From fda08da389f354d303fbaf2ad8ebdc9f7fdde972 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 25 Jun 2010 14:37:09 +0200
Subject: [PATCH] add isl_vec_add

---
 include/isl_vec.h |  2 ++
 isl_vec.c         | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/isl_vec.h b/include/isl_vec.h
index 746b70f1..dd15510f 100644
--- a/include/isl_vec.h
+++ b/include/isl_vec.h
@@ -43,6 +43,8 @@ void isl_vec_lcm(struct isl_vec *vec, isl_int *lcm);
 struct isl_vec *isl_vec_ceil(struct isl_vec *vec);
 struct isl_vec *isl_vec_normalize(struct isl_vec *vec);
 __isl_give isl_vec *isl_vec_scale(__isl_take isl_vec *vec, isl_int m);
+__isl_give isl_vec *isl_vec_add(__isl_take isl_vec *vec1,
+	__isl_take isl_vec *vec2);
 
 struct isl_vec *isl_vec_read_from_file(struct isl_ctx *ctx,
 		FILE *input, unsigned input_format);
diff --git a/isl_vec.c b/isl_vec.c
index c16d71a5..d3c11261 100644
--- a/isl_vec.c
+++ b/isl_vec.c
@@ -138,3 +138,23 @@ __isl_give isl_vec *isl_vec_scale(__isl_take isl_vec *vec, isl_int m)
 	isl_seq_scale(vec->el, vec->el, m, vec->size);
 	return vec;
 }
+
+__isl_give isl_vec *isl_vec_add(__isl_take isl_vec *vec1,
+	__isl_take isl_vec *vec2)
+{
+	vec1 = isl_vec_cow(vec1);
+	if (!vec1 || !vec2)
+		goto error;
+
+	isl_assert(vec1->ctx, vec1->size == vec2->size, goto error);
+
+	isl_seq_combine(vec1->el, vec1->ctx->one, vec1->el,
+			vec1->ctx->one, vec2->el, vec1->size);
+	
+	isl_vec_free(vec2);
+	return vec1;
+error:
+	isl_vec_free(vec1);
+	isl_vec_free(vec2);
+	return NULL;
+}
-- 
2.11.4.GIT