stratum-server 3.0.0-beta-9

The server code for the Rust Stratum (v1) implementation
Documentation 
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const MAX_DIFF: u64 = 9223372036854775808;

pub fn format_difficulty(diff: f64) -> u64 {
    let diff = diff.floor() as u64;
    if diff >= MAX_DIFF {
        return MAX_DIFF;
    }

    let mut new_diff: u64 = 1;
    let mut i = 0;
    while new_diff < diff {
        new_diff = new_diff << 1;
        i += 1;
    }
    assert!(i <= 63);
    return 1_u64 << i;
}