9{
   12 
   16 
   17  
   19  t2(
i, 
j) = t2_1(
i, 
j);
 
   20 
   21  
   22 
   23  t2(
i, 
j) -= 5 * t2_2(
i, 
j);
 
   25                "T2(i,j)-=T2(i,j)(0,0)");
   27                "T2(i,j)-=T2(i,j)(0,1)");
   29                "T2(i,j)-=T2(i,j)(0,2)");
   31                "T2(i,j)-=T2(i,j)(1,0)");
   33                "T2(i,j)-=T2(i,j)(1,1)");
   35                "T2(i,j)-=T2(i,j)(1,2)");
   37                "T2(i,j)-=T2(i,j)(2,0)");
   39                "T2(i,j)-=T2(i,j)(2,1)");
   41                "T2(i,j)-=T2(i,j)(2,2)");
   42}
FTensor::Index< 'i', SPACE_DIM > i
FTensor::Index< 'j', 3 > j
void test_for_zero(const T &t, const std::string &s)