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[ginac.git] / ginac / symmetry.cpp

diff --git a/ginac/symmetry.cpp b/ginac/symmetry.cpp
index 637e5abe1c3c83faf59e8b7102441e79eb350382..0cbf00cb0d9ba96a83aefc21c3c8523c4febc1ab 100644 (file)
--- a/ginac/symmetry.cpp
+++ b/ginac/symmetry.cpp
@@ -55,25 +55,25 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(symmetry, basic,
 // default constructor
 //////////
 
-symmetry::symmetry() : type(none)
+symmetry::symmetry() : inherited(TINFO_symmetry), type(none)
 {
-       tinfo_key = TINFO_symmetry;
+       setflag(status_flags::evaluated | status_flags::expanded);
 }
 
 //////////
 // other constructors
 //////////
 
-symmetry::symmetry(unsigned i) : type(none)
+symmetry::symmetry(unsigned i) : inherited(TINFO_symmetry), type(none)
 {
        indices.insert(i);
-       tinfo_key = TINFO_symmetry;
+       setflag(status_flags::evaluated | status_flags::expanded);
 }
 
-symmetry::symmetry(symmetry_type t, const symmetry &c1, const symmetry &c2) : type(t)
+symmetry::symmetry(symmetry_type t, const symmetry &c1, const symmetry &c2) : inherited(TINFO_symmetry), type(t)
 {
        add(c1); add(c2);
-       tinfo_key = TINFO_symmetry;
+       setflag(status_flags::evaluated | status_flags::expanded);
 }
 
 //////////
@@ -245,6 +245,72 @@ void symmetry::validate(unsigned n)
 // global functions
 //////////
 
+static const symmetry & index0()
+{
+       static ex s = (new symmetry(0))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+static const symmetry & index1()
+{
+       static ex s = (new symmetry(1))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+static const symmetry & index2()
+{
+       static ex s = (new symmetry(2))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+static const symmetry & index3()
+{
+       static ex s = (new symmetry(3))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & not_symmetric()
+{
+       static ex s = (new symmetry)->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & symmetric2()
+{
+       static ex s = (new symmetry(symmetry::symmetric, index0(), index1()))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & symmetric3()
+{
+       static ex s = (new symmetry(symmetry::symmetric, index0(), index1()))->add(index2()).setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & symmetric4()
+{
+       static ex s = (new symmetry(symmetry::symmetric, index0(), index1()))->add(index2()).add(index3()).setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & antisymmetric2()
+{
+       static ex s = (new symmetry(symmetry::antisymmetric, index0(), index1()))->setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & antisymmetric3()
+{
+       static ex s = (new symmetry(symmetry::antisymmetric, index0(), index1()))->add(index2()).setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
+const symmetry & antisymmetric4()
+{
+       static ex s = (new symmetry(symmetry::antisymmetric, index0(), index1()))->add(index2()).add(index3()).setflag(status_flags::dynallocated);
+       return ex_to<symmetry>(s);
+}
+
 class sy_is_less : public std::binary_function<ex, ex, bool> {
        exvector::iterator v;