ruint 1.6.0

Unsigned integer type with cont-generic bit length
Documentation 
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#![cfg(feature = "dyn")]
#![cfg(feature = "unstable")]
use smallvec::SmallVec;

/// ⚠️ Dynamically sized unsigned integer type.
///
/// **Warning.** This is not part of the stable API.
///
/// *Warning* This type is unstable can break in semver-compatible minor
/// releases.
pub struct UintDyn {
    _bit_len: usize,
    // OPT: `bit_len` and the size in SmallVec are redundant.
    _limbs:   SmallVec<[u64; 2]>,
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::Uint;

    #[test]
    fn test_sizes() {
        // UintDyn has one word overhead, but two words free compared to plain Vec.
        dbg!(std::mem::size_of::<Uint<64, 2>>());
        dbg!(std::mem::size_of::<Uint<64, 3>>());
        dbg!(std::mem::size_of::<Vec<u64>>());
        dbg!(std::mem::size_of::<UintDyn>());
    }
}