let caml_create_bytes: int => bytes;
let caml_fill_bytes: bytes => int => int => char => unit;
let get: bytes => int => char;
let set: bytes => int => char => unit;
let bytes_to_string: bytes => string;
let caml_blit_bytes: bytes => int => bytes => int => int => unit;
let caml_blit_string: string => int => bytes => int => int => unit;
let bytes_of_string: string => bytes;
let caml_bytes_compare: bytes => bytes => int;
let caml_bytes_greaterthan: bytes => bytes => bool;
let caml_bytes_greaterequal: bytes => bytes => bool;
let caml_bytes_lessthan: bytes => bytes => bool;
let caml_bytes_lessequal: bytes => bytes => bool;
let caml_bytes_equal: bytes => bytes => bool;