common: bit_util: Add IsPow2 helper function

Makes use of std::has_single_bit() to check whether the value is a power of 2.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/common/bit_util.h b/src/common/bit_util.h
index eef8c1c5a..f50d3308a 100644
--- a/src/common/bit_util.h
+++ b/src/common/bit_util.h
@@ -46,6 +46,12 @@ template <typename T>
 }
 
 template <typename T>
+requires std::is_unsigned_v<T>
+[[nodiscard]] constexpr bool IsPow2(T value) {
+    return std::has_single_bit(value);
+}
+
+template <typename T>
 requires std::is_integral_v<T>
 [[nodiscard]] T NextPow2(T value) {
     return static_cast<T>(1ULL << ((8U * sizeof(T)) - std::countl_zero(value - 1U)));