/usr/include/octave-3.8.1/octave/SparseQR.h is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2005-2013 David Bateman
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_SparseQR_h)
#define octave_SparseQR_h 1
#include <iosfwd>
#include "dMatrix.h"
#include "CMatrix.h"
#include "dSparse.h"
#include "CSparse.h"
#include "oct-sparse.h"
#ifdef USE_64_BIT_IDX_T
#define CXSPARSE_DNAME(name) cs_dl ## name
#else
#define CXSPARSE_DNAME(name) cs_di ## name
#endif
class
OCTAVE_API
SparseQR
{
protected:
class SparseQR_rep
{
public:
SparseQR_rep (const SparseMatrix& a, int order);
~SparseQR_rep (void);
#ifdef HAVE_CXSPARSE
bool ok (void) const { return (N && S); }
#else
bool ok (void) const { return false; }
#endif
SparseMatrix V (void) const;
ColumnVector Pinv (void) const;
ColumnVector P (void) const;
SparseMatrix R (const bool econ) const;
Matrix C (const Matrix &b) const;
Matrix Q (void) const;
octave_refcount<int> count;
octave_idx_type nrows;
#ifdef HAVE_CXSPARSE
CXSPARSE_DNAME (s) *S;
CXSPARSE_DNAME (n) *N;
#endif
private:
// No copying!
SparseQR_rep (const SparseQR_rep&);
SparseQR_rep& operator = (const SparseQR_rep&);
};
private:
SparseQR_rep *rep;
public:
SparseQR (void) : rep (new SparseQR_rep (SparseMatrix (), 0)) { }
SparseQR (const SparseMatrix& a, int order = 0) :
rep (new SparseQR_rep (a, order)) { }
SparseQR (const SparseQR& a) : rep (a.rep) { rep->count++; }
~SparseQR (void)
{
if (--rep->count == 0)
delete rep;
}
SparseQR& operator = (const SparseQR& a)
{
if (this != &a)
{
if (--rep->count == 0)
delete rep;
rep = a.rep;
rep->count++;
}
return *this;
}
bool ok (void) const { return rep->ok (); }
SparseMatrix V (void) const { return rep->V (); }
ColumnVector Pinv (void) const { return rep->P (); }
ColumnVector P (void) const { return rep->P (); }
SparseMatrix R (const bool econ = false) const { return rep->R(econ); }
Matrix C (const Matrix &b) const { return rep->C(b); }
Matrix Q (void) const { return rep->Q (); }
friend Matrix qrsolve (const SparseMatrix &a, const Matrix &b,
octave_idx_type &info);
friend SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b,
octave_idx_type &info);
friend ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b,
octave_idx_type &info);
friend SparseComplexMatrix qrsolve (const SparseMatrix &a,
const SparseComplexMatrix &b,
octave_idx_type &info);
protected:
#ifdef HAVE_CXSPARSE
CXSPARSE_DNAME (s) * S (void) { return rep->S; }
CXSPARSE_DNAME (n) * N (void) { return rep->N; }
#endif
};
// Publish externally used friend functions.
extern Matrix qrsolve (const SparseMatrix &a, const Matrix &b,
octave_idx_type &info);
extern Matrix qrsolve (const SparseMatrix &a, const MArray<double> &b,
octave_idx_type &info);
extern SparseMatrix qrsolve (const SparseMatrix &a, const SparseMatrix &b,
octave_idx_type &info);
extern ComplexMatrix qrsolve (const SparseMatrix &a, const ComplexMatrix &b,
octave_idx_type &info);
extern ComplexMatrix qrsolve (const SparseMatrix &a, const MArray<Complex> &b,
octave_idx_type &info);
extern SparseComplexMatrix qrsolve (const SparseMatrix &a,
const SparseComplexMatrix &b,
octave_idx_type &info);
#endif
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