Function blake3_std::arith::hash8

pub fn hash8(
    inputs: &[*const u8; 8],
    blocks: usize,
    key: &[u32; 8],
    counter: u64,
    increment_counter: bool,
    flags: u8,
    flags_start: u8,
    flags_end: u8,
    out: &mut [u8; 256]
)