def le16.head
import bend-osdev-bytes@0.1.1.0/bytes.bend as Bytesimport Base
import bend-osdev-word64@0.1.1.0/word64.bend as W
151def le16.head(xs: List<&2, U32>) -> Maybe<&2, U32>:
152 match xs:
153 case Con{a, Con{b, t}}:
154 Some{U32{W.W64.bits.cat(16n, 16n, W.W64.bits.cat(8n, 8n, bits8(a), bits8(b)), Word.zero(16n))}}
155 case _:
156 None{}