Sized.chain: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/blake/blake2b/sized.bend as Sized
Lines 79-83 of bend-collections@1.0.0.0/src/crypto/blake/blake2b/sized.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/blake/blake2b/sized.bend&start_line=79&end_line=83

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

# The chaining value after every block: dd - 1 = (ll - 1) div 128 full blocks,
# then the last one (RFC 7693 section 3.3).
def chain(+nn: Nat, a: Array<U32>, +ll: Nat) -> T.Chain:
  +n = Nat.div(Nat.sub(ll, 1n), 128n)
  B.blocks(n, 0, Nat.sub(ll, Nat.mul(n, 128n)), T.C{0, 0, 0, 0}, (a, initial(U32.from_nat(nn))))

Uses (12):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.div
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  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=bend-collections@1.0.0.0/src/crypto/blake/blake2b/blake2b.bend&name=blocks
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/blake/blake2b/sized.bend&name=initial
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/blake/blake2b/types.bend&name=Chain
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/blake/blake2b/types.bend&name=Counter