Gb.m4: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/argon2/gb.bend as Gb
Lines 75-77 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/argon2/gb.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/argon2/gb.bend&start_line=75&end_line=77

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/blake/blake2b/types.bend as T
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/blake/blake2b.bend as B

# The specification's GB after its first k assignment pairs.
def m4(+a2: T.Lane, +b1: T.Lane, +c2: T.Lane, +d2: T.Lane) -> T.Quad:
  T.Q{a2, B.rotr(B.xor(b1, c2), 63n), c2, d2}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/blake/blake2b.bend&name=rotr
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/blake/blake2b.bend&name=xor
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/blake/blake2b/types.bend&name=Lane
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/blake/blake2b/types.bend&name=Quad