pub unsafe extern "C" fn mdbx_estimate_range(
txn: *const MDBX_txn,
dbi: u32,
begin_key: *const iovec,
begin_data: *const iovec,
end_key: *const iovec,
end_data: *const iovec,
distance_items: *mut isize,
) -> i32
Available on crate feature
mdbx
only.