Numeric.add: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend as Numeric
Lines 51-54 of bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend&start_line=51&end_line=54

import Base
import bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/types/model.bend as T

def add(a: T.Int64, b: T.Int64) -> T.Int64:
  match a b:
    case T.I64{x} T.I64{y}:
      T.I64{from_nat(64n, Nat.add(unsigned(64n, x), unsigned(64n, y)))}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend&name=from_nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/spec/numeric.bend&name=unsigned
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/proofs/lib/lemmas/types/model.bend&name=Int64