diff --git a/src/util/util.h b/src/util/util.h
index aec42116b..7b69ec921 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -103,6 +103,7 @@ static inline unsigned next_power_of_two(unsigned v) {
 /**
    \brief Return the position of the most significant bit.
 */
+static inline unsigned log2(int v) { return std::bit_width((unsigned)v) - 1; }
 static inline unsigned log2(unsigned v) { return std::bit_width(v) - 1; }
 static inline unsigned log2(uint64_t v) { return std::bit_width(v) - 1; }