2 files changed, 16 insertions, 0 deletions
diff --git a/pkg/bits/bits32.go b/pkg/bits/bits32.go
index 4e9e45dce..28134a9e7 100755
--- a/pkg/bits/bits32.go
+++ b/pkg/bits/bits32.go
@@ -23,3 +23,11 @@ func Mask32(is ...int) uint32 {
 func MaskOf32(i int) uint32 {
 	return uint32(1) << uint32(i)
 }
+
+// IsPowerOfTwo returns true if v is power of 2.
+func IsPowerOfTwo32(v uint32) bool {
+	if v == 0 {
+		return false
+	}
+	return v&(v-1) == 0
+}
diff --git a/pkg/bits/bits64.go b/pkg/bits/bits64.go
index f49158792..73117b19b 100755
--- a/pkg/bits/bits64.go
+++ b/pkg/bits/bits64.go
@@ -23,3 +23,11 @@ func Mask64(is ...int) uint64 {
 func MaskOf64(i int) uint64 {
 	return uint64(1) << uint64(i)
 }
+
+// IsPowerOfTwo returns true if v is power of 2.
+func IsPowerOfTwo64(v uint64) bool {
+	if v == 0 {
+		return false
+	}
+	return v&(v-1) == 0
+}