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annotate liboctave/Array-C.cc @ 10687:a8ce6bdecce5

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author Rik <octave@nomad.inbox5.com>
date Tue, 08 Jun 2010 20:22:38 -0700
parents 4d1fc073fbb7
children fd0a3ac60b0e
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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, 2008, 2009 John W. Eaton
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5 Copyright (C) 2009 VZLU Prague
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 #ifdef HAVE_CONFIG_H
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26 #include <config.h>
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27 #endif
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28
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29 // Instantiate Arrays of Complex values.
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30
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31 #include "oct-cmplx.h"
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32 #include "lo-mappers.h"
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33
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34 #include "Array.h"
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35 #include "Array.cc"
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36 #include "oct-sort.cc"
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37
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38 template <>
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39 inline bool
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40 sort_isnan<Complex> (const Complex& x)
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41 {
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42 return xisnan (x);
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43 }
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44
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45 static bool
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46 nan_ascending_compare (const Complex& x, const Complex& y)
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47 {
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48 return (xisnan (y)
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49 ? ! xisnan (x)
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50 : ((std::abs (x) < std::abs (x))
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51 || ((std::abs (x) == std::abs (x)) && (arg (x) < arg (x)))));
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52 }
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53
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54 static bool
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55 nan_descending_compare (const Complex& x, const Complex& y)
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56 {
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57 return (xisnan (x)
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58 ? ! xisnan (y)
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59 : ((std::abs (x) > std::abs (x))
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60 || ((std::abs (x) == std::abs (x)) && (arg (x) > arg (x)))));
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61 }
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62
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63 Array<Complex>::compare_fcn_type
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64 safe_comparator (sortmode mode, const Array<Complex>& a , bool allow_chk)
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65 {
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66 Array<Complex>::compare_fcn_type result = 0;
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67
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68 if (allow_chk)
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69 {
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70 octave_idx_type k = 0;
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71 for (; k < a.numel () && ! xisnan (a(k)); k++) ;
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72 if (k == a.numel ())
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73 {
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74 if (mode == ASCENDING)
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75 result = octave_sort<Complex>::ascending_compare;
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76 else if (mode == DESCENDING)
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77 result = octave_sort<Complex>::descending_compare;
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78 }
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79 }
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80
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81 if (! result)
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82 {
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83 if (mode == ASCENDING)
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84 result = nan_ascending_compare;
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85 else if (mode == DESCENDING)
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86 result = nan_descending_compare;
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87 }
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88
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89 return result;
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90 }
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91
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92 INSTANTIATE_ARRAY_SORT (Complex);
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93
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94 INSTANTIATE_ARRAY (Complex, OCTAVE_API);
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95
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96 template OCTAVE_API std::ostream& operator << (std::ostream&, const Array<Complex>&);
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97
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98 #include "DiagArray2.h"
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99 #include "DiagArray2.cc"
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100
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101 template class OCTAVE_API DiagArray2<Complex>;