diff --git a/include/libcamera/base/details/cxx20.h b/include/libcamera/base/details/cxx20.h
index 2d26db53e..8bf45ff11 100644
--- a/include/libcamera/base/details/cxx20.h
+++ b/include/libcamera/base/details/cxx20.h
@@ -7,9 +7,19 @@
 
 #pragma once
 
+#include <type_traits>
+
 namespace libcamera::details::cxx20 {
 
 template<typename T> struct type_identity { using type = T; };
 template<typename T> using type_identity_t = typename type_identity<T>::type;
 
+template<typename T>
+constexpr bool has_single_bit(T x) noexcept
+{
+	static_assert(std::is_unsigned_v<T>);
+
+	return x != 0 && (x & (x - 1)) == 0;
+}
+
 } /* namespace libcamera::details::cxx20 */