* Added realsymbol class.

[ginac.git] / ginac / symbol.cpp

diff --git a/ginac/symbol.cpp b/ginac/symbol.cpp
index 31fc1d66117f7455a6d08127c621c9f69d9d4f94..76d063eb952455259ebe42629c8333da149bb875 100644 (file)
--- a/ginac/symbol.cpp
+++ b/ginac/symbol.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's symbolic objects. */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2004 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
@@ -28,6 +28,7 @@
 #include "archive.h"
 #include "tostring.h"
 #include "utils.h"
+#include "inifcns.h"
 
 namespace GiNaC {
 
@@ -41,30 +42,67 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(symbol, basic,
 // default constructor
 //////////
 
+// symbol
+
 symbol::symbol()
- : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(autoname_prefix() + ToString(serial)), TeX_name(name)
+ : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(autoname_prefix() + ToString(serial)), TeX_name(name), ret_type(return_types::commutative), ret_type_tinfo(TINFO_symbol), domain(domain::complex)
 {
        setflag(status_flags::evaluated | status_flags::expanded);
 }
 
+// realsymbol
+
+realsymbol::realsymbol()
+{
+       domain = domain::real;
+}
+
 //////////
 // other constructors
 //////////
 
 // public
 
-symbol::symbol(const std::string & initname)
- : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name())
+// symbol
+
+symbol::symbol(const std::string & initname, unsigned domain)
+ : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), ret_type(return_types::commutative), ret_type_tinfo(TINFO_symbol), domain(domain)
+{
+       setflag(status_flags::evaluated | status_flags::expanded);
+}
+
+symbol::symbol(const std::string & initname, const std::string & texname, unsigned domain)
+ : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), ret_type(return_types::commutative), ret_type_tinfo(TINFO_symbol), domain(domain)
+{
+       setflag(status_flags::evaluated | status_flags::expanded);
+}
+
+symbol::symbol(const std::string & initname, unsigned rt, unsigned rtt, unsigned domain)
+ : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(default_TeX_name()), ret_type(rt), ret_type_tinfo(rtt), domain(domain)
 {
        setflag(status_flags::evaluated | status_flags::expanded);
 }
 
-symbol::symbol(const std::string & initname, const std::string & texname)
- : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname)
+symbol::symbol(const std::string & initname, const std::string & texname, unsigned rt, unsigned rtt, unsigned domain)
+ : inherited(TINFO_symbol), asexinfop(new assigned_ex_info), serial(next_serial++), name(initname), TeX_name(texname), ret_type(rt), ret_type_tinfo(rtt), domain(domain)
 {
        setflag(status_flags::evaluated | status_flags::expanded);
 }
 
+// realsymbol
+       
+realsymbol::realsymbol(const std::string & initname, unsigned domain)
+ : symbol(initname, domain) { }
+
+realsymbol::realsymbol(const std::string & initname, const std::string & texname, unsigned domain)
+ : symbol(initname, texname, domain) { }
+
+realsymbol::realsymbol(const std::string & initname, unsigned rt, unsigned rtt, unsigned domain)
+ : symbol(initname, rt, rtt, domain) { }
+
+realsymbol::realsymbol(const std::string & initname, const std::string & texname, unsigned rt, unsigned rtt, unsigned domain)
+ : symbol(initname, texname, rt, rtt, domain) { }
+
 //////////
 // archiving
 //////////
@@ -73,11 +111,17 @@ symbol::symbol(const std::string & initname, const std::string & texname)
 symbol::symbol(const archive_node &n, lst &sym_lst)
  : inherited(n, sym_lst), asexinfop(new assigned_ex_info), serial(next_serial++)
 {
-       if (!(n.find_string("name", name)))
+       if (!n.find_string("name", name))
                name = autoname_prefix() + ToString(serial);
-       if (!(n.find_string("TeXname", TeX_name)))
+       if (!n.find_string("TeXname", TeX_name))
                TeX_name = default_TeX_name();
-       setflag(status_flags::evaluated);
+       if (!n.find_unsigned("domain", domain))
+               domain = domain::complex;
+       if (!n.find_unsigned("return_type", ret_type))
+               ret_type = return_types::commutative;
+       if (!n.find_unsigned("return_type_tinfo", ret_type_tinfo))
+               ret_type_tinfo = TINFO_symbol;
+       setflag(status_flags::evaluated | status_flags::expanded);
 }
 
 /** Unarchive the object. */
@@ -103,6 +147,12 @@ void symbol::archive(archive_node &n) const
        n.add_string("name", name);
        if (TeX_name != default_TeX_name())
                n.add_string("TeX_name", TeX_name);
+       if (domain != domain::complex)
+               n.add_unsigned("domain", domain);
+       if (ret_type != return_types::commutative)
+               n.add_unsigned("return_type", ret_type);
+       if (ret_type_tinfo != TINFO_symbol)
+               n.add_unsigned("return_type_tinfo", ret_type_tinfo);
 }
 
 //////////
@@ -123,9 +173,10 @@ void symbol::do_print_latex(const print_latex & c, unsigned level) const
 
 void symbol::do_print_tree(const print_tree & c, unsigned level) const
 {
-       c.s << std::string(level, ' ') << name << " (" << class_name() << ")"
+       c.s << std::string(level, ' ') << name << " (" << class_name() << ")" << " @" << this
            << ", serial=" << serial
            << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+           << ", domain=" << domain
            << std::endl;
 }
 
@@ -139,14 +190,17 @@ void symbol::do_print_python_repr(const print_python_repr & c, unsigned level) c
 
 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)
+       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);
 }
@@ -167,6 +221,15 @@ ex symbol::eval(int level) const
        }
 }
 
+ex symbol::conjugate() const
+{
+       if (this->domain == domain::complex) {
+               return GiNaC::conjugate(*this).hold();
+       } else {
+               return *this;
+       }
+}
+
 // protected
 
 /** Implementation of ex::diff() for single differentiation of a symbol.
@@ -276,7 +339,7 @@ unsigned symbol::next_serial = 0;
 //////////
 
 /** Default ctor.  Defaults to unassigned. */
-symbol::assigned_ex_info::assigned_ex_info() : is_assigned(false)
+symbol::assigned_ex_info::assigned_ex_info() throw() : is_assigned(false)
 {
 }