X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_aff.c;h=85e4953e23fd5c3d68df54c9dc685733e2087baf;hb=de8a09c8327e8f060c2965b81082b5913e0ee8a6;hp=b316a3183c7c7a56b422bb3a25dc249c5e667a74;hpb=b04a20aa1edc4378618efa264a1da1e5d2afa83d;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_aff.c b/isl_aff.c
index b316a31..85e4953 100644
--- a/isl_aff.c
+++ b/isl_aff.c
@@ -433,6 +433,43 @@ __isl_give isl_aff *isl_aff_add_constant_si(__isl_take isl_aff *aff, int v)
 	return aff;
 }
 
+/* Add "v" to the numerator of the constant term of "aff".
+ */
+__isl_give isl_aff *isl_aff_add_constant_num(__isl_take isl_aff *aff, isl_int v)
+{
+	if (isl_int_is_zero(v))
+		return aff;
+
+	aff = isl_aff_cow(aff);
+	if (!aff)
+		return NULL;
+
+	aff->v = isl_vec_cow(aff->v);
+	if (!aff->v)
+		return isl_aff_free(aff);
+
+	isl_int_add(aff->v->el[1], aff->v->el[1], v);
+
+	return aff;
+}
+
+/* Add "v" to the numerator of the constant term of "aff".
+ */
+__isl_give isl_aff *isl_aff_add_constant_num_si(__isl_take isl_aff *aff, int v)
+{
+	isl_int t;
+
+	if (v == 0)
+		return aff;
+
+	isl_int_init(t);
+	isl_int_set_si(t, v);
+	aff = isl_aff_add_constant_num(aff, t);
+	isl_int_clear(t);
+
+	return aff;
+}
+
 __isl_give isl_aff *isl_aff_set_constant_si(__isl_take isl_aff *aff, int v)
 {
 	aff = isl_aff_cow(aff);
@@ -1099,6 +1136,16 @@ __isl_give isl_basic_set *isl_aff_nonneg_basic_set(__isl_take isl_aff *aff)
 	return bset;
 }
 
+/* Return a basic set containing those elements in the domain space
+ * of aff where it is negative.
+ */
+__isl_give isl_basic_set *isl_aff_neg_basic_set(__isl_take isl_aff *aff)
+{
+	aff = isl_aff_neg(aff);
+	aff = isl_aff_add_constant_num_si(aff, -1);
+	return isl_aff_nonneg_basic_set(aff);
+}
+
 /* Return a basic set containing those elements in the space
  * of aff where it is zero.
  */
@@ -2262,6 +2309,9 @@ __isl_give isl_multi_aff *isl_multi_aff_set_dim_name(
 	maff->space = isl_space_set_dim_name(maff->space, type, pos, s);
 	if (!maff->space)
 		return isl_multi_aff_free(maff);
+
+	if (type == isl_dim_out)
+		return maff;
 	for (i = 0; i < maff->n; ++i) {
 		maff->p[i] = isl_aff_set_dim_name(maff->p[i], type, pos, s);
 		if (!maff->p[i])