/usr/include/ginac/symbol.h is in libginac-dev 1.7.2-2.
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 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /** @file symbol.h
*
* Interface to GiNaC's symbolic objects. */
/*
* GiNaC Copyright (C) 1999-2017 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_SYMBOL_H
#define GINAC_SYMBOL_H
#include "basic.h"
#include "ex.h"
#include "ptr.h"
#include "archive.h"
#include <string>
#include <typeinfo>
namespace GiNaC {
/** Basic CAS symbol. It has a name because it must know how to output itself.
*/
class symbol : public basic
{
GINAC_DECLARE_REGISTERED_CLASS(symbol, basic)
// other constructors
public:
explicit symbol(const std::string & initname);
symbol(const std::string & initname, const std::string & texname);
// functions overriding virtual functions from base classes
public:
bool info(unsigned inf) const override;
ex eval() const override { return *this; } // for performance reasons
ex evalf() const override { return *this; } // overwrites basic::evalf() for performance reasons
ex series(const relational & s, int order, unsigned options = 0) const override;
ex subs(const exmap & m, unsigned options = 0) const override { return subs_one_level(m, options); } // overwrites basic::subs() for performance reasons
ex normal(exmap & repl, exmap & rev_lookup) const override;
ex to_rational(exmap & repl) const override;
ex to_polynomial(exmap & repl) const override;
ex conjugate() const override;
ex real_part() const override;
ex imag_part() const override;
bool is_polynomial(const ex & var) const override;
/** Save (a.k.a. serialize) object into archive. */
void archive(archive_node& n) const override;
/** Read (a.k.a. deserialize) object from archive. */
void read_archive(const archive_node& n, lst& syms) override;
protected:
ex derivative(const symbol & s) const override;
bool is_equal_same_type(const basic & other) const override;
unsigned calchash() const override;
// new virtual functions which can be overridden by derived classes
public:
virtual unsigned get_domain() const { return domain::complex; }
// non-virtual functions in this class
public:
void set_name(const std::string & n) { name = n; }
void set_TeX_name(const std::string & n) { TeX_name = n; }
std::string get_name() const;
protected:
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
void do_print_tree(const print_tree & c, unsigned level) const;
void do_print_python_repr(const print_python_repr & c, unsigned level) const;
// member variables
protected:
unsigned serial; ///< unique serial number for comparison
mutable std::string name; ///< printname of this symbol
std::string TeX_name; ///< LaTeX name of this symbol
private:
static unsigned next_serial;
};
GINAC_DECLARE_UNARCHIVER(symbol);
/** Specialization of symbol to real domain */
class realsymbol : public symbol
{
public:
realsymbol();
explicit realsymbol(const std::string & initname);
realsymbol(const std::string & initname, const std::string & texname);
unsigned get_domain() const override { return domain::real; }
ex conjugate() const override { return *this; }
ex real_part() const override { return *this; }
ex imag_part() const override { return 0; }
realsymbol* duplicate() const override
{
realsymbol * bp = new realsymbol(*this);
bp->setflag(status_flags::dynallocated);
return bp;
}
};
GINAC_DECLARE_UNARCHIVER(realsymbol);
/** Specialization of symbol to real positive domain */
class possymbol : public realsymbol
{
public:
possymbol();
explicit possymbol(const std::string & initname);
possymbol(const std::string & initname, const std::string & texname);
unsigned get_domain() const override { return domain::positive; }
possymbol* duplicate() const override
{
possymbol * bp = new possymbol(*this);
bp->setflag(status_flags::dynallocated);
return bp;
}
};
GINAC_DECLARE_UNARCHIVER(possymbol);
} // namespace GiNaC
#endif // ndef GINAC_SYMBOL_H
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