fn main() {
    let cap: u64 = 16384;
    let base_addr: u64 = 0x23af1200000;
    let pairsz: u64 = 64;
    let cnry_addr: u64 = 0x23af13075c8;

    let rel_addr = cnry_addr - base_addr;
    let hashes_size = 8 * cap;
    let pairs_size = pairsz * cap;
    let pairs_offset = round_up_to_next(hashes_size, 8);

    let bucket_offset = rel_addr - pairs_offset;
    let bucket_idx = bucket_offset / pairsz;

    println!("pairs_size: {}, offset: {} idx: {}", pairs_size, bucket_offset, bucket_idx);
}


#[inline]
fn round_up_to_next(unrounded: u64, target_alignment: u64) -> u64 {
    assert!(target_alignment.is_power_of_two(), "HashMap Corruption - alignment not power of two");
    (unrounded + target_alignment - 1) & !(target_alignment - 1)
}