/usr/include/octave-4.0.0/octave/floatSVD.h is in liboctave-dev 4.0.0-3ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96  | /*
Copyright (C) 1994-2015 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.
*/
#if !defined (octave_floatSVD_h)
#define octave_floatSVD_h 1
#include <iosfwd>
#include "fDiagMatrix.h"
#include "fMatrix.h"
#include "dbleSVD.h"
class
OCTAVE_API
FloatSVD
{
public:
  FloatSVD (void) : type_computed (), sigma (), left_sm (), right_sm () { }
  FloatSVD (const FloatMatrix& a,
            SVD::type svd_type = SVD::std, SVD::driver svd_driver = SVD::GESVD)
    : type_computed (), sigma (), left_sm (), right_sm ()
  {
    init (a, svd_type, svd_driver);
  }
  FloatSVD (const FloatMatrix& a, octave_idx_type& info,
            SVD::type svd_type = SVD::std,
            SVD::driver svd_driver = SVD::GESVD)
    : type_computed (), sigma (), left_sm (), right_sm ()
  {
    info = init (a, svd_type, svd_driver);
  }
  FloatSVD (const FloatSVD& a)
    : type_computed (a.type_computed), sigma (a.sigma),
      left_sm (a.left_sm), right_sm (a.right_sm)
  { }
  FloatSVD& operator = (const FloatSVD& a)
  {
    if (this != &a)
      {
        type_computed = a.type_computed;
        sigma = a.sigma;
        left_sm = a.left_sm;
        right_sm = a.right_sm;
      }
    return *this;
  }
  ~FloatSVD (void) { }
  FloatDiagMatrix singular_values (void) const { return sigma; }
  FloatMatrix left_singular_matrix (void) const;
  FloatMatrix right_singular_matrix (void) const;
  friend std::ostream&  operator << (std::ostream& os, const FloatSVD& a);
private:
  SVD::type type_computed;
  FloatDiagMatrix sigma;
  FloatMatrix left_sm;
  FloatMatrix right_sm;
  octave_idx_type init (const FloatMatrix& a,
                        SVD::type svd_type = SVD::std,
                        SVD::driver svd_driver = SVD::GESVD);
};
#endif
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