Function mdbx_cursor_scan

pub unsafe extern "C" fn mdbx_cursor_scan(
    cursor: *mut MDBX_cursor,
    predicate: Option<unsafe extern "C" fn(*mut c_void, *mut iovec, *mut iovec, *mut c_void) -> i32>,
    context: *mut c_void,
    start_op: u32,
    turn_op: u32,
    arg: *mut c_void,
) -> i32

Available on crate feature mdbx only.