--- a/ucx/ucx.h	Tue Sep 03 12:08:35 2013 +0200
+++ b/ucx/ucx.h	Sat Sep 07 14:08:43 2013 +0200
@@ -36,6 +36,15 @@
 #ifndef UCX_H
 #define	UCX_H
 
+/** Major UCX version as integer constant. */
+#define UCX_VERSION_MAJOR   1
+
+/** Minor UCX version as integer constant. */
+#define UCX_VERSION_MINOR   0
+
+/** The UCX version in format [major].[minor] */
+#define UCX_VERSION UCX_VERSION_MAJOR.UCX_VERSION_MINOR
+
 #include <stdlib.h>
 
 #ifdef _WIN32
@@ -54,9 +63,11 @@
 #define _Bool bool
 #define restrict
 #endif
+/** Use C naming even when compiling with C++.  */
 #define UCX_EXTERN extern "C"
 extern "C" {
 #else
+/** Pointless in C. */
 #define UCX_EXTERN
 #endif