* Implementation of GiNaC's constant types and some special constants. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2006 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 <stdexcept>
+#include <iostream>
#include "constant.h"
#include "numeric.h"
#include "ex.h"
-#include "print.h"
#include "archive.h"
-#include "debugmsg.h"
#include "utils.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 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++)
{
- 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++)
+ : basic(&constant::tinfo_static), name(initname), ef(efun), serial(next_serial++)
{
- debugmsg("constant ctor from string, function",LOGLEVEL_CONSTRUCT);
if (texname.empty())
TeX_name = "\\mbox{" + name + "}";
else
}
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++)
+ : basic(&constant::tinfo_static), name(initname), ef(0), number(initnumber), serial(next_serial++)
{
- debugmsg("constant ctor from string, numeric",LOGLEVEL_CONSTRUCT);
if (texname.empty())
TeX_name = "\\mbox{" + name + "}";
else
// 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)
// 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);
-
- 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
- c.s << name;
+ c.s << name;
}
-int constant::degree(const ex & s) const
+void constant::do_print_tree(const print_tree & c, unsigned level) const
{
- return is_equal(*s.bp) ? 1 : 0;
+ c.s << std::string(level, ' ') << name << " (" << class_name() << ")" << " @" << this
+ << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+ << std::endl;
}
-int constant::ldegree(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;
}
-ex constant::coeff(const ex & s, int n) const
+void constant::do_print_python_repr(const print_python_repr & c, unsigned level) const
{
- if (is_equal(*s.bp))
- return n==1 ? _ex1() : _ex0();
- else
- return n==0 ? *this : _ex0();
+ 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->evalf();
+ } else {
+ return number.evalf();
}
return *this;
}
* @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));
+ GINAC_ASSERT(is_exactly_a<constant>(other));
const constant &o = static_cast<const constant &>(other);
if (serial == o.serial)
bool constant::is_equal_same_type(const basic & other) const
{
- GINAC_ASSERT(is_exactly_of_type(other, constant));
+ GINAC_ASSERT(is_exactly_a<constant>(other));
const constant &o = static_cast<const constant &>(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((unsigned)tinfo() ^ serial);
+
setflag(status_flags::hash_calculated);
-
+
return hashvalue;
}
git://www.ginac.de / ginac.git / blobdiff