/usr/include/octave-4.2.2/octave/eigs-base.h is in liboctave-dev 4.2.2-1ubuntu1.
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) 2005-2017 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_eigs_base_h)
#define octave_eigs_base_h 1
#include "octave-config.h"
#include <iosfwd>
class ColumnVector;
class ComplexColumnVector;
class Matrix;
class ComplexMatrix;
typedef ColumnVector (*EigsFunc) (const ColumnVector& x, int& eigs_error);
typedef ComplexColumnVector (*EigsComplexFunc) (const ComplexColumnVector& x,
int& eigs_error);
template <typename M>
octave_idx_type
EigsRealSymmetricMatrix (const M& m, const std::string typ,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, Matrix& eig_vec,
ColumnVector& eig_val, const M& _b,
ColumnVector& permB, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
template <typename M>
octave_idx_type
EigsRealSymmetricMatrixShift (const M& m, double sigma,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, Matrix& eig_vec,
ColumnVector& eig_val, const M& _b,
ColumnVector& permB, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
extern OCTAVE_API octave_idx_type
EigsRealSymmetricFunc (EigsFunc fun, octave_idx_type n,
const std::string& _typ, double sigma,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, Matrix& eig_vec,
ColumnVector& eig_val, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool /* cholB */, int disp, int maxit);
template <typename M>
octave_idx_type
EigsRealNonSymmetricMatrix (const M& m, const std::string typ,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val, const M& _b,
ColumnVector& permB, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
template <typename M>
octave_idx_type
EigsRealNonSymmetricMatrixShift (const M& m, double sigmar,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info,
ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val, const M& _b,
ColumnVector& permB, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
extern OCTAVE_API octave_idx_type
EigsRealNonSymmetricFunc (EigsFunc fun, octave_idx_type n,
const std::string& _typ, double sigmar,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val, ColumnVector& resid,
std::ostream& os, double tol, bool rvec,
bool /* cholB */, int disp, int maxit);
template <typename M>
octave_idx_type
EigsComplexNonSymmetricMatrix (const M& m, const std::string typ,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val, const M& _b,
ColumnVector& permB,
ComplexColumnVector& cresid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
template <typename M>
octave_idx_type
EigsComplexNonSymmetricMatrixShift (const M& m, Complex sigma,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info,
ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val, const M& _b,
ColumnVector& permB,
ComplexColumnVector& cresid,
std::ostream& os, double tol, bool rvec,
bool cholB, int disp, int maxit);
extern OCTAVE_API octave_idx_type
EigsComplexNonSymmetricFunc (EigsComplexFunc fun, octave_idx_type n,
const std::string& _typ, Complex sigma,
octave_idx_type k, octave_idx_type p,
octave_idx_type& info, ComplexMatrix& eig_vec,
ComplexColumnVector& eig_val,
ComplexColumnVector& cresid, std::ostream& os,
double tol, bool rvec, bool /* cholB */,
int disp, int maxit);
#endif
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