* Implementation of GiNaC's symbolic objects. */
/*
- * GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ * 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
// symbol
symbol::symbol()
- : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(autoname_prefix() + ToString(serial)), TeX_name(name), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static), domain(domain::complex)
+ : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(autoname_prefix() + ToString(serial)), TeX_name(name), domain(domain::complex), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
domain = domain::real;
}
+// possymbol
+
+possymbol::possymbol()
+{
+ domain = domain::positive;
+}
+
//////////
// other constructors
//////////
// symbol
symbol::symbol(const std::string & initname, unsigned domain)
- : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static), domain(domain)
+ : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), domain(domain), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
symbol::symbol(const std::string & initname, unsigned rt, tinfo_t rtt, unsigned domain)
- : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), ret_type(rt), ret_type_tinfo(rtt), domain(domain)
+ : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), domain(domain), ret_type(rt), ret_type_tinfo(rtt)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
symbol::symbol(const std::string & initname, const std::string & texname, unsigned domain)
- : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static), domain(domain)
+ : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), domain(domain), ret_type(return_types::commutative), ret_type_tinfo(&symbol::tinfo_static)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
symbol::symbol(const std::string & initname, const std::string & texname, unsigned rt, tinfo_t rtt, unsigned domain)
- : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), ret_type(rt), ret_type_tinfo(rtt), domain(domain)
+ : inherited(&symbol::tinfo_static), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), domain(domain), ret_type(rt), ret_type_tinfo(rtt)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
realsymbol::realsymbol(const std::string & initname, const std::string & texname, unsigned rt, tinfo_t rtt, unsigned domain)
: symbol(initname, texname, rt, rtt, domain) { }
+// possymbol
+
+possymbol::possymbol(const std::string & initname, unsigned domain)
+ : symbol(initname, domain) { }
+
+possymbol::possymbol(const std::string & initname, const std::string & texname, unsigned domain)
+ : symbol(initname, texname, domain) { }
+
+possymbol::possymbol(const std::string & initname, unsigned rt, tinfo_t rtt, unsigned domain)
+ : symbol(initname, rt, rtt, domain) { }
+
+possymbol::possymbol(const std::string & initname, const std::string & texname, unsigned rt, tinfo_t rtt, unsigned domain)
+ : symbol(initname, texname, rt, rtt, domain) { }
+
//////////
// archiving
//////////
bool symbol::info(unsigned inf) const
{
- if (inf == info_flags::symbol)
- return true;
- if (inf == info_flags::polynomial ||
- inf == info_flags::integer_polynomial ||
- inf == info_flags::cinteger_polynomial ||
- inf == info_flags::rational_polynomial ||
- inf == info_flags::crational_polynomial ||
- inf == info_flags::rational_function)
- return true;
- if (inf == info_flags::real)
- return domain == domain::real;
- else
- return inherited::info(inf);
+ switch (inf) {
+ case info_flags::symbol:
+ case info_flags::polynomial:
+ case info_flags::integer_polynomial:
+ case info_flags::cinteger_polynomial:
+ case info_flags::rational_polynomial:
+ case info_flags::crational_polynomial:
+ case info_flags::rational_function:
+ case info_flags::expanded:
+ return true;
+ case info_flags::real:
+ return domain == domain::real || domain == domain::positive;
+ case info_flags::positive:
+ case info_flags::nonnegative:
+ return domain == domain::positive;
+ case info_flags::has_indices:
+ return false;
+ }
+ return inherited::info(inf);
}
ex symbol::eval(int level) const
ex symbol::conjugate() const
{
if (this->domain == domain::complex) {
- return GiNaC::conjugate_function(*this).hold();
+ return conjugate_function(*this).hold();
} else {
return *this;
}
}
+ex symbol::real_part() const
+{
+ if (domain==domain::real || domain==domain::positive)
+ return *this;
+ return real_part_function(*this).hold();
+}
+
+ex symbol::imag_part() const
+{
+ if (domain==domain::real || domain==domain::positive)
+ return 0;
+ return imag_part_function(*this).hold();
+}
+
bool symbol::is_polynomial(const ex & var) const
{
return true;