X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fconstant.cpp;h=00f0163d3b505b81c89f7fe33e3de5155fb340bd;hp=d6c07409a32d1ed581b6c0cbed444c6161ba9c9b;hb=9b5d06b34d3ee5f0ccd3c500be38fcdf61222956;hpb=cfea748404dec5fb2f2e3310d36eeb6640f13824 diff --git a/ginac/constant.cpp b/ginac/constant.cpp index d6c07409..00f0163d 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) 1999-2009 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 @@ -17,75 +17,60 @@ * * 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 "constant.h" #include "numeric.h" #include "ex.h" -#include "print.h" #include "archive.h" #include "utils.h" +#include "inifcns.h" + +#include +#include +#include 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++) {} - -// protected - -/** For use by copy ctor and assignment operator. */ -void constant::copy(const constant & other) +constant::constant() : ef(0), serial(next_serial++), domain(domain::complex) { - 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) + : name(initname), ef(efun), serial(next_serial++), domain(dm) { if (texname.empty()) - TeX_name = "\\mbox{" + name + "}"; + TeX_name = "\\mathrm{" + name + "}"; else TeX_name = texname; 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) + : name(initname), ef(0), number(initnumber), serial(next_serial++), domain(dm) { if (texname.empty()) - TeX_name = "\\mbox{" + name + "}"; + TeX_name = "\\mathrm{" + name + "}"; else TeX_name = texname; setflag(status_flags::evaluated | status_flags::expanded); @@ -95,25 +80,24 @@ constant::constant(const std::string & initname, const numeric & initnumber, con // archiving ////////// -constant::constant(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst) {} - -ex constant::unarchive(const archive_node &n, const lst &sym_lst) +void constant::read_archive(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) std::string s; if (n.find_string("name", s)) { if (s == Pi.name) - return Pi; + *this = Pi; else if (s == Catalan.name) - return Catalan; + *this = Catalan; else if (s == Euler.name) - return Euler; + *this = Euler; else throw (std::runtime_error("unknown constant '" + s + "' in archive")); } else throw (std::runtime_error("unnamed constant in archive")); } +GINAC_BIND_UNARCHIVER(constant); void constant::archive(archive_node &n) const { @@ -127,46 +111,79 @@ void constant::archive(archive_node &n) const // public -void constant::print(const print_context & c, unsigned level) const +void constant::do_print(const print_context & c, unsigned level) const { - if (is_a(c)) { - c.s << std::string(level, ' ') << name << " (" << class_name() << ")" - << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec - << std::endl; - } else if (is_a(c)) - c.s << TeX_name; - else - c.s << name; + 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(ex_to(s)) ? 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(ex_to(s)) ? 1 : 0; + c.s << class_name() << "('" << name << "'"; + if (TeX_name != "\\mathrm{" + 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(ex_to(s))) - 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 always returns 0. @@ -196,14 +213,13 @@ bool constant::is_equal_same_type(const basic & other) const 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; - + const void* typeid_this = (const void*)typeid(*this).name(); + hashvalue = golden_ratio_hash((p_int)typeid_this ^ serial); + setflag(status_flags::hash_calculated); - + return hashvalue; } @@ -230,13 +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