/usr/include/rheolef/eye.h is in librheolef-dev 6.6-1build2.
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 | # ifndef _RHEOLEF_EYE_H
# define _RHEOLEF_EYE_H
///
/// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito <Pierre.Saramito@imag.fr>
///
/// Rheolef 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 2 of the License, or
/// (at your option) any later version.
///
/// Rheolef 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 Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///
/// =========================================================================
# include "rheolef/vec.h"
# include "rheolef/solver.h"
namespace rheolef {
/*Class:eye
NAME: @code{eye} - the identity matrix
DESCRIPTION:
Following @code{octave}, the name @code{eye_rep} class is used in place of I to denote identity matrices
because I is often used as a subscript or as sqrt(-1). The dimensions of @code{eye_rep} are
determined by the context.
This class is here usefull in the context of preconditioner interfaces: it allows
calls of algorithms without any preconditioners, e.g.
@example
int status = pcg (a, x, b, eye_rep<Float>(), 100, 1e-7);
@end example
AUTHOR:
Pierre Saramito
Pierre.Saramito@imag.fr
LMC-IMAG, 38041 Grenoble cedex 9, France
DATE:
28 january 1997
End:
*/
//<eye:
template<class T, class M = rheo_default_memory_model>
class eye_rep : public solver_abstract_rep<T,M> {
public:
eye_rep (const solver_option_type& opt = solver_option_type());
void update_values (const csr<T,M>&) {}
vec<T,M> operator* (const vec<T,M>& x) const { return x; }
vec<T,M> solve (const vec<T,M>& x) const { return x; }
vec<T,M> trans_solve (const vec<T,M>& x) const { return x; }
};
//>eye:
template<class T, class M>
inline
eye_rep<T,M>::eye_rep (const solver_option_type& opt)
: solver_abstract_rep<T,M>(opt)
{
}
}// namespace rheolef
# endif // _RHEOLEF_EYE_H
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