* Implementation of GiNaC's symmetry definitions. */
/*
- * GiNaC Copyright (C) 1999-2007 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
#include <iostream>
#include <stdexcept>
#include <functional>
+#include <limits>
#include "symmetry.h"
#include "lst.h"
// default constructor
//////////
-symmetry::symmetry() : inherited(&symmetry::tinfo_static), type(none)
+symmetry::symmetry() : type(none)
{
setflag(status_flags::evaluated | status_flags::expanded);
}
// other constructors
//////////
-symmetry::symmetry(unsigned i) : inherited(&symmetry::tinfo_static), type(none)
+symmetry::symmetry(unsigned i) : type(none)
{
indices.insert(i);
setflag(status_flags::evaluated | status_flags::expanded);
}
-symmetry::symmetry(symmetry_type t, const symmetry &c1, const symmetry &c2) : inherited(&symmetry::tinfo_static), type(t)
+symmetry::symmetry(symmetry_type t, const symmetry &c1, const symmetry &c2) : type(t)
{
add(c1); add(c2);
setflag(status_flags::evaluated | status_flags::expanded);
//////////
/** Construct object from archive_node. */
-symmetry::symmetry(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst)
+void symmetry::read_archive(const archive_node &n, lst &sym_lst)
{
+ inherited::read_archive(n, sym_lst);
unsigned t;
if (!(n.find_unsigned("type", t)))
throw (std::runtime_error("unknown symmetry type in archive"));
}
}
}
+GINAC_BIND_UNARCHIVER(symmetry);
/** Archive the object. */
void symmetry::archive(archive_node &n) const
}
}
-DEFAULT_UNARCHIVE(symmetry)
-
//////////
// functions overriding virtual functions from base classes
//////////
unsigned symmetry::calchash() const
{
- unsigned v = golden_ratio_hash((p_int)tinfo());
+ const void* this_tinfo = (const void*)typeid(*this).name();
+ unsigned v = golden_ratio_hash((p_int)this_tinfo);
if (type == none) {
v = rotate_left(v);
{
// Less than two elements? Then do nothing
if (symm.indices.size() < 2)
- return INT_MAX;
+ return std::numeric_limits<int>::max();
// Canonicalize children first
bool something_changed = false;
int child_sign = canonicalize(v, ex_to<symmetry>(*first));
if (child_sign == 0)
return 0;
- if (child_sign != INT_MAX) {
+ if (child_sign != std::numeric_limits<int>::max()) {
something_changed = true;
sign *= child_sign;
}
default:
break;
}
- return something_changed ? sign : INT_MAX;
+ return something_changed ? sign : std::numeric_limits<int>::max();
}