8{
   11 
   15 
   16  
   18  t2(
i, 
j) = t2_1(
i, 
j);
 
   19 
   23  test_for_zero(t2(0, 0) - (t2_1(0, 0) - 10), 
"T2(N,i)-=T(0,0)");
 
   24  test_for_zero(t2(0, 1) - (t2_1(0, 1) - 10), 
"T2(N,i)-=T(0,1)");
 
   25  test_for_zero(t2(0, 2) - (t2_1(0, 2) - 10), 
"T2(N,i)-=T(0,2)");
 
   26  test_for_zero(t2(1, 0) - (t2_1(1, 0) - 29), 
"T2(N,i)-=T(1,0)");
 
   27  test_for_zero(t2(1, 1) - (t2_1(1, 1) - 29), 
"T2(N,i)-=T(1,1)");
 
   28  test_for_zero(t2(1, 2) - (t2_1(1, 2) - 29), 
"T2(N,i)-=T(1,2)");
 
   29  test_for_zero(t2(2, 0) - (t2_1(2, 0) - 48), 
"T2(N,i)-=T(2,0)");
 
   30  test_for_zero(t2(2, 1) - (t2_1(2, 1) - 48), 
"T2(N,i)-=T(2,1)");
 
   31  test_for_zero(t2(2, 2) - (t2_1(2, 2) - 48), 
"T2(N,i)-=T(2,2)");
 
   32}
FTensor::Index< 'i', SPACE_DIM > i
FTensor::Index< 'j', 3 > j
void test_for_zero(const T &t, const std::string &s)