Function absperf_minilzo::adler32_chain

pub fn adler32_chain(prev_checksum: u32, input: &[u8]) -> u32

Compute adler32. This is made to be chainable. On initial call, set the prev_checksum parameter to 1, or use the plain adler32 call given x: [u8; 4], adler32(&x) == adler32_chain(1, &x) == adler32_chain(adler32(&x[..2]), &x[2..])