/usr/include/pynac/infinity.h is in libpynac-dev 0.3.2+dfsg-1.
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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | /** @file infinity.h
*
* The value "Infinity". */
/*
* Copyright (C) 2011 Volker Braun <vbraun@stp.dias.ie>
*
* 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 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __GINAC_INFINITY_H__
#define __GINAC_INFINITY_H__
#include "basic.h"
#include "numeric.h"
#include "ex.h"
#include <string>
namespace GiNaC {
/** This class holds "infinity"
* It includes a direction (like -infinity).
**/
class infinity : public basic
{
GINAC_DECLARE_REGISTERED_CLASS(infinity, basic)
public:
infinity(const numeric & _direction);
static infinity from_direction(const ex & _direction);
static infinity from_sign(int sgn);
// functions overriding virtual functions from base classes
public:
bool info(unsigned inf) const;
ex evalf(int level = 0, PyObject* parent=NULL) const;
ex conjugate() const;
ex real_part() const;
ex imag_part() const;
bool is_unsigned_infinity() const;
bool is_plus_infinity() const;
bool is_minus_infinity() const;
const ex & get_direction() const { return direction; };
const infinity & operator *= (const ex & rhs);
const infinity & operator += (const ex & rhs);
protected:
ex derivative(const symbol & s) const;
bool is_equal_same_type(const basic & other) const;
unsigned calchash() const;
// non-virtual functions in this class
protected:
void do_print(const print_context & c, unsigned level) const;
void do_print_tree(const print_tree & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
void do_print_python_repr(const print_python_repr & c, unsigned level) const;
void set_direction(const ex & new_direction);
// member variables
private:
ex direction;
};
extern const infinity Infinity;
extern const infinity NegInfinity;
extern const infinity UnsignedInfinity;
} // namespace GiNaC
#endif // ndef __GINAC_INFINITY_H__
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