acerix / cnum

/**

 * @class Rational polynumber

 * @name Polyrat

 */

export class Polyrat {

  p: Rat[] = []

  /**

   * Evaluate the value at x.

   */

  // https://github.com/acerix/rational.js/blob/master/src/polyrat.js#L121

  evaluate(x: bigint): number {

    let v = 0

    this.p.forEach((r, i) => {

      v += (+r * Number(x))**i

    })

    return v

  }

  /**

   * Clone this.

   */

  clone(): Polyrat {

    const p = new Polyrat()

    for (const r of this.p) {

      p.p.push(r.clone())

    }

    return p

  }

}

export default Polyrat