def p_len_zeros
import bend-osdev-bytes@0.1.1.0/PROOF.bend as PROOFimport Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B
1118def p_len_zeros(+n: Nat) -> {B.Octets.len(B.Octets.zeros(n)) == n : Nat}:
1119 %F_zeros(n) : {B.w8s.len.fast(_) == n : Nat}
1120 %F_len(B.w8s.zeros(n)) : {_ == n : Nat}
1121 off.len_zeros(n)