Function rocks_sys::rocks_db_get_approximate_sizes_cf

pub unsafe extern "C" fn rocks_db_get_approximate_sizes_cf(
    db: *mut rocks_db_t, 
    column_family: *mut rocks_column_family_handle_t, 
    num_ranges: usize, 
    range_start_ptrs: *const *const c_char, 
    range_start_lens: *const usize, 
    range_limit_ptrs: *const *const c_char, 
    range_limit_lens: *const usize, 
    sizes: *mut u64
)