X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_fold.c;h=4b7cd7674c76f3eedce52c201f2934200efab78c;hb=ca90b151a05f17ccc1c3215ff24dc5d7b9198ff4;hp=1c3abe813bfa3ea15c534cf30454df7bc2e2b9c0;hpb=056289f285e62c52cc59ee826172e4d3092ef3fe;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_fold.c b/isl_fold.c
index 1c3abe8..4b7cd76 100644
--- a/isl_fold.c
+++ b/isl_fold.c
@@ -638,6 +638,7 @@ __isl_give isl_qpolynomial_fold *isl_qpolynomial_fold_gist_params(
 #define DEFAULT_IS_ZERO 1
 
 #define NO_NEG
+#define NO_PULLBACK
 
 #include <isl_pw_templ.c>
 
@@ -649,6 +650,8 @@ __isl_give isl_qpolynomial_fold *isl_qpolynomial_fold_gist_params(
 #define PARTS pw_qpolynomial_fold
 #define ALIGN_DOMAIN
 
+#define NO_SUB
+
 #include <isl_union_templ.c>
 
 __isl_give isl_qpolynomial_fold *isl_qpolynomial_fold_empty(enum isl_fold type,
@@ -1627,3 +1630,50 @@ __isl_give isl_qpolynomial_fold *isl_qpolynomial_fold_scale(
 {
 	return isl_qpolynomial_fold_mul_isl_int(fold, v);
 }
+
+/* Multiply "fold" by "v".
+ */
+__isl_give isl_qpolynomial_fold *isl_qpolynomial_fold_scale_val(
+	__isl_take isl_qpolynomial_fold *fold, __isl_take isl_val *v)
+{
+	int i;
+
+	if (!fold || !v)
+		goto error;
+
+	if (isl_val_is_one(v)) {
+		isl_val_free(v);
+		return fold;
+	}
+	if (isl_val_is_zero(v)) {
+		isl_qpolynomial_fold *zero;
+		isl_space *space = isl_qpolynomial_fold_get_domain_space(fold);
+		zero = isl_qpolynomial_fold_empty(fold->type, space);
+		isl_qpolynomial_fold_free(fold);
+		isl_val_free(v);
+		return zero;
+	}
+	if (!isl_val_is_rat(v))
+		isl_die(isl_qpolynomial_fold_get_ctx(fold), isl_error_invalid,
+			"expecting rational factor", goto error);
+
+	fold = isl_qpolynomial_fold_cow(fold);
+	if (!fold)
+		goto error;
+
+	if (isl_val_is_neg(v))
+		fold->type = isl_fold_type_negate(fold->type);
+	for (i = 0; i < fold->n; ++i) {
+		fold->qp[i] = isl_qpolynomial_scale_val(fold->qp[i],
+							isl_val_copy(v));
+		if (!fold->qp[i])
+			goto error;
+	}
+
+	isl_val_free(v);
+	return fold;
+error:
+	isl_val_free(v);
+	isl_qpolynomial_fold_free(fold);
+	return NULL;
+}