Suggested-by: Andrew Jones <drjo...@redhat.com> Reviewed-by: Andrew Jones <drjo...@redhat.com> Signed-off-by: Peter Xu <pet...@redhat.com> --- lib/libcflat.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/lib/libcflat.h b/lib/libcflat.h
index c622198..8455c3d 100644
--- a/lib/libcflat.h
+++ b/lib/libcflat.h
@@ -104,4 +104,9 @@ do {
\
} \
} while (0)
+static inline bool is_power_of_2(unsigned long n)
+{
+ return n && !(n & (n - 1));
+}
+
#endif
--
2.7.4
