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1 // -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 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 2, or (at your option) any |
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11 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, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_QR_h) |
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25 #define octave_QR_h 1 |
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26 |
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27 #if defined (__GNUG__) |
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28 #pragma interface |
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29 #endif |
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30 |
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31 class ostream; |
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32 |
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33 #include "dMatrix.h" |
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34 |
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35 class QR |
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36 { |
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37 public: |
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38 |
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39 enum type |
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40 { |
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41 std, |
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42 raw, |
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43 economy, |
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44 }; |
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45 |
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46 QR (void) {} |
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47 |
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48 QR (const Matrix& A, type qr_type = QR::std); |
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49 |
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50 QR (const QR& a); |
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51 |
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52 QR& operator = (const QR& a); |
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53 |
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54 Matrix Q (void) const; |
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55 Matrix R (void) const; |
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56 |
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57 friend ostream& operator << (ostream& os, const QR& a); |
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58 |
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59 protected: |
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60 |
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61 Matrix q; |
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62 Matrix r; |
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63 }; |
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64 |
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65 inline QR::QR (const QR& a) |
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66 { |
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67 q = a.q; |
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68 r = a.r; |
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69 } |
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70 |
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71 inline QR& QR::operator = (const QR& a) |
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72 { |
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73 q = a.q; |
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74 r = a.r; |
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75 return *this; |
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76 } |
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77 |
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78 inline Matrix QR::Q (void) const |
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79 { |
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80 return q; |
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81 } |
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82 |
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83 inline Matrix QR::R (void) const |
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84 { |
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85 return r; |
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86 } |
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87 |
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88 #endif |
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89 |
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90 /* |
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91 ;;; Local Variables: *** |
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92 ;;; mode: C++ *** |
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93 ;;; page-delimiter: "^/\\*" *** |
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94 ;;; End: *** |
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95 */ |
