*
* Implementation of GiNaC's constant types and some special constants. */
+/*
+ * GiNaC Copyright (C) 1999-2000 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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
+ */
+
#include <string>
#include <stdexcept>
-#include "ginac.h"
+#include "constant.h"
+#include "numeric.h"
+#include "ex.h"
+#include "archive.h"
+#include "debugmsg.h"
+
+#ifndef NO_GINAC_NAMESPACE
+namespace GiNaC {
+#endif // ndef NO_GINAC_NAMESPACE
+
+GINAC_IMPLEMENT_REGISTERED_CLASS(constant, basic)
//////////
// default constructor, destructor, copy constructor assignment operator and helpers
// public
+constant::constant() :
+ basic(TINFO_constant), name(""), ef(0),
+ number(0), serial(next_serial++)
+{
+ debugmsg("constant default constructor",LOGLEVEL_CONSTRUCT);
+}
+
constant::~constant()
{
debugmsg("constant destructor",LOGLEVEL_DESTRUCT);
} else {
number = 0;
}
- fct_assigned=other.fct_assigned;
+ // fct_assigned=other.fct_assigned;
}
void constant::destroy(bool call_parent)
// public
-constant::constant(string const & initname, ex (*efun)()) :
- basic(TINFO_CONSTANT), name(initname), ef(efun),
- number(0), fct_assigned(true), serial(next_serial++)
+constant::constant(string const & initname, evalffunctype efun) :
+ basic(TINFO_constant), name(initname), ef(efun),
+ // number(0), fct_assigned(true), serial(next_serial++)
+ number(0), serial(next_serial++)
{
debugmsg("constant constructor from string, function",LOGLEVEL_CONSTRUCT);
}
constant::constant(string const & initname, numeric const & initnumber) :
- basic(TINFO_CONSTANT), name(initname), ef(0),
- number(new numeric(initnumber)), fct_assigned(false), serial(next_serial++)
+ basic(TINFO_constant), name(initname), ef(0),
+ number(new numeric(initnumber)), /* fct_assigned(false),*/ serial(next_serial++)
{
debugmsg("constant constructor from string, numeric",LOGLEVEL_CONSTRUCT);
}
+//////////
+// archiving
+//////////
+
+/** Construct object from archive_node. */
+constant::constant(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
+{
+ debugmsg("constant constructor from archive_node", LOGLEVEL_CONSTRUCT);
+}
+
+/** Unarchive the object. */
+ex constant::unarchive(const archive_node &n, const 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)
+ string s;
+ if (n.find_string("name", s)) {
+ if (s == Pi.name)
+ return Pi;
+ else if (s == Catalan.name)
+ return Catalan;
+ else if (s == EulerGamma.name)
+ return EulerGamma;
+ else
+ throw (std::runtime_error("unknown constant '" + s + "' in archive"));
+ } else
+ throw (std::runtime_error("unnamed constant in archive"));
+}
+
+/** Archive the object. */
+void constant::archive(archive_node &n) const
+{
+ inherited::archive(n);
+ n.add_string("name", name);
+}
+
//////////
// functions overriding virtual functions from bases classes
//////////
return new constant(*this);
}
+void constant::print(ostream & os, unsigned upper_precedence) const
+{
+ debugmsg("constant print",LOGLEVEL_PRINT);
+ os << name;
+}
+
+void constant::printraw(ostream & os) const
+{
+ debugmsg("constant printraw",LOGLEVEL_PRINT);
+ os << "constant(" << name << ")";
+}
+
+void constant::printtree(ostream & os, unsigned indent) const
+{
+ debugmsg("constant printtree",LOGLEVEL_PRINT);
+ os << string(indent,' ') << name
+ << ", type=" << typeid(*this).name()
+ << ", hash=" << hashvalue << " (0x" << hex << hashvalue << dec << ")"
+ << ", flags=" << flags << endl;
+}
+
+void constant::printcsrc(ostream & os, unsigned type, unsigned upper_precedence) const
+{
+ debugmsg("constant print csrc",LOGLEVEL_PRINT);
+ os << name;
+}
+
ex constant::evalf(int level) const
{
- if (fct_assigned) {
+ if (ef!=0) {
return ef();
} else if (number != 0) {
return *number;
int constant::compare_same_type(basic const & other) const
{
- ASSERT(is_exactly_of_type(other, constant));
+ GINAC_ASSERT(is_exactly_of_type(other, constant));
// constant const & o=static_cast<constant &>(const_cast<basic &>(other));
// return name.compare(o.name);
const constant *o = static_cast<const constant *>(&other);
bool constant::is_equal_same_type(basic const & other) const
{
- ASSERT(is_exactly_of_type(other, constant));
+ GINAC_ASSERT(is_exactly_of_type(other, constant));
const constant *o = static_cast<const constant *>(&other);
return serial==o->serial;
}
// global constants
//////////
-const constant some_constant("",0);
+const constant some_constant;
type_info const & typeid_constant=typeid(some_constant);
/** Pi. (3.14159...) Diverts straight into CLN for evalf(). */
/** Euler's constant. (0.57721...) Sometimes called Euler-Mascheroni constant.
* Diverts straight into CLN for evalf(). */
const constant Catalan("Catalan", CatalanEvalf);
+
+#ifndef NO_GINAC_NAMESPACE
+} // namespace GiNaC
+#endif // ndef NO_GINAC_NAMESPACE
git://www.ginac.de / ginac.git / blobdiff