int isl_basic_set_add_div_constraints_var(__isl_keep isl_basic_set *bset,
unsigned pos, isl_int *div);
int isl_basic_map_is_div_constraint(__isl_keep isl_basic_map *bmap,
int isl_basic_set_add_div_constraints_var(__isl_keep isl_basic_set *bset,
unsigned pos, isl_int *div);
int isl_basic_map_is_div_constraint(__isl_keep isl_basic_map *bmap,