X-Git-Url: http://review.tizen.org/git/?p=platform%2Fupstream%2Fisl.git;a=blobdiff_plain;f=isl_union_templ.c;h=65ab08fc8c4b7020d082209996ce92bf014279d3;hp=cd55f4e910ec5f2f081a2d9b36899751a0e5b083;hb=5d2531851d8a96864f01980f4dd7b597caced140;hpb=ed593595d0a9923d7299f7a79ac50331861a8090

diff --git a/isl_union_templ.c b/isl_union_templ.c
index cd55f4e..65ab08f 100644
--- a/isl_union_templ.c
+++ b/isl_union_templ.c
@@ -805,6 +805,70 @@ error:
 	return NULL;
 }
 
+/* Multiply *entry by the isl_val "user".
+ *
+ * Return 0 on success and -1 on error.
+ */
+static int scale_val(void **entry, void *user)
+{
+	PW **pw = (PW **)entry;
+	isl_val *v = user;
+
+	*pw = FN(PW,scale_val)(*pw, isl_val_copy(v));
+	if (!*pw)
+		return -1;
+
+	return 0;
+}
+
+/* Multiply "u" by "v" and return the result.
+ */
+__isl_give UNION *FN(UNION,scale_val)(__isl_take UNION *u,
+	__isl_take isl_val *v)
+{
+	if (!u || !v)
+		goto error;
+	if (isl_val_is_one(v)) {
+		isl_val_free(v);
+		return u;
+	}
+
+	if (DEFAULT_IS_ZERO && u && isl_val_is_zero(v)) {
+		UNION *zero;
+		isl_space *space = FN(UNION,get_space)(u);
+#ifdef HAS_TYPE
+		zero = FN(UNION,ZERO)(space, u->type);
+#else
+		zero = FN(UNION,ZERO)(space);
+#endif
+		FN(UNION,free)(u);
+		isl_val_free(v);
+		return zero;
+	}
+
+	if (!isl_val_is_rat(v))
+		isl_die(isl_val_get_ctx(v), isl_error_invalid,
+			"expecting rational factor", goto error);
+
+	u = FN(UNION,cow)(u);
+	if (!u)
+		return NULL;
+
+#ifdef HAS_TYPE
+	if (isl_val_is_neg(v))
+		u->type = isl_fold_type_negate(u->type);
+#endif
+	if (isl_hash_table_foreach(u->dim->ctx, &u->table, &scale_val, v) < 0)
+		goto error;
+
+	isl_val_free(v);
+	return u;
+error:
+	isl_val_free(v);
+	FN(UNION,free)(u);
+	return NULL;
+}
+
 S(UNION,plain_is_equal_data)
 {
 	UNION *u2;