* Implementation of GiNaC's constant types and some special constants. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2002 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
#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)
//////////
-// default ctor, dtor, copy ctor assignment operator and helpers
+// default ctor, dtor, copy ctor, assignment operator and helpers
//////////
// public
-constant::constant() : basic(TINFO_constant), ef(0), number(0), serial(next_serial++)
-{
- debugmsg("constant default ctor",LOGLEVEL_CONSTRUCT);
-}
+constant::constant() : basic(TINFO_constant), ef(0), number(0), serial(next_serial++) {}
// protected
constant::constant(const std::string & initname, evalffunctype efun, const std::string & texname)
: basic(TINFO_constant), name(initname), ef(efun), number(0), serial(next_serial++)
{
- 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++)
{
- 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, const lst &sym_lst) : inherited(n, sym_lst) {}
ex constant::unarchive(const archive_node &n, const lst &sym_lst)
{
}
//////////
-// 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
{
- debugmsg("constant print", LOGLEVEL_PRINT);
-
- if (is_of_type(c, print_tree)) {
+ 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_of_type(c, print_latex))
+ } else if (is_a<print_latex>(c)) {
c.s << TeX_name;
- else
+ } 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;
}
-int constant::degree(const ex & s) const
-{
- return is_equal(*s.bp) ? 1 : 0;
-}
-
-int constant::ldegree(const ex & s) const
-{
- return is_equal(*s.bp) ? 1 : 0;
-}
-
-ex constant::coeff(const ex & s, int n) const
-{
- if (is_equal(*s.bp))
- return n==1 ? _ex1() : _ex0();
- else
- return n==0 ? *this : _ex0();
-}
-
ex constant::evalf(int level) const
{
if (ef!=0) {
// 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<constant &>(const_cast<basic &>(other));
- // return name.compare(o.name);
- const constant *o = static_cast<const constant *>(&other);
- if (serial==o->serial) return 0;
- return serial < o->serial ? -1 : 1;
+ GINAC_ASSERT(is_exactly_a<constant>(other));
+ const constant &o = static_cast<const constant &>(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<const constant *>(&other);
- return serial==o->serial;
+ GINAC_ASSERT(is_exactly_a<constant>(other));
+ const constant &o = static_cast<const constant &>(other);
+
+ return serial == o.serial;
}
unsigned constant::calchash(void) const
{
hashvalue = golden_ratio_hash(tinfo() ^ serial);
- // mask out numeric hashes:
- hashvalue &= 0x7FFFFFFFU;
-
+
setflag(status_flags::hash_calculated);
-
+
return hashvalue;
}