// Example Ktensor for unit testing.
ktensor
3
2 3 3
2
1.0 2.0
facmatrix
2
2 2
0.5 0.1
0.5 0.9
facmatrix
2
3 2
1.0 2.0
3.0 4.0
5.0 6.0
facmatrix
2
3 2
1.0e-2 4.0e-2
2.0e-2 5.0e-2
3.0e-2 6.0e-2
