Suggested-by: Andrew Jones <drjones@xxxxxxxxxx>
Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
lib/libcflat.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/libcflat.h b/lib/libcflat.h
index 72b1bf9..038ea1d 100644
--- a/lib/libcflat.h
+++ b/lib/libcflat.h
@@ -103,4 +103,9 @@ do { \
} \
} while (0)
+static inline bool is_power_of_2(unsigned long n)
+{
+ return n && !(n & (n - 1));
+}
+
#endif
--
2.7.4
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