From: Jonas Fietz <fietz@ipd.info.uni-karlsruhe.de>
Date: Sat, 27 Feb 2010 01:32:32 +0000 (+0000)
Subject: add some documentation to vrp.h
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=a3b945db733b5acbf10bb2b8d4025ade442626e6;p=libfirm

add some documentation to vrp.h

[r27234]
---

diff --git a/include/libfirm/vrp.h b/include/libfirm/vrp.h
index 53e345418..68bdf69a9 100644
--- a/include/libfirm/vrp.h
+++ b/include/libfirm/vrp.h
@@ -30,16 +30,17 @@
 #define VRP_H
 
 enum range_types {
-	VRP_UNDEFINED,
-	VRP_RANGE,
-	VRP_ANTIRANGE,
-	VRP_VARYING
+	VRP_UNDEFINED, /* No information could be derived so far */
+	VRP_RANGE, /* bottom and top form a range, including both values */
+	VRP_ANTIRANGE, /* range from bottom to top can not be, but borders might
+					  be */
+	VRP_VARYING /* information can not be derived */
 };
 
 enum range_ops {
-	VRP_NONE,
-	VRP_ADD,
-	VRP_SUB
+	VRP_NONE, /* range is defined absolute */
+	VRP_ADD, /* range + range_node are the possible values */
+	VRP_SUB /* range - range_node are the possible values */
 };
 
 /**