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imported patch sort3.diff
author Jaroslav Hajek <highegg@gmail.com>
date Wed, 11 Feb 2009 15:25:53 +0100
parents 314be237cd5b
children d5af326a3ede
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1 /*
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2
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3 Copyright (C) 1994, 1995, 1996, 1997, 1998, 2001, 2003, 2004, 2005,
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4 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 Complex values.
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29
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30 #include "oct-cmplx.h"
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31 #include "lo-mappers.h"
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32
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33 #include "Array.h"
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34 #include "Array.cc"
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35 #include "oct-sort.cc"
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36
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37 template <>
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38 inline bool _sort_isnan (Complex x)
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39 {
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40 return xisnan (x);
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41 }
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42
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43 template <>
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44 bool
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45 octave_sort<Complex>::ascending_compare (Complex a, Complex b)
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46 {
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47 return ((std::abs (a) < std::abs (b))
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48 || ((std::abs (a) == std::abs (b)) && (arg (a) < arg (b))));
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49 }
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50
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51 template <>
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52 bool
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53 octave_sort<Complex>::descending_compare (Complex a, Complex b)
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54 {
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55 return ((std::abs (a) > std::abs (b))
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56 || ((std::abs (a) == std::abs (b)) && (arg (a) > arg (b))));
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57 }
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58
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59 static bool nan_ascending_compare (Complex x, Complex y)
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60 {
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61 return xisnan (y) ? ! xisnan (x) : ((std::abs (x) < std::abs (x))
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62 || ((std::abs (x) == std::abs (x)) && (arg (x) < arg (x))));
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63 }
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64
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65 static bool nan_descending_compare (Complex x, Complex y)
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66 {
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67 return xisnan (x) ? ! xisnan (y) : ((std::abs (x) > std::abs (x))
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68 || ((std::abs (x) == std::abs (x)) && (arg (x) > arg (x))));
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69 }
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70
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71 bool (*_sortrows_comparator (sortmode mode,
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72 const Array<Complex>& a , bool allow_chk))
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73 (Complex, Complex)
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74 {
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75 bool (*result) (Complex, Complex) = 0;
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76
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77 if (allow_chk)
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78 {
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79 octave_idx_type k = 0;
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80 for (; k < a.numel () && ! xisnan (a(k)); k++) ;
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81 if (k == a.numel ())
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82 {
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83 if (mode == ASCENDING)
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84 result = octave_sort<Complex>::ascending_compare;
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85 else if (mode == DESCENDING)
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86 result = octave_sort<Complex>::descending_compare;
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87 }
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88 }
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89
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90 if (! result)
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91 {
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92 if (mode == ASCENDING)
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93 result = nan_ascending_compare;
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94 else if (mode == DESCENDING)
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95 result = nan_descending_compare;
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96 }
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97
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98 return result;
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99 }
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100
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101 INSTANTIATE_ARRAY_SORT (Complex);
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102
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103 INSTANTIATE_ARRAY (Complex, OCTAVE_API);
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104
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105 #include "Array2.h"
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106
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107 template class OCTAVE_API Array2<Complex>;
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108
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109 #include "ArrayN.h"
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110 #include "ArrayN.cc"
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111
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112 template class OCTAVE_API ArrayN<Complex>;
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113
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114 template OCTAVE_API std::ostream& operator << (std::ostream&, const ArrayN<Complex>&);
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115
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116 #include "DiagArray2.h"
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117 #include "DiagArray2.cc"
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118
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119 template class OCTAVE_API DiagArray2<Complex>;
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120
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121 /*
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122 ;;; Local Variables: ***
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123 ;;; mode: C++ ***
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124 ;;; End: ***
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125 */