Function sameValue

test/compute-engine/factor.test.ts:267–271

(a: Expression, b: Expression)

  // factorPolynomial must return a fully-factored, prime-power form so that
  // partial-fraction decomposition sees irreducible factors. extractContent
  // only handled the numeric GCD, and pre-factored Multiply/Power inputs were
  // never recursed into — so x³+x² and x·(x²+x) came back unfactored.
  const sameValue = (a: Expression, b: Expression) => {
    for (const xv of [2, -3, 5, 0.7]) {
      expect(a.subs({ x: xv }).N().re).toBeCloseTo(b.subs({ x: xv }).N().re);
    }
  };