9{
   12 
   16 
   17  
   18 
   19  
   20 
   22                  - (t2s_1(0, 0) * t2s_2(0, 0) + t2s_1(0, 1) * t2s_2(0, 1)
   23                     + t2s_1(0, 2) * t2s_2(0, 2) + t2s_1(1, 0) * t2s_2(1, 0)
   24                     + t2s_1(1, 1) * t2s_2(1, 1) + t2s_1(1, 2) * t2s_2(1, 2)
   25                     + t2s_1(2, 0) * t2s_2(2, 0) + t2s_1(2, 1) * t2s_2(2, 1)
   26                     + t2s_1(2, 2) * t2s_2(2, 2)),
   27                "T2s(i,j)*T2s(i,j)");
   28 
   30                  - (t2s_1(0, 0) * t2s_2(0, 0) + t2s_1(0, 1) * t2s_2(1, 0)
   31                     + t2s_1(0, 2) * t2s_2(2, 0) + t2s_1(1, 0) * t2s_2(0, 1)
   32                     + t2s_1(1, 1) * t2s_2(1, 1) + t2s_1(1, 2) * t2s_2(2, 1)
   33                     + t2s_1(2, 0) * t2s_2(0, 2) + t2s_1(2, 1) * t2s_2(1, 2)
   34                     + t2s_1(2, 2) * t2s_2(2, 2)),
   35                "T2s(i,j)*T2s(j,i)");
   36}
FTensor::Index< 'i', SPACE_DIM > i
FTensor::Index< 'j', 3 > j
void test_for_zero(const T &t, const std::string &s)