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annotate liboctave/dbleSCHUR.h @ 12312:b10ea6efdc58 release-3-4-x ss-3-3-91

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version is now 3.3.91
author John W. Eaton <jwe@octave.org>
date Mon, 31 Jan 2011 08:36:58 -0500
parents 12df7854fa7c
children 72c96de7a403
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1 /*
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2
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3 Copyright (C) 1994-2011 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if !defined (octave_SCHUR_h)
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24 #define octave_SCHUR_h 1
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25
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26 #include <iosfwd>
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27 #include <string>
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28
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29 #include "dMatrix.h"
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30
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31 class
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32 OCTAVE_API
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33 SCHUR
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34 {
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35 public:
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36
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37 SCHUR (void) : schur_mat (), unitary_mat (), selector (0) { }
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38
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39 SCHUR (const Matrix& a, const std::string& ord, bool calc_unitary = true)
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40 : schur_mat (), unitary_mat (), selector (0)
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41 {
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42 init (a, ord, calc_unitary);
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43 }
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44
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45 SCHUR (const Matrix& a, const std::string& ord, int& info,
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46 bool calc_unitary = true)
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47 : schur_mat (), unitary_mat (), selector (0)
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48 {
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49 info = init (a, ord, calc_unitary);
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50 }
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51
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52 SCHUR (const SCHUR& a)
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53 : schur_mat (a.schur_mat), unitary_mat (a.unitary_mat), selector (0)
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54 { }
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55
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56 SCHUR (const Matrix& s, const Matrix& u);
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57
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58 SCHUR& operator = (const SCHUR& a)
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59 {
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60 if (this != &a)
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61 {
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62 schur_mat = a.schur_mat;
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63 unitary_mat = a.unitary_mat;
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64 }
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65 return *this;
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66 }
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67
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68 ~SCHUR (void) { }
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69
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70 Matrix schur_matrix (void) const { return schur_mat; }
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71
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72 Matrix unitary_matrix (void) const { return unitary_mat; }
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74 friend std::ostream& operator << (std::ostream& os, const SCHUR& a);
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75
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76 typedef octave_idx_type (*select_function) (const double&, const double&);
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77
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78 private:
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79
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80 Matrix schur_mat;
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81 Matrix unitary_mat;
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82
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83 select_function selector;
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84
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85 octave_idx_type init (const Matrix& a, const std::string& ord, bool calc_unitary);
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86 };
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87
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88 #endif