Hash.siphash13: def of bend-kit-hash@0.3.0.2
Import: import bend-kit-hash@0.3.0.2/hash.bend as Hash
Lines 642-644 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=642&end_line=644

import Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes

def siphash13(b: Bytes.Bytes, +k0: W64, +k1: W64) -> Bytes.Bytes & W64:
  Bytes.Bytes{+len, buf} = b
  sip.rest(len, dfrom(~S4, ~sip.block, U32.to_nat((len >> 3n : U32)), buf, 0, S4{W64.xor(k0, W64{1936682341, 1886610805}), W64.xor(k1, W64{1685025377, 1852075885}), W64.xor(k0, W64{1819895653, 1852142177}), W64.xor(k1, W64{1952801890, 2037671283})}))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shrn
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=S4
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=W64
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=W64.xor
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=dfrom
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=sip.block
  https://jend.leeeet.dev/definition.txt?path=bend-kit-hash@0.3.0.2/hash.bend&name=sip.rest