unsigned nparam, unsigned n_in, unsigned n_out);
__isl_give isl_space *isl_space_set_alloc(isl_ctx *ctx,
unsigned nparam, unsigned dim);
unsigned nparam, unsigned n_in, unsigned n_out);
__isl_give isl_space *isl_space_set_alloc(isl_ctx *ctx,
unsigned nparam, unsigned dim);