/usr/include/swiginac/idx.i is in python-swiginac 1.5.1.1-1+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(c) Copyright 2003, 2004, 2005
Author: Ola Skavhaug and Ondrej Certik
This file is part of swiginac.
swiginac 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.
swiginac 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 swiginac; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
class idx : public basic
{
public:
explicit idx(const ex & v, const ex & dim);
virtual bool is_dummy_pair_same_type(const basic & other) const;
ex get_value() const {return value;}
bool is_numeric() const {return is_exactly_a<numeric>(value);}
bool is_symbolic() const {return !is_exactly_a<numeric>(value);}
ex get_dim() const {return dim;}
bool is_dim_numeric() const {return is_exactly_a<numeric>(dim);}
bool is_dim_symbolic() const {return !is_exactly_a<numeric>(dim);}
ex replace_dim(const ex & new_dim) const;
ex minimal_dim(const idx & other) const;
};
class varidx : public idx
{
public:
varidx(const ex & v, const ex & dim, bool covariant = false);
bool is_dummy_pair_same_type(const basic & other) const;
bool is_covariant() const {return covariant;}
bool is_contravariant() const {return !covariant;}
ex toggle_variance() const;
};
class spinidx : public varidx
{
public:
spinidx(const ex & v, const ex & dim = 2, bool covariant = false, bool dotted = false);
bool is_dummy_pair_same_type(const basic & other) const;
bool is_dotted() const {return dotted;}
bool is_undotted() const {return !dotted;}
ex toggle_dot() const;
ex toggle_variance_dot() const;
};
bool is_dummy_pair(const idx & i1, const idx & i2);
bool is_dummy_pair(const ex & e1, const ex & e2);
void find_free_and_dummy(exvector::const_iterator it, exvector::const_iterator itend, exvector & out_free, exvector & out_dummy);
void find_free_and_dummy(const exvector & v, exvector & out_free, exvector & out_dummy);
void find_dummy_indices(const exvector & v, exvector & out_dummy);
size_t count_dummy_indices(const exvector & v);
size_t count_free_indices(const exvector & v);
ex minimal_dim(const ex & dim1, const ex & dim2);
// vim:ft=cpp:
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