GNU Octave  3.8.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
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floatSVD.h
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1 /*
2 
3 Copyright (C) 1994-2013 John W. Eaton
4 
5 This file is part of Octave.
6 
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
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17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20 
21 */
22 
23 #if !defined (octave_floatSVD_h)
24 #define octave_floatSVD_h 1
25 
26 #include <iosfwd>
27 
28 #include "fDiagMatrix.h"
29 #include "fMatrix.h"
30 #include "dbleSVD.h"
31 
32 class
33 OCTAVE_API
35 {
36 public:
37 
38  FloatSVD (void) : type_computed (), sigma (), left_sm (), right_sm () { }
39 
40  FloatSVD (const FloatMatrix& a,
41  SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
42  : type_computed (), sigma (), left_sm (), right_sm ()
43  {
44  init (a, svd_type, svd_driver);
45  }
46 
48  SVD::type svd_type = SVD::std,
49  SVD::driver svd_driver = SVD::GESVD)
50  : type_computed (), sigma (), left_sm (), right_sm ()
51  {
52  info = init (a, svd_type, svd_driver);
53  }
54 
55  FloatSVD (const FloatSVD& a)
56  : type_computed (a.type_computed), sigma (a.sigma),
57  left_sm (a.left_sm), right_sm (a.right_sm)
58  { }
59 
61  {
62  if (this != &a)
63  {
64  type_computed = a.type_computed;
65  sigma = a.sigma;
66  left_sm = a.left_sm;
67  right_sm = a.right_sm;
68  }
69 
70  return *this;
71  }
72 
73  ~FloatSVD (void) { }
74 
75  FloatDiagMatrix singular_values (void) const { return sigma; }
76 
77  FloatMatrix left_singular_matrix (void) const;
78 
79  FloatMatrix right_singular_matrix (void) const;
80 
81  friend std::ostream& operator << (std::ostream& os, const FloatSVD& a);
82 
83 private:
84 
86 
90 
91  octave_idx_type init (const FloatMatrix& a,
92  SVD::type svd_type = SVD::std,
93  SVD::driver svd_driver = SVD::GESVD);
94 };
95 
96 #endif