Function engine

test/compute-engine/solve-diophantine.test.ts:434–441

(tuple: BoxedExpression, tv: number, t1: number, t2: number)

        ])
        .evaluate();
      const engine = (tuple: BoxedExpression, tv: number, t1: number, t2: number) => {
        const sub = { t: ce.number(tv), t_1: ce.number(t1), t_2: ce.number(t2) };
        return [
          tuple.op1.subs(sub).evaluate().re,
          tuple.op2.subs(sub).evaluate().re,
          tuple.op3.subs(sub).evaluate().re,
        ];
      };
      for (const [tv, t1, t2] of [
        [1, 2, 1],
        [2, 3, 1],