F64round.pb: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64round.bend as F64round
Lines 316-321 of bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64round.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64round.bend&start_line=316&end_line=321

import Base
import bend-collections-laws-math@1.0.0.0/spec/math/f64.bend as SF

def pb(+s: Bool, +one: Nat, +h1: {one == 1n : Nat}) -> {SF.pick(Nat, s, one, 0n) == SF.b2n(s) : Nat}:
  match s:
    case True{}:
      Equal.trans(Nat, SF.pick(Nat, True{}, one, 0n), one, SF.b2n(True{}), pk_t(Nat, one, 0n), h1)
    case False{}:
      Equal.trans(Nat, SF.pick(Nat, False{}, one, 0n), 0n, SF.b2n(False{}), pk_f(Nat, one, 0n), {==})

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.trans
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64round.bend&name=pk_f
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64round.bend&name=pk_t
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/spec/math/f64.bend&name=b2n
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/spec/math/f64.bend&name=pick