* Implementation of GiNaC's constant types and some special constants. */
/*
- * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2003 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
// public
-constant::constant() : basic(TINFO_constant), ef(0), number(0), serial(next_serial++) {}
+constant::constant() : basic(TINFO_constant), ef(0), number(0), serial(next_serial++)
+{
+ setflag(status_flags::evaluated | status_flags::expanded);
+}
// protected
// archiving
//////////
-constant::constant(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst) {}
+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)
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))
+ } 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(ex_to<basic>(s)) ? 1 : 0;
-}
-
-int constant::ldegree(const ex & s) const
-{
- return is_equal(ex_to<basic>(s)) ? 1 : 0;
-}
-
-ex constant::coeff(const ex & s, int n) const
-{
- if (is_equal(ex_to<basic>(s)))
- return n==1 ? _ex1 : _ex0;
- else
- return n==0 ? *this : _ex0;
-}
-
ex constant::evalf(int level) const
{
if (ef!=0) {
unsigned constant::calchash(void) const
{
hashvalue = golden_ratio_hash(tinfo() ^ serial);
- // mask out numeric hashes:
- hashvalue &= 0x7FFFFFFFU;
-
+
setflag(status_flags::hash_calculated);
-
+
return hashvalue;
}