (; k < a.numel () && ! xisnan (a(k)); k++) ;
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65 if (k == a.numel ())
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66 {
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67 if (mode == ASCENDING)
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68 result = octave_sort<float>::ascending_compare;
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69 else if (mode == DESCENDING)
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70 result = octave_sort<float>::descending_compare;
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71 }
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72 }
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73
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74 if (! result)
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75 {
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76 if (mode == ASCENDING)
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77 result = nan_ascending_compare;
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78 else if (mode == DESCENDING)
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79 result = nan_descending_compare;
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80 }
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81
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82 return result;
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83 }
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84
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85 INSTANTIATE_ARRAY_SORT (float);
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86
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87 INSTANTIATE_ARRAY (float, OCTAVE_API);
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88
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89 #include "Array2.h"
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90
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91 template class OCTAVE_API Array2<float>;
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92
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93 #include "ArrayN.h"
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94 #include "ArrayN.cc"
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95
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96 template class OCTAVE_API ArrayN<float>;
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97
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98 template OCTAVE_API std::ostream& operator << (std::ostream&, const ArrayN<float>&);
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99
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100 #include "DiagArray2.h"
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101 #include "DiagArray2.cc"
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102
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103 template class OCTAVE_API DiagArray2<float>;
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104
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105 /*
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106 ;;; Local Variables: ***
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107 ;;; mode: C++ ***
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108 ;;; End: ***
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109 */