rocksdb_sys::rocksdb_comparator_create

pub unsafe extern fn rocksdb_comparator_create(state: *mut c_void, destructor: Option<extern fn(arg1: *mut c_void)>, compare: Option<extern fn(arg1: *mut c_void, a: *const c_char, alen: size_t, b: *const c_char, blen: size_t) -> c_int>, name: Option<extern fn(arg1: *mut c_void) -> *const c_char>) -> *mut rocksdb_comparator_t