Hash.S4: type of bend-kit-hash@0.3.0.2
Import: import bend-kit-hash@0.3.0.2/hash.bend as Hash
Lines 597-599 of bend-kit-hash@0.3.0.2/hash.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-hash@0.3.0.2/hash.bend&start_line=597&end_line=599

import Base

# SipHash-1-3 (Aumasson and Bernstein, 2012): one round per block, three to finish.
type S4 is Data:
  S4{v0: W64, v1: W64, v2: W64, v3: W64}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=W64