from libc.stdint cimport int32_t, uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t
ctypedef float weight_t
ctypedef uint64_t hash_t
ctypedef uint64_t class_t
ctypedef uint64_t attr_t
ctypedef uint64_t flags_t
ctypedef uint16_t len_t
ctypedef uint16_t tag_t