From 2f0e2397bd8e879bd109a969deb4a56fbb7f12b2 Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <Patrick.Pelissier@gmail.com>
Date: Mon, 14 Aug 2017 17:06:14 +0200
Subject: [PATCH] Add function _swap

---
 m-i-list.h | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/m-i-list.h b/m-i-list.h
index 43f914a0..9d3155c4 100644
--- a/m-i-list.h
+++ b/m-i-list.h
@@ -439,5 +439,16 @@ typedef struct ilist_head_s {
     ILISTI_CONTRACT(name, nv);						\
     ILISTI_CONTRACT(name, ov);						\
   }									\
-
+									\
+  static inline void							\
+  M_C(name, _swap)(list_t d, list_t e)					\
+  {									\
+    ILISTI_CONTRACT(name, d);						\
+    ILISTI_CONTRACT(name, e);						\
+    M_SWAP(struct ilist_head_s *, d->name.next, e->name.next);		\
+    M_SWAP(struct ilist_head_s *, d->name.prev, e->name.prev);		\
+    ILISTI_CONTRACT(name, d);						\
+    ILISTI_CONTRACT(name, e);						\
+  }									\
+  
 #endif