[GiNaC-list] bugs in indexed object

[Dr. Mithun Bairagi]

Dear all ginac lovers, I have found simplify_indexed() is not working as expected.
I have compiled and run the following c++ program using ginac 1.87 (mingw64 compiler, windows 10 os),

#include <ginac/ginac.h>
using namespace GiNaC;
using namespace std;

int main()
{
        symbol A("A"), B("B"), C("C"), i_sym("i"),j_sym("j");
    varidx i(i_sym, 3);
    varidx ic(i_sym, 3,true);
    varidx j(j_sym, 3);
    varidx jc(j_sym, 3,true);

       ex e = indexed(A, {i,i}) * indexed(B, {ic,ic})-indexed(A, {j,j}) * indexed(B, {jc,jc});
       cout << (e).simplify_indexed() << endl;

       return 0;
}

the above program shows the following result:
A.i.i*B~symbol16.symbol16-A.i.i*B~symbol17.symbol17

But I think the result should be zero. Please tell me what is the problem here?

Best regards,
Mithun Bairagi

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.ginac.de/pipermail/ginac-list/attachments/20240414/7f73994c/attachment.htm>