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annotate liboctave/numeric/fCmplxSVD.h @ 20750:3339c9bdfe6a

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Activate FSAL property in dorpri timestepper * scripts/ode/private/runge_kutta_45_dorpri.m: don't compute first stage if values from previous iteration are passed. * scripts/ode/private/integrate_adaptive.m: do not update cmputed stages if timestep is rejected.
author Carlo de Falco <carlo.defalco@polimi.it>
date Sat, 03 Oct 2015 07:32:50 +0200
parents 4197fc428c7d
children
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1 /*
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2
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3 Copyright (C) 1994-2015 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 3 of the License, or (at your
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10 option) any 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, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if !defined (octave_fCmplxSVD_h)
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24 #define octave_fCmplxSVD_h 1
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25
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26 #include <iosfwd>
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27
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28 #include "fDiagMatrix.h"
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29 #include "fCMatrix.h"
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30 #include "dbleSVD.h"
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31
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32 class
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33 OCTAVE_API
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34 FloatComplexSVD
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35 {
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36 public:
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37
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38 FloatComplexSVD (void)
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39 : type_computed (), sigma (), left_sm (), right_sm ()
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40 { }
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41
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42 FloatComplexSVD (const FloatComplexMatrix& a,
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43 SVD::type svd_type = SVD::std,
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44 SVD::driver svd_driver = SVD::GESVD)
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45 : type_computed (), sigma (), left_sm (), right_sm ()
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46 {
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47 init (a, svd_type, svd_driver);
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48 }
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49
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50 FloatComplexSVD (const FloatComplexMatrix& a, octave_idx_type& info,
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51 SVD::type svd_type = SVD::std,
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52 SVD::driver svd_driver = SVD::GESVD)
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53 : type_computed (), sigma (), left_sm (), right_sm ()
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54 {
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55 info = init (a, svd_type, svd_driver);
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56 }
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57
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58 FloatComplexSVD (const FloatComplexSVD& a)
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59 : type_computed (a.type_computed), sigma (a.sigma),
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60 left_sm (a.left_sm), right_sm (a.right_sm)
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61 { }
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63 FloatComplexSVD& operator = (const FloatComplexSVD& a)
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64 {
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65 if (this != &a)
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66 {
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67 type_computed = a.type_computed;
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68 sigma = a.sigma;
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69 left_sm = a.left_sm;
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70 right_sm = a.right_sm;
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71 }
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72 return *this;
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73 }
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75 ~FloatComplexSVD (void) { }
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76
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77 FloatDiagMatrix singular_values (void) const { return sigma; }
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79 FloatComplexMatrix left_singular_matrix (void) const;
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80
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81 FloatComplexMatrix right_singular_matrix (void) const;
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82
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83 friend std::ostream& operator << (std::ostream& os,
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84 const FloatComplexSVD& a);
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85
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86 private:
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87
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88 SVD::type type_computed;
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89
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90 FloatDiagMatrix sigma;
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91 FloatComplexMatrix left_sm;
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92 FloatComplexMatrix right_sm;
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93
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94 octave_idx_type init (const FloatComplexMatrix& a,
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95 SVD::type svd_type = SVD::std,
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96 SVD::driver svd_driver = SVD::GESVD);
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97 };
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98
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99 #endif