Add is_power_of_2() to test if a value is a power of 2.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
bits.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/bits.h b/bits.h
index c0dc952eaed9..63a663c248e4 100644
--- a/bits.h
+++ b/bits.h
@@ -58,4 +58,9 @@ static inline long long bits_extend(long long val, unsigned size, int is_signed)
return val;
}
+static inline int is_power_of_2(long long val)
+{
+ return val && !(val & (val - 1));
+}
+
#endif
--
2.29.2
