enum isl_dim_type type, unsigned n);
__isl_give isl_aff *isl_aff_drop_dims(__isl_take isl_aff *aff,
enum isl_dim_type type, unsigned first, unsigned n);
enum isl_dim_type type, unsigned n);
__isl_give isl_aff *isl_aff_drop_dims(__isl_take isl_aff *aff,
enum isl_dim_type type, unsigned first, unsigned n);