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annotate liboctave/fCmplxSVD.h @ 10601:3ce0c530a9c9

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implement svd_driver
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 03 May 2010 13:21:35 +0200
parents cbc402e64d83
children 367bfee35ba0
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1 /*
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2
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3 Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2003, 2004, 2005,
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4 2006, 2007, 2008 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 3 of the License, or (at your
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11 option) any 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, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if !defined (octave_FloatComplexSVD_h)
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25 #define octave_FloatComplexSVD_h 1
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26
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27 #include <iosfwd>
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28
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29 #include "fDiagMatrix.h"
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30 #include "fCMatrix.h"
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31 #include "dbleSVD.h"
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32
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33 class
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34 OCTAVE_API
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35 FloatComplexSVD
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36 {
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37 public:
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38
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39 FloatComplexSVD (void) { }
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40
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41 FloatComplexSVD (const FloatComplexMatrix& a,
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42 SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
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43 {
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44 init (a, svd_type, svd_driver);
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45 }
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46
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47 FloatComplexSVD (const FloatComplexMatrix& a, octave_idx_type& info,
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48 SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
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49 {
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50 info = init (a, svd_type, svd_driver);
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51 }
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52
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53 FloatComplexSVD (const FloatComplexSVD& a)
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54 : type_computed (a.type_computed),
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55 sigma (a.sigma), left_sm (a.left_sm), right_sm (a.right_sm) { }
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56
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57 FloatComplexSVD& operator = (const FloatComplexSVD& a)
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58 {
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59 if (this != &a)
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60 {
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61 type_computed = a.type_computed;
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62 sigma = a.sigma;
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63 left_sm = a.left_sm;
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64 right_sm = a.right_sm;
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65 }
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66 return *this;
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67 }
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68
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69 ~FloatComplexSVD (void) { }
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70
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71 FloatDiagMatrix singular_values (void) const { return sigma; }
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72
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73 FloatComplexMatrix left_singular_matrix (void) const;
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74
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75 FloatComplexMatrix right_singular_matrix (void) const;
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76
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77 friend std::ostream& operator << (std::ostream& os, const FloatComplexSVD& a);
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78
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79 private:
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80
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81 SVD::type type_computed;
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82
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83 FloatDiagMatrix sigma;
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84 FloatComplexMatrix left_sm;
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85 FloatComplexMatrix right_sm;
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86
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87 octave_idx_type init (const FloatComplexMatrix& a,
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88 SVD::type svd_type = SVD::std,
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89 SVD::driver svd_driver = SVD::GESVD);
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90 };
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91
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92 #endif