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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_EIG_h) |
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24 #define octave_EIG_h 1 |
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25 |
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26 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <iostream> |
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31 |
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32 #include "dMatrix.h" |
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33 #include "CMatrix.h" |
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34 #include "CColVector.h" |
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35 |
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36 class |
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37 EIG |
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38 { |
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39 friend class Matrix; |
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40 friend class ComplexMatrix; |
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41 |
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42 public: |
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43 |
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44 EIG (void) |
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45 : lambda (), v () { } |
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46 |
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47 EIG (const Matrix& a, bool calc_eigenvectors = true) |
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48 { init (a, calc_eigenvectors); } |
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49 |
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50 EIG (const Matrix& a, int& info, bool calc_eigenvectors = true) |
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51 { info = init (a, calc_eigenvectors); } |
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52 |
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53 EIG (const ComplexMatrix& a, bool calc_eigenvectors = true) |
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54 { init (a, calc_eigenvectors); } |
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55 |
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56 EIG (const ComplexMatrix& a, int& info, bool calc_eigenvectors = true) |
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57 { info = init (a, calc_eigenvectors); } |
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58 |
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59 EIG (const EIG& a) |
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60 : lambda (a.lambda), v (a.v) { } |
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61 |
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62 EIG& operator = (const EIG& a) |
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63 { |
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64 if (this != &a) |
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65 { |
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66 lambda = a.lambda; |
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67 v = a.v; |
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68 } |
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69 return *this; |
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70 } |
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71 |
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72 ~EIG (void) { } |
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73 |
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74 ComplexColumnVector eigenvalues (void) const { return lambda; } |
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75 |
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76 ComplexMatrix eigenvectors (void) const { return v; } |
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77 |
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78 friend std::ostream& operator << (std::ostream& os, const EIG& a); |
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79 |
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80 private: |
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81 |
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82 ComplexColumnVector lambda; |
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83 ComplexMatrix v; |
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84 |
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85 int init (const Matrix& a, bool calc_eigenvectors); |
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86 int init (const ComplexMatrix& a, bool calc_eigenvectors); |
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87 |
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88 int symmetric_init (const Matrix& a, bool calc_eigenvectors); |
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89 int hermitian_init (const ComplexMatrix& a, bool calc_eigenvectors); |
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90 }; |
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91 |
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92 #endif |
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93 |
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94 /* |
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95 ;;; Local Variables: *** |
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96 ;;; mode: C++ *** |
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97 ;;; End: *** |
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98 */ |
