Rational.Rational.neg: def of bend-kit-bignum@0.1.0.0
Import: import bend-kit-bignum@0.1.0.0/rational.bend as Rational
Lines 46-49 of bend-kit-bignum@0.1.0.0/rational.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-bignum@0.1.0.0/rational.bend&start_line=46&end_line=49

import Base
import bend-kit-bignum@0.1.0.0/bigint.bend as Big

def Rational.neg(r: Rational) -> Rational:
  match r:
    case Rational{n, d}:
      Rational{Big.BigInt.neg(n), d}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bignum@0.1.0.0/bigint.bend&name=BigInt.neg
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bignum@0.1.0.0/rational.bend&name=Rational