X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fconstant.cpp;h=e0ccf54428902d3e3d72b7e531bb28b8e538ab59;hp=cbf9030883cabc8b4a427ad56f46ea8ab8932006;hb=def23d34c68a383ce3d7da0227b984c8291a3bf9;hpb=956eeb82c513a723e864edefa857133282cf692b diff --git a/ginac/constant.cpp b/ginac/constant.cpp index cbf90308..e0ccf544 100644 --- a/ginac/constant.cpp +++ b/ginac/constant.cpp @@ -3,7 +3,7 @@ * Implementation of GiNaC's constant types and some special constants. */ /* - * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2003 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 @@ -22,65 +22,31 @@ #include #include +#include #include "constant.h" #include "numeric.h" #include "ex.h" #include "archive.h" -#include "debugmsg.h" +#include "utils.h" -#ifndef NO_NAMESPACE_GINAC namespace GiNaC { -#endif // ndef NO_NAMESPACE_GINAC -GINAC_IMPLEMENT_REGISTERED_CLASS(constant, basic) +GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(constant, basic, + print_func(&constant::do_print). + print_func(&constant::do_print_latex). + print_func(&constant::do_print_tree). + print_func(&constant::do_print_python_repr)) ////////// -// default constructor, destructor, copy constructor assignment operator and helpers +// default constructor ////////// // public -constant::constant() : - basic(TINFO_constant), name(""), ef(0), - number(0), serial(next_serial++) +constant::constant() : basic(TINFO_constant), ef(0), serial(next_serial++) { - debugmsg("constant default constructor",LOGLEVEL_CONSTRUCT); -} - -constant::~constant() -{ - debugmsg("constant destructor",LOGLEVEL_DESTRUCT); - destroy(0); -} - -constant::constant(const constant & other) -{ - debugmsg("constant copy constructor",LOGLEVEL_CONSTRUCT); - copy(other); -} - -// protected - -void constant::copy(const constant & other) -{ - basic::copy(other); - name=other.name; - serial=other.serial; - ef=other.ef; - if (other.number != 0) { - number = new numeric(*other.number); - } else { - number = 0; - } - // fct_assigned=other.fct_assigned; -} - -void constant::destroy(bool call_parent) -{ - delete number; - if (call_parent) - basic::destroy(call_parent); + setflag(status_flags::evaluated | status_flags::expanded); } ////////// @@ -89,123 +55,133 @@ void constant::destroy(bool call_parent) // public -constant::constant(const string & initname, evalffunctype efun) : - basic(TINFO_constant), name(initname), ef(efun), - // number(0), fct_assigned(true), serial(next_serial++) - number(0), serial(next_serial++) +constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname) + : basic(TINFO_constant), name(initname), ef(efun), serial(next_serial++) { - debugmsg("constant constructor from string, function",LOGLEVEL_CONSTRUCT); + if (texname.empty()) + TeX_name = "\\mbox{" + name + "}"; + else + TeX_name = texname; + setflag(status_flags::evaluated | status_flags::expanded); } -constant::constant(const string & initname, const numeric & initnumber) : - basic(TINFO_constant), name(initname), ef(0), - number(new numeric(initnumber)), /* fct_assigned(false),*/ serial(next_serial++) +constant::constant(const std::string & initname, const numeric & initnumber, const std::string & texname) + : basic(TINFO_constant), name(initname), ef(0), number(initnumber), serial(next_serial++) { - debugmsg("constant constructor from string, numeric",LOGLEVEL_CONSTRUCT); + if (texname.empty()) + TeX_name = "\\mbox{" + name + "}"; + else + TeX_name = texname; + setflag(status_flags::evaluated | status_flags::expanded); } ////////// // archiving ////////// -/** Construct object from archive_node. */ -constant::constant(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst) -{ - debugmsg("constant constructor from archive_node", LOGLEVEL_CONSTRUCT); -} +constant::constant(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst) {} -/** Unarchive the object. */ -ex constant::unarchive(const archive_node &n, const lst &sym_lst) +ex constant::unarchive(const archive_node &n, lst &sym_lst) { - // Find constant by name (!! this is bad: 'twould be better if there - // was a list of all global constants that we could search) - string s; - if (n.find_string("name", s)) { - if (s == Pi.name) - return Pi; - else if (s == Catalan.name) - return Catalan; - else if (s == EulerGamma.name) - return EulerGamma; - else - throw (std::runtime_error("unknown constant '" + s + "' in archive")); - } else - throw (std::runtime_error("unnamed constant in archive")); + // Find constant by name (!! this is bad: 'twould be better if there + // was a list of all global constants that we could search) + std::string s; + if (n.find_string("name", s)) { + if (s == Pi.name) + return Pi; + else if (s == Catalan.name) + return Catalan; + else if (s == Euler.name) + return Euler; + else + throw (std::runtime_error("unknown constant '" + s + "' in archive")); + } else + throw (std::runtime_error("unnamed constant in archive")); } -/** Archive the object. */ void constant::archive(archive_node &n) const { - inherited::archive(n); - n.add_string("name", name); + inherited::archive(n); + n.add_string("name", name); } ////////// -// functions overriding virtual functions from bases classes +// functions overriding virtual functions from base classes ////////// // public -basic * constant::duplicate() const +void constant::do_print(const print_context & c, unsigned level) const { - debugmsg("constant duplicate",LOGLEVEL_DUPLICATE); - return new constant(*this); + c.s << name; } -void constant::print(ostream & os, unsigned upper_precedence) const +void constant::do_print_tree(const print_tree & c, unsigned level) const { - debugmsg("constant print",LOGLEVEL_PRINT); - os << name; + c.s << std::string(level, ' ') << name << " (" << class_name() << ")" << " @" << this + << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec + << std::endl; } -void constant::printraw(ostream & os) const +void constant::do_print_latex(const print_latex & c, unsigned level) const { - debugmsg("constant printraw",LOGLEVEL_PRINT); - os << "constant(" << name << ")"; + c.s << TeX_name; } -void constant::printtree(ostream & os, unsigned indent) const +void constant::do_print_python_repr(const print_python_repr & c, unsigned level) const { - debugmsg("constant printtree",LOGLEVEL_PRINT); - os << string(indent,' ') << name - << ", type=" << typeid(*this).name() - << ", hash=" << hashvalue << " (0x" << hex << hashvalue << dec << ")" - << ", flags=" << flags << endl; -} - -void constant::printcsrc(ostream & os, unsigned type, unsigned upper_precedence) const -{ - debugmsg("constant print csrc",LOGLEVEL_PRINT); - os << name; + c.s << class_name() << "('" << name << "'"; + if (TeX_name != "\\mbox{" + name + "}") + c.s << ",TeX_name='" << TeX_name << "'"; + c.s << ')'; } ex constant::evalf(int level) const { - if (ef!=0) { - return ef(); - } else if (number != 0) { - return *number; - } - return *this; + if (ef!=0) { + return ef(); + } else { + return number.evalf(); + } + return *this; } // protected +/** Implementation of ex::diff() for a constant always returns 0. + * + * @see ex::diff */ +ex constant::derivative(const symbol & s) const +{ + return _ex0; +} + int constant::compare_same_type(const basic & other) const { - GINAC_ASSERT(is_exactly_of_type(other, constant)); - // const constant & o=static_cast(const_cast(other)); - // return name.compare(o.name); - const constant *o = static_cast(&other); - if (serial==o->serial) return 0; - return serial < o->serial ? -1 : 1; + GINAC_ASSERT(is_exactly_a(other)); + const constant &o = static_cast(other); + + if (serial == o.serial) + return 0; + else + return serial < o.serial ? -1 : 1; } bool constant::is_equal_same_type(const basic & other) const { - GINAC_ASSERT(is_exactly_of_type(other, constant)); - const constant *o = static_cast(&other); - return serial==o->serial; + GINAC_ASSERT(is_exactly_a(other)); + const constant &o = static_cast(other); + + return serial == o.serial; +} + +unsigned constant::calchash() const +{ + hashvalue = golden_ratio_hash(tinfo() ^ serial); + + setflag(status_flags::hash_calculated); + + return hashvalue; } ////////// @@ -224,23 +200,20 @@ bool constant::is_equal_same_type(const basic & other) const // static member variables ////////// -unsigned constant::next_serial=0; +unsigned constant::next_serial = 0; ////////// // global constants ////////// -const constant some_constant; -const type_info & typeid_constant=typeid(some_constant); - /** Pi. (3.14159...) Diverts straight into CLN for evalf(). */ -const constant Pi("Pi", PiEvalf); -/** Catalan's constant. (0.91597...) Diverts straight into CLN for evalf(). */ -const constant EulerGamma("EulerGamma", EulerGammaEvalf); +const constant Pi("Pi", PiEvalf, "\\pi"); + /** Euler's constant. (0.57721...) Sometimes called Euler-Mascheroni constant. * Diverts straight into CLN for evalf(). */ -const constant Catalan("Catalan", CatalanEvalf); +const constant Euler("Euler", EulerEvalf, "\\gamma_E"); + +/** Catalan's constant. (0.91597...) Diverts straight into CLN for evalf(). */ +const constant Catalan("Catalan", CatalanEvalf, "G"); -#ifndef NO_NAMESPACE_GINAC } // namespace GiNaC -#endif // ndef NO_NAMESPACE_GINAC