1 files changed, 7 insertions, 0 deletions
diff --git a/src/common.cpp b/src/common.cpp
index 94248fb62..77caddfe8 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -47,6 +47,13 @@ void debugf(char const *fmt, ...);
 #include "range_cache.cpp"
 
 
+bool is_power_of_two(i64 x) {
+	if (x <= 0) {
+		return false;
+	}
+	return !(x & (x-1));
+}
+
 int isize_cmp(isize x, isize y) {
 	if (x < y) {
 		return -1;