bugtool - Collect version information for all running Open vSwitch daemons.

[sliver-openvswitch.git] / lib / util.h

diff --git a/lib/util.h b/lib/util.h
index d504f2f..9318fa7 100644 (file)
--- a/lib/util.h
+++ b/lib/util.h
@@ -78,6 +78,20 @@ extern const char *program_name;
 /* Returns true if X is a power of 2, otherwise false. */
 #define IS_POW2(X) ((X) && !((X) & ((X) - 1)))
 
+static inline bool
+is_pow2(uintmax_t x)
+{
+    return IS_POW2(x);
+}
+
+/* Returns the rightmost 1-bit in 'x' (e.g. 01011000 => 00001000), or 0 if 'x'
+ * is 0. */
+static inline uintmax_t
+rightmost_1bit(uintmax_t x)
+{
+    return x & -x;
+}
+
 #ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
 #endif