18  t2_1(
i, 
j) = t3dg_2(N0, 
i, 
j);
 
   19  test_for_zero(t3dg_2(0, 0, 0) - t2_1(0, 0), 
"T2(i,j)=T3dg(N,i,j)(0,0,0)");
 
   20  test_for_zero(t3dg_2(0, 0, 1) - t2_1(0, 1), 
"T2(i,j)=T3dg(N,i,j)(0,0,1)");
 
   21  test_for_zero(t3dg_2(0, 0, 2) - t2_1(0, 2), 
"T2(i,j)=T3dg(N,i,j)(0,0,2)");
 
   22  test_for_zero(t3dg_2(0, 1, 0) - t2_1(1, 0), 
"T2(i,j)=T3dg(N,i,j)(0,1,0)");
 
   23  test_for_zero(t3dg_2(0, 1, 1) - t2_1(1, 1), 
"T2(i,j)=T3dg(N,i,j)(0,1,1)");
 
   24  test_for_zero(t3dg_2(0, 1, 2) - t2_1(1, 2), 
"T2(i,j)=T3dg(N,i,j)(0,1,2)");
 
   25  test_for_zero(t3dg_2(0, 2, 0) - t2_1(2, 0), 
"T2(i,j)=T3dg(N,i,j)(0,2,0)");
 
   26  test_for_zero(t3dg_2(0, 2, 1) - t2_1(2, 1), 
"T2(i,j)=T3dg(N,i,j)(0,2,1)");
 
   27  test_for_zero(t3dg_2(0, 2, 2) - t2_1(2, 2), 
"T2(i,j)=T3dg(N,i,j)(0,2,2)");
 
   29  t2_1(
i, 
j) = t3dg_2(N1, 
i, 
j);
 
   30  test_for_zero(t3dg_2(1, 0, 0) - t2_1(0, 0), 
"T2(i,j)=T3dg(N,i,j)(1,0,0)");
 
   31  test_for_zero(t3dg_2(1, 0, 1) - t2_1(0, 1), 
"T2(i,j)=T3dg(N,i,j)(1,0,1)");
 
   32  test_for_zero(t3dg_2(1, 0, 2) - t2_1(0, 2), 
"T2(i,j)=T3dg(N,i,j)(1,0,2)");
 
   33  test_for_zero(t3dg_2(1, 1, 0) - t2_1(1, 0), 
"T2(i,j)=T3dg(N,i,j)(1,1,0)");
 
   34  test_for_zero(t3dg_2(1, 1, 1) - t2_1(1, 1), 
"T2(i,j)=T3dg(N,i,j)(1,1,1)");
 
   35  test_for_zero(t3dg_2(1, 1, 2) - t2_1(1, 2), 
"T2(i,j)=T3dg(N,i,j)(1,1,2)");
 
   36  test_for_zero(t3dg_2(1, 2, 0) - t2_1(2, 0), 
"T2(i,j)=T3dg(N,i,j)(1,2,0)");
 
   37  test_for_zero(t3dg_2(1, 2, 1) - t2_1(2, 1), 
"T2(i,j)=T3dg(N,i,j)(1,2,1)");
 
   38  test_for_zero(t3dg_2(1, 2, 2) - t2_1(2, 2), 
"T2(i,j)=T3dg(N,i,j)(1,2,2)");
 
   40  t2_1(
i, 
j) = t3dg_2(N2, 
i, 
j);
 
   41  test_for_zero(t3dg_2(2, 0, 0) - t2_1(0, 0), 
"T2(i,j)=T3dg(N,i,j)(2,0,0)");
 
   42  test_for_zero(t3dg_2(2, 0, 1) - t2_1(0, 1), 
"T2(i,j)=T3dg(N,i,j)(2,0,1)");
 
   43  test_for_zero(t3dg_2(2, 0, 2) - t2_1(0, 2), 
"T2(i,j)=T3dg(N,i,j)(2,0,2)");
 
   44  test_for_zero(t3dg_2(2, 1, 0) - t2_1(1, 0), 
"T2(i,j)=T3dg(N,i,j)(2,1,0)");
 
   45  test_for_zero(t3dg_2(2, 1, 1) - t2_1(1, 1), 
"T2(i,j)=T3dg(N,i,j)(2,1,1)");
 
   46  test_for_zero(t3dg_2(2, 1, 2) - t2_1(1, 2), 
"T2(i,j)=T3dg(N,i,j)(2,1,2)");
 
   47  test_for_zero(t3dg_2(2, 2, 0) - t2_1(2, 0), 
"T2(i,j)=T3dg(N,i,j)(2,2,0)");
 
   48  test_for_zero(t3dg_2(2, 2, 1) - t2_1(2, 1), 
"T2(i,j)=T3dg(N,i,j)(2,2,1)");
 
   49  test_for_zero(t3dg_2(2, 2, 2) - t2_1(2, 2), 
"T2(i,j)=T3dg(N,i,j)(2,2,2)");