/usr/include/polymake/internal/linalg_exceptions.h is in libpolymake-dev-common 3.2r2-3.
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 | /* Copyright (c) 1997-2018
Ewgenij Gawrilow, Michael Joswig (Technische Universitaet Berlin, Germany)
http://www.polymake.org
This program 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, or (at your option) any
later version: http://www.gnu.org/licenses/gpl.txt.
This program 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.
--------------------------------------------------------------------------------
*/
#ifndef POLYMAKE_INTERNAL_LINALG_EXCEPTIONS_H
#define POLYMAKE_INTERNAL_LINALG_EXCEPTIONS_H
#include <stdexcept>
namespace pm {
class linalg_error : public std::runtime_error {
public:
linalg_error(const std::string& what) : std::runtime_error(what) {}
};
class degenerate_matrix : public linalg_error {
public:
degenerate_matrix() : linalg_error("matrix not invertible") {}
degenerate_matrix(const std::string& what) : linalg_error(what) {}
};
class infeasible : public linalg_error {
public:
infeasible() : linalg_error("infeasible system of linear equations or inequalities") {}
infeasible(const std::string& what) : linalg_error(what) {}
};
class underdetermined : public linalg_error {
public:
underdetermined() : linalg_error("underdetermined system of linear equations") {}
underdetermined(const std::string& what) : linalg_error(what) {}
};
} // end namespace pm
namespace polymake {
using pm::linalg_error;
using pm::degenerate_matrix;
using pm::infeasible;
using pm::underdetermined;
}
#endif // POLYMAKE_INTERNAL_LINALG_EXCEPTIONS_H
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