def Rational.cmp

bend-kit-bignum@0.1.0.0 · rational.bend:76

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

76# Denominators are positive, so cross-multiplying keeps the order.
77def Rational.cmp(a: Rational, b: Rational) -> Cmp:
78  match a b:
79    case Rational{an, ad} Rational{bn, bd}:
80      Big.BigInt.cmp(Big.BigInt.mul(an, bd), Big.BigInt.mul(bn, ad))