+/* Multiply the constant polynomial "up" by "v".
+ */
+static __isl_give struct isl_upoly *isl_upoly_cst_scale_val(
+ __isl_take struct isl_upoly *up, __isl_keep isl_val *v)
+{
+ struct isl_upoly_cst *cst;
+
+ if (isl_upoly_is_zero(up))
+ return up;
+
+ up = isl_upoly_cow(up);
+ if (!up)
+ return NULL;
+
+ cst = isl_upoly_as_cst(up);
+
+ isl_int_mul(cst->n, cst->n, v->n);
+ isl_int_mul(cst->d, cst->d, v->d);
+ isl_upoly_cst_reduce(cst);
+
+ return up;
+}
+
+/* Multiply the polynomial "up" by "v".
+ */
+static __isl_give struct isl_upoly *isl_upoly_scale_val(
+ __isl_take struct isl_upoly *up, __isl_keep isl_val *v)
+{
+ int i;
+ struct isl_upoly_rec *rec;
+
+ if (!up)
+ return NULL;
+
+ if (isl_upoly_is_cst(up))
+ return isl_upoly_cst_scale_val(up, v);
+
+ up = isl_upoly_cow(up);
+ rec = isl_upoly_as_rec(up);
+ if (!rec)
+ goto error;
+
+ for (i = 0; i < rec->n; ++i) {
+ rec->p[i] = isl_upoly_scale_val(rec->p[i], v);
+ if (!rec->p[i])
+ goto error;
+ }
+
+ return up;
+error:
+ isl_upoly_free(up);
+ return NULL;
+}
+