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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_EIG_h) |
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25 #define octave_EIG_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 #include "CMatrix.h" |
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35 #include "CColVector.h" |
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36 |
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37 class 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 |
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46 EIG (const Matrix& a) { init (a); } |
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47 EIG (const Matrix& a, int& info) { info = init (a); } |
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48 |
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49 EIG (const ComplexMatrix& a) { init (a); } |
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50 EIG (const ComplexMatrix& a, int& info) { info = init (a); } |
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51 |
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52 EIG (const EIG& a) |
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53 { |
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54 lambda = a.lambda; |
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55 v = a.v; |
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56 } |
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57 |
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58 EIG& operator = (const EIG& a) |
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59 { |
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60 lambda = a.lambda; |
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61 v = a.v; |
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62 |
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63 return *this; |
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64 } |
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65 |
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66 ComplexColumnVector eigenvalues (void) const { return lambda; } |
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67 |
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68 ComplexMatrix eigenvectors (void) const { return v; } |
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69 |
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70 friend ostream& operator << (ostream& os, const EIG& a); |
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71 |
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72 private: |
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73 |
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74 int init (const Matrix& a); |
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75 int init (const ComplexMatrix& a); |
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76 |
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77 ComplexColumnVector lambda; |
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78 ComplexMatrix v; |
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79 }; |
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80 |
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81 #endif |
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82 |
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83 /* |
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84 ;;; Local Variables: *** |
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85 ;;; mode: C++ *** |
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86 ;;; page-delimiter: "^/\\*" *** |
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87 ;;; End: *** |
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88 */ |
