return result;
}
+DECLARE_FUNCTION_2P(symm_fcn)
+REGISTER_FUNCTION(symm_fcn, set_symmetry(sy_symm(0, 1)));
+DECLARE_FUNCTION_2P(anti_fcn)
+REGISTER_FUNCTION(anti_fcn, set_symmetry(sy_anti(0, 1)));
+
static unsigned symmetry_check(void)
{
// check symmetric/antisymmetric objects
unsigned result = 0;
idx i(symbol("i"), 3), j(symbol("j"), 3), k(symbol("k"), 3), l(symbol("l"), 3);
- symbol A("A"), B("B");
+ symbol A("A"), B("B"), C("C");
ex e;
result += check_equal(indexed(A, sy_symm(), i, j), indexed(A, sy_symm(), j, i));
result += check_equal(symmetrize(e), 0);
result += check_equal(antisymmetrize(e), e);
+ e = (indexed(A, sy_anti(), i, j, k, l) * (indexed(B, j) * indexed(C, k) + indexed(B, k) * indexed(C, j)) + indexed(B, i, l)).expand();
+ result += check_equal_simplify(e, indexed(B, i, l));
+
+ result += check_equal(symm_fcn(0, 1) + symm_fcn(1, 0), 2*symm_fcn(0, 1));
+ result += check_equal(anti_fcn(0, 1) + anti_fcn(1, 0), 0);
+ result += check_equal(anti_fcn(0, 0), 0);
+
return result;
}