X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fconstant.cpp;h=13acc363f54db0f0dd3f3908ae6ab5e1d987a86b;hp=e86a2964164256382b9380754669124f65315b1c;hb=cb078dba2a491d80a34924b29bd8d3992c18b7fe;hpb=f7a07ae7330a3543bb00aa7b659e2624d6c440c7 diff --git a/ginac/constant.cpp b/ginac/constant.cpp index e86a2964..13acc363 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) 1999-2001 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 @@ -17,96 +17,72 @@ * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include +#include #include "constant.h" #include "numeric.h" #include "ex.h" -#include "print.h" #include "archive.h" -#include "debugmsg.h" #include "utils.h" +#include "inifcns.h" 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 ctor, dtor, copy ctor assignment operator and helpers +// default constructor ////////// // public -constant::constant() : basic(TINFO_constant), ef(0), number(0), serial(next_serial++) +constant::constant() : basic(&constant::tinfo_static), ef(0), serial(next_serial++), domain(domain::complex) { - debugmsg("constant default ctor",LOGLEVEL_CONSTRUCT); -} - -// protected - -/** For use by copy ctor and assignment operator. */ -void constant::copy(const constant & other) -{ - inherited::copy(other); - name = other.name; - TeX_name = other.TeX_name; - serial = other.serial; - ef = other.ef; - if (other.number != 0) - number = new numeric(*other.number); - else - number = 0; -} - -void constant::destroy(bool call_parent) -{ - delete number; - if (call_parent) - inherited::destroy(call_parent); + setflag(status_flags::evaluated | status_flags::expanded); } ////////// -// other ctors +// other constructors ////////// // public -constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname) - : basic(TINFO_constant), name(initname), ef(efun), number(0), serial(next_serial++) +constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname, unsigned dm) + : basic(&constant::tinfo_static), name(initname), ef(efun), serial(next_serial++), domain(dm) { - debugmsg("constant ctor from string, function",LOGLEVEL_CONSTRUCT); if (texname.empty()) TeX_name = "\\mbox{" + name + "}"; else TeX_name = texname; - setflag(status_flags::evaluated); + setflag(status_flags::evaluated | status_flags::expanded); } -constant::constant(const std::string & initname, const numeric & initnumber, const std::string & texname) - : basic(TINFO_constant), name(initname), ef(0), number(new numeric(initnumber)), serial(next_serial++) +constant::constant(const std::string & initname, const numeric & initnumber, const std::string & texname, unsigned dm) + : basic(&constant::tinfo_static), name(initname), ef(0), number(initnumber), serial(next_serial++), domain(dm) { - debugmsg("constant ctor from string, numeric",LOGLEVEL_CONSTRUCT); if (texname.empty()) TeX_name = "\\mbox{" + name + "}"; else TeX_name = texname; - setflag(status_flags::evaluated); + setflag(status_flags::evaluated | status_flags::expanded); } ////////// // archiving ////////// -constant::constant(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst) -{ - debugmsg("constant ctor from archive_node", LOGLEVEL_CONSTRUCT); -} +constant::constant(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst) {} -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) @@ -131,88 +107,119 @@ void constant::archive(archive_node &n) const } ////////// -// functions overriding virtual functions from bases classes +// functions overriding virtual functions from base classes ////////// // public -void constant::print(const print_context & c, unsigned level) const +void constant::do_print(const print_context & c, unsigned level) const { - debugmsg("constant print", LOGLEVEL_PRINT); + c.s << name; +} - if (is_of_type(c, print_tree)) { - c.s << std::string(level, ' ') << name << " (" << class_name() << ")" - << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec - << std::endl; - } else if (is_of_type(c, print_latex)) - c.s << TeX_name; - else - c.s << name; +void constant::do_print_tree(const print_tree & c, unsigned level) const +{ + c.s << std::string(level, ' ') << name << " (" << class_name() << ")" << " @" << this + << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec + << std::endl; } -int constant::degree(const ex & s) const +void constant::do_print_latex(const print_latex & c, unsigned level) const { - return is_equal(*s.bp) ? 1 : 0; + c.s << TeX_name; } -int constant::ldegree(const ex & s) const +void constant::do_print_python_repr(const print_python_repr & c, unsigned level) const { - return is_equal(*s.bp) ? 1 : 0; + c.s << class_name() << "('" << name << "'"; + if (TeX_name != "\\mbox{" + name + "}") + c.s << ",TeX_name='" << TeX_name << "'"; + c.s << ')'; } -ex constant::coeff(const ex & s, int n) const +bool constant::info(unsigned inf) const { - if (is_equal(*s.bp)) - return n==1 ? _ex1() : _ex0(); + if (inf == info_flags::polynomial) + return true; + if (inf == info_flags::real) + return domain==domain::real || domain==domain::positive ; + if (inf==info_flags::positive || inf==info_flags::nonnegative) + return domain == domain::positive; else - return n==0 ? *this : _ex0(); + return inherited::info(inf); } ex constant::evalf(int level) const { if (ef!=0) { return ef(); - } else if (number != 0) { - return number->evalf(); + } else { + return number.evalf(); } return *this; } +bool constant::is_polynomial(const ex & var) const +{ + return true; +} + +ex constant::conjugate() const +{ + if ( domain==domain::real || domain==domain::positive ) + return *this; + return conjugate_function(*this).hold(); +} + +ex constant::real_part() const +{ + if ( domain==domain::real || domain==domain::positive ) + return *this; + return real_part_function(*this).hold(); +} + +ex constant::imag_part() const +{ + if ( domain==domain::real || domain==domain::positive ) + return 0; + return imag_part_function(*this).hold(); +} + // protected -/** Implementation of ex::diff() for a constant. It always returns 0. +/** Implementation of ex::diff() for a constant always returns 0. * * @see ex::diff */ ex constant::derivative(const symbol & s) const { - return _ex0(); + 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(void) const +unsigned constant::calchash() const { - hashvalue = golden_ratio_hash(tinfo() ^ serial); - // mask out numeric hashes: - hashvalue &= 0x7FFFFFFFU; - + hashvalue = golden_ratio_hash((p_int)tinfo() ^ serial); + setflag(status_flags::hash_calculated); - + return hashvalue; } @@ -239,13 +246,13 @@ unsigned constant::next_serial = 0; ////////// /** Pi. (3.14159...) Diverts straight into CLN for evalf(). */ -const constant Pi("Pi", PiEvalf, "\\pi"); +const constant Pi("Pi", PiEvalf, "\\pi", domain::positive); /** Euler's constant. (0.57721...) Sometimes called Euler-Mascheroni constant. * Diverts straight into CLN for evalf(). */ -const constant Euler("Euler", EulerEvalf, "\\gamma_E"); +const constant Euler("Euler", EulerEvalf, "\\gamma_E", domain::positive); /** Catalan's constant. (0.91597...) Diverts straight into CLN for evalf(). */ -const constant Catalan("Catalan", CatalanEvalf, "G"); +const constant Catalan("Catalan", CatalanEvalf, "G", domain::positive); } // namespace GiNaC