Function bit_iter

hail-fuzz/src/coverage.rs:55–61

Returns an iterator of the bit index of all the bits in `array)

(array: &[u64])

/// Returns an iterator of the bit index of all the bits in `array)
pub(crate) fn bit_iter(array: &[u64]) -> impl Iterator<Item = usize> + '_ {
    array.iter().enumerate().flat_map(move |(byte_offset, &byte)| {
        (0..u64::BITS)
            .filter(move |bit| (byte & (1 << bit)) != 0)
            .map(move |bit| byte_offset * 64 + (bit as usize))
    })
}

/// Check whether `new` contains any bits not set in `existing`.
#[inline]