Argon2.rel: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/crypto/argon2/argon2.bend as Argon2
Lines 191-194 of bend-collections-laws-crypto@1.0.0.0/src/crypto/argon2/argon2.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/argon2/argon2.bend&start_line=191&end_line=194

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/w64.bend as X

# |W| - 1 - (|W| * (J1^2 / 2^32)) / 2^32
def rel(+w: Nat, +j1: U32) -> Nat:
  +x = X.hi(X.mul32(j1, j1))
  Nat.sub(Nat.sub(w, 1n), U32.to_nat(X.hi(X.mul32(U32.from_nat(w), x))))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.from_nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/w64.bend&name=hi
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/w64.bend&name=mul32