rsys

commit 8108e0ad88837106d9da9a43088ae8bb40050bdd
parent 095a47078b742ef96e210dc7d472e7ebbc4ee26d
Author: vaplv <vaplv@free.fr>
Date:   Sat, 12 Oct 2013 15:17:50 +0200

Add the SWAP helper macro

Diffstat:
M
src/rsys.h
 | 
7
+++++++

1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/src/rsys.h b/src/rsys.h
@@ -132,6 +132,13 @@
       (Id) > CONCAT(end__, __LINE__);                                          \
       --(Id))
 
+#define SWAP(Type, A, B)                                                       \
+  {                                                                            \
+    Type tmp__ = (A);                                                          \
+    (A) = (B);                                                                 \
+    (B) = tmp__;                                                               \
+  } (void)0
+
 #define IS_MEMORY_OVERLAPPED(D0, Sz0, D1, Sz1)                                 \
   (((intptr_t)(D0) >= (intptr_t)(D1) &&                                        \
    (intptr_t)(D0) < ((intptr_t)(D1) + (intptr_t)(Sz1))) ||                     \