/usr/include/ginac/constant.h is in libginac-dev 1.6.2-1.
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 87 88 | /** @file constant.h
*
* Interface to GiNaC's constant types and some special constants. */
/*
* GiNaC Copyright (C) 1999-2011 Johannes Gutenberg University Mainz, Germany
*
* 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_CONSTANT_H
#define GINAC_CONSTANT_H
#include "basic.h"
#include "ex.h"
#include "archive.h"
#include <string>
namespace GiNaC {
typedef ex (*evalffunctype)();
/** This class holds constants, symbols with specific numerical value. Each
* object of this class must either provide their own function to evaluate it
* to class numeric or provide the constant as a numeric (if it's an exact
* number). */
class constant : public basic
{
GINAC_DECLARE_REGISTERED_CLASS(constant, basic)
// other constructors
public:
constant(const std::string & initname, evalffunctype efun = 0, const std::string & texname = std::string(), unsigned domain = domain::complex);
constant(const std::string & initname, const numeric & initnumber, const std::string & texname = std::string(), unsigned domain = domain::complex);
// functions overriding virtual functions from base classes
public:
bool info(unsigned inf) const;
ex evalf(int level = 0) const;
bool is_polynomial(const ex & var) const;
ex conjugate() const;
ex real_part() const;
ex imag_part() const;
void archive(archive_node& n) const;
void read_archive(const archive_node& n, lst& syms);
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;
// member variables
private:
std::string name; ///< printname of this constant
std::string TeX_name; ///< LaTeX name
evalffunctype ef;
ex number; ///< numerical value this constant evalf()s to
unsigned serial; ///< unique serial number for comparison
static unsigned next_serial;
unsigned domain; ///< numerical value this constant evalf()s to
};
GINAC_DECLARE_UNARCHIVER(constant);
extern const constant Pi;
extern const constant Catalan;
extern const constant Euler;
} // namespace GiNaC
#endif // ndef GINAC_CONSTANT_H
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