* Implementation of GiNaC's constant types and some special constants. */
/*
- * GiNaC Copyright (C) 1999-2003 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
*
* 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 <string>
#include "constant.h"
#include "numeric.h"
#include "ex.h"
-#include "print.h"
#include "archive.h"
#include "utils.h"
+#include "inifcns.h"
namespace GiNaC {
-GINAC_IMPLEMENT_REGISTERED_CLASS(constant, basic)
+GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(constant, basic,
+ print_func<print_context>(&constant::do_print).
+ print_func<print_latex>(&constant::do_print_latex).
+ print_func<print_tree>(&constant::do_print_tree).
+ print_func<print_python_repr>(&constant::do_print_python_repr))
//////////
// default constructor
// public
-constant::constant() : basic(TINFO_constant), ef(0), serial(next_serial++)
+constant::constant() : basic(&constant::tinfo_static), ef(0), serial(next_serial++), domain(domain::complex)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
// public
-constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname)
- : basic(TINFO_constant), name(initname), ef(efun), 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)
{
if (texname.empty())
TeX_name = "\\mbox{" + name + "}";
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(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)
{
if (texname.empty())
TeX_name = "\\mbox{" + name + "}";
// public
-void constant::print(const print_context & c, unsigned level) const
-{
- if (is_a<print_tree>(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<print_latex>(c)) {
- c.s << TeX_name;
- } else if (is_a<print_python_repr>(c)) {
- c.s << class_name() << "('" << name << "'";
- if (TeX_name != "\\mbox{" + name + "}")
- c.s << ",TeX_name='" << TeX_name << "'";
- c.s << ')';
- } else
- c.s << name;
+void constant::do_print(const print_context & c, unsigned level) const
+{
+ 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;
+}
+
+void constant::do_print_latex(const print_latex & c, unsigned level) const
+{
+ c.s << TeX_name;
+}
+
+void constant::do_print_python_repr(const print_python_repr & c, unsigned level) const
+{
+ c.s << class_name() << "('" << name << "'";
+ if (TeX_name != "\\mbox{" + name + "}")
+ c.s << ",TeX_name='" << TeX_name << "'";
+ c.s << ')';
+}
+
+bool constant::info(unsigned inf) const
+{
+ 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 inherited::info(inf);
}
ex constant::evalf(int level) const
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.
unsigned constant::calchash() const
{
- hashvalue = golden_ratio_hash(tinfo() ^ serial);
+ hashvalue = golden_ratio_hash((p_int)tinfo() ^ serial);
setflag(status_flags::hash_calculated);
//////////
/** 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
git://www.ginac.de / ginac.git / blobdiff