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annotate liboctave/floatSVD.h @ 10843:229675bb7647 ss-3-3-52

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version is now 3.3.52
author John W. Eaton <jwe@octave.org>
date Sun, 01 Aug 2010 11:49:45 -0400
parents 3ce0c530a9c9
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_FloatSVD_h)
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25 #define octave_FloatSVD_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 "fMatrix.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 FloatSVD
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36 {
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37 public:
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38
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39 FloatSVD (void) : sigma (), left_sm (), right_sm () { }
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40
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41 FloatSVD (const FloatMatrix& a,
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42 SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
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43 { init (a, svd_type, svd_driver); }
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44
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45 FloatSVD (const FloatMatrix& a, octave_idx_type& info,
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46 SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
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47 {
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48 info = init (a, svd_type, svd_driver);
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49 }
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50
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51 FloatSVD (const FloatSVD& a)
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52 : type_computed (a.type_computed),
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53 sigma (a.sigma), left_sm (a.left_sm), right_sm (a.right_sm) { }
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54
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55 FloatSVD& operator = (const FloatSVD& a)
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56 {
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57 if (this != &a)
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58 {
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59 type_computed = a.type_computed;
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60 sigma = a.sigma;
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61 left_sm = a.left_sm;
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62 right_sm = a.right_sm;
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63 }
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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 ~FloatSVD (void) { }
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69
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70 FloatDiagMatrix singular_values (void) const { return sigma; }
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71
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72 FloatMatrix left_singular_matrix (void) const;
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73
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74 FloatMatrix right_singular_matrix (void) const;
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75
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76 friend std::ostream& operator << (std::ostream& os, const FloatSVD& a);
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77
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78 private:
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79
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80 SVD::type type_computed;
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81
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82 FloatDiagMatrix sigma;
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83 FloatMatrix left_sm;
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84 FloatMatrix right_sm;
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85
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86 octave_idx_type init (const FloatMatrix& a,
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87 SVD::type svd_type = SVD::std,
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88 SVD::driver svd_driver = SVD::GESVD);
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89 };
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90
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91 #endif