#include "symmetry.h"
#include "lst.h"
#include "numeric.h" // for factorial()
-#include "print.h"
+#include "operators.h"
#include "archive.h"
#include "utils.h"
namespace GiNaC {
-GINAC_IMPLEMENT_REGISTERED_CLASS(symmetry, basic)
+GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(symmetry, basic,
+ print_func<print_context>(&symmetry::do_print).
+ print_func<print_tree>(&symmetry::do_print_tree))
/*
Some notes about the structure of a symmetry tree:
*/
//////////
-// default ctor, dtor, copy ctor, assignment operator and helpers
+// default constructor
//////////
symmetry::symmetry() : type(none)
tinfo_key = TINFO_symmetry;
}
-void symmetry::copy(const symmetry & other)
-{
- inherited::copy(other);
- type = other.type;
- indices = other.indices;
- children = other.children;
-}
-
-DEFAULT_DESTROY(symmetry)
-
//////////
// other constructors
//////////
//////////
/** Construct object from archive_node. */
-symmetry::symmetry(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
+symmetry::symmetry(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst)
{
unsigned t;
if (!(n.find_unsigned("type", t)))
return 0;
}
-void symmetry::print(const print_context & c, unsigned level) const
+void symmetry::do_print(const print_context & c, unsigned level) const
{
- if (is_a<print_tree>(c)) {
-
- c.s << std::string(level, ' ') << class_name()
- << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
- << ", type=";
-
+ if (children.empty()) {
+ if (indices.size() > 0)
+ c.s << *(indices.begin());
+ else
+ c.s << "none";
+ } else {
switch (type) {
- case none: c.s << "none"; break;
- case symmetric: c.s << "symm"; break;
- case antisymmetric: c.s << "anti"; break;
- case cyclic: c.s << "cycl"; break;
- default: c.s << "<unknown>"; break;
+ case none: c.s << '!'; break;
+ case symmetric: c.s << '+'; break;
+ case antisymmetric: c.s << '-'; break;
+ case cyclic: c.s << '@'; break;
+ default: c.s << '?'; break;
}
-
- c.s << ", indices=(";
- if (!indices.empty()) {
- std::set<unsigned>::const_iterator i = indices.begin(), end = indices.end();
- --end;
- while (i != end)
- c.s << *i++ << ",";
- c.s << *i;
+ c.s << '(';
+ size_t num = children.size();
+ for (size_t i=0; i<num; i++) {
+ children[i].print(c);
+ if (i != num - 1)
+ c.s << ",";
}
- c.s << ")\n";
+ c.s << ')';
+ }
+}
- unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
- exvector::const_iterator i = children.begin(), end = children.end();
- while (i != end) {
- i->print(c, level + delta_indent);
- ++i;
- }
+void symmetry::do_print_tree(const print_tree & c, unsigned level) const
+{
+ c.s << std::string(level, ' ') << class_name() << " @" << this
+ << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+ << ", type=";
+
+ switch (type) {
+ case none: c.s << "none"; break;
+ case symmetric: c.s << "symm"; break;
+ case antisymmetric: c.s << "anti"; break;
+ case cyclic: c.s << "cycl"; break;
+ default: c.s << "<unknown>"; break;
+ }
- } else {
+ c.s << ", indices=(";
+ if (!indices.empty()) {
+ std::set<unsigned>::const_iterator i = indices.begin(), end = indices.end();
+ --end;
+ while (i != end)
+ c.s << *i++ << ",";
+ c.s << *i;
+ }
+ c.s << ")\n";
- if (children.empty()) {
- if (indices.size() > 0)
- c.s << *(indices.begin());
- else
- c.s << "none";
- } else {
- switch (type) {
- case none: c.s << '!'; break;
- case symmetric: c.s << '+'; break;
- case antisymmetric: c.s << '-'; break;
- case cyclic: c.s << '@'; break;
- default: c.s << '?'; break;
- }
- c.s << '(';
- unsigned num = children.size();
- for (unsigned i=0; i<num; i++) {
- children[i].print(c);
- if (i != num - 1)
- c.s << ",";
- }
- c.s << ')';
- }
+ exvector::const_iterator i = children.begin(), end = children.end();
+ while (i != end) {
+ i->print(c, level + c.delta_indent);
+ ++i;
}
}
if (num < 2)
return e;
- // Transform object vector to a list
- exlist iv_lst;
- iv_lst.insert(iv_lst.begin(), first, last);
- lst orig_lst(iv_lst, true);
+ // Transform object vector to a lst (for subs())
+ lst orig_lst(first, last);
// Create index vectors for permutation
unsigned *iv = new unsigned[num], *iv2;
lst new_lst;
for (unsigned i=0; i<num; i++)
new_lst.append(orig_lst.op(iv[i]));
- ex term = e.subs(orig_lst, new_lst);
+ ex term = e.subs(orig_lst, new_lst, subs_options::no_pattern);
if (asymmetric) {
memcpy(iv2, iv, num * sizeof(unsigned));
term *= permutation_sign(iv2, iv2 + num);
if (num < 2)
return e;
- // Transform object vector to a list
- exlist iv_lst;
- iv_lst.insert(iv_lst.begin(), first, last);
- lst orig_lst(iv_lst, true);
+ // Transform object vector to a lst (for subs())
+ lst orig_lst(first, last);
lst new_lst = orig_lst;
// Loop over all cyclic permutations (the first permutation, which is
for (unsigned i=0; i<num-1; i++) {
ex perm = new_lst.op(0);
new_lst.remove_first().append(perm);
- sum += e.subs(orig_lst, new_lst);
+ sum += e.subs(orig_lst, new_lst, subs_options::no_pattern);
}
return sum / num;
}
/** Symmetrize expression over a list of objects (symbols, indices). */
ex ex::symmetrize(const lst & l) const
{
- exvector v;
- v.reserve(l.nops());
- for (unsigned i=0; i<l.nops(); i++)
- v.push_back(l.op(i));
+ exvector v(l.begin(), l.end());
return symm(*this, v.begin(), v.end(), false);
}
/** Antisymmetrize expression over a list of objects (symbols, indices). */
ex ex::antisymmetrize(const lst & l) const
{
- exvector v;
- v.reserve(l.nops());
- for (unsigned i=0; i<l.nops(); i++)
- v.push_back(l.op(i));
+ exvector v(l.begin(), l.end());
return symm(*this, v.begin(), v.end(), true);
}
* (symbols, indices). */
ex ex::symmetrize_cyclic(const lst & l) const
{
- exvector v;
- v.reserve(l.nops());
- for (unsigned i=0; i<l.nops(); i++)
- v.push_back(l.op(i));
+ exvector v(l.begin(), l.end());
return GiNaC::symmetrize_cyclic(*this, v.begin(), v.end());
}
git://www.ginac.de / ginac.git / blobdiff