Function times::mutbenchu64

pub fn mutbenchu64(
    lengths: Range<usize>,
    step: usize,
    repeats: usize,
    names: &[&str],
    closures: &[fn(_: &mut [u64])]
)

Tests of listed closures, named in names, on random data vectors of type specified by rn.
Lengths range is iterated over by step.
repeats runs of each closure for each length of data