change lattice_point slightly (used in previous patch)

[barvinok.git] / tests / rays2

D 1
8 5
1   6   1  -6  -6 
1   0  -1   0   5
1   0   0   1   0 
1  -6  -1   5  11 
1   0   0  -1   1
1   0  -1   0   1
1   1   0   0  -1
1   0   1   0   0
F 0
4