/usr/include/pynac/mul.h is in libpynac-dev 0.7.12-2build1.
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 | /** @file mul.h
 *
 *  Interface to GiNaC's products of expressions. */
/*
 *  GiNaC Copyright (C) 1999-2008 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_MUL_H__
#define __GINAC_MUL_H__
#include "expairseq.h"
#include "power.h"
namespace GiNaC {
/** Product of expressions. */
class mul : public expairseq
{
	GINAC_DECLARE_REGISTERED_CLASS(mul, expairseq)
	
	friend class print_order;
	friend class ex;
	friend class add;
	friend class power;
	
	// other constructors
public:
	mul(const ex & lh, const ex & rh);
	mul(const exvector & v, bool hold=false);
	mul(const epvector & v);
	mul(const epvector & v, const numeric & oc,
                        bool do_index_renaming = false);
//	mul(std::unique_ptr<epvector> vp, const ex & oc, bool do_index_renaming = false);
	mul(const ex & lh, const ex & mh, const ex & rh);
	
	// functions overriding virtual functions from base classes
public:
	unsigned precedence() const override {return 50;}
	bool info(unsigned inf) const override;
	bool is_polynomial(const ex & var) const override;
	numeric degree(const ex & s) const override;
	numeric ldegree(const ex & s) const override;
	ex coeff(const ex & s, const ex & n) const override;
	bool has(const ex & other, unsigned options = 0) const override;
	ex eval(int level=0) const override;
	ex evalf(int level=0, PyObject* parent=nullptr) const override;
	ex real_part() const override;
	ex imag_part() const override;
	ex series(const relational & s, int order, unsigned options = 0) const override;
        void useries(flint_series_t& fp, int order) const override;
	ex normal(exmap & repl, exmap & rev_lookup, int level = 0, unsigned options = 0) const override;
	numeric integer_content() const override;
	ex smod(const numeric &xi) const override;
	numeric max_coefficient() const override;
	ex conjugate() const override;
protected:
	ex derivative(const symbol & s) const override;
	unsigned return_type() const override;
	tinfo_t return_type_tinfo() const override;
	ex thisexpairseq(const epvector & v, const numeric & oc, bool do_index_renaming = false) const override;
	ex thisexpairseq(std::unique_ptr<epvector> vp, const numeric & oc, bool do_index_renaming = false) const override;
	expair split_ex_to_pair(const ex & e) const override;
	expair combine_ex_with_coeff_to_pair(const ex & e,
                        const numeric & c) const override;
	expair combine_pair_with_coeff_to_pair(const expair & p,
                        const numeric & c) const override;
	bool expair_needs_further_processing(epp it) override;
	numeric default_overall_coeff() const override;
	void combine_overall_coeff(const numeric & c) override;
	void combine_overall_coeff(const numeric & c1, const numeric & c2) override;
	bool can_make_flat(const expair & p) const override;
	ex expand(unsigned options=0) const override;
	void find_real_imag(ex&, ex&) const;
	//int compare(const basic& other) const;
	
	ex eval_infinity(epvector::const_iterator infinity_iter) const;
	ex eval_exponentials() const;
	// new virtual functions which can be overridden by derived classes
	// none
	
	// non-virtual functions in this class
public:
	ex algebraic_subs_mul(const exmap & m, unsigned options) const;
	double total_degree() const;
	const epvector & get_sorted_seq() const override;
	ex recombine_pair_to_ex(const expair & p) const override;
	//int compare_symbol(const symbol &other) const;
	//int compare_pow(const power &other) const;
        ex without_known_factor(const ex& f) const;
protected:
	void print_overall_coeff(const ex coeff_ex, const print_context & c,
			const char *mul_sym, bool latex=false) const;
	void print_exvector(const exvector & v, const print_context & c,
		const char* sep) const;
	void do_print(const print_context & c, unsigned level) const override;
	void do_print_latex(const print_latex & c, unsigned level) const;
	void do_print_rat_func(const print_context & c, unsigned level, 
			bool latex_tags) const;
	void do_print_csrc(const print_csrc & c, unsigned level) const;
	void do_print_python_repr(const print_python_repr & c, unsigned level) const override;
	static bool can_be_further_expanded(const ex & e);
	std::unique_ptr<epvector> expandchildren(unsigned options) const;
	mutable double tdegree;
};
} // namespace GiNaC
#endif // ndef __GINAC_MUL_H__
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