char *abs_file_name(const char *dir, const char *file_name);
void ignore(bool x OVS_UNUSED);
-int log_2_floor(uint32_t n);
+int log_2_floor(uint32_t);
+int ctz(uint32_t);
+
+bool is_all_zeros(const uint8_t *, size_t);
+bool is_all_ones(const uint8_t *, size_t);
#ifdef __cplusplus
}