def fst64

import bend-collections-laws-math@1.0.0.0/spec/math/random/source.bend as Source

import Base
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as W

9def fst64(-S: Data, p: W.U64 & S) -> W.U64:
10  (x, s) = p
11  x

Uses (3)