summate.c: barvinok_summate: ignore floors independent of variables

[barvinok.git] / tests / ehrhart / test-00102

5 5
   0    0    0    1   -1 
   1   -4    1    0  379 
   1    2   -1    0 -187 
   1   -2    1    0  188 
   1    0    1    0   -2 
1 4
   1    0    0    1