Method add

resources/vega.min.js:1052–1062

(t)

      ((this._partials = new Float64Array(32)), (this._n = 0));
    }
    add(t) {
      const e = this._partials;
      let n = 0;
      for (let r = 0; r < this._n && r < 32; r++) {
        const i = e[r],
          o = t + i,
          a = Math.abs(t) < Math.abs(i) ? t - (o - i) : i - (o - t);
        (a && (e[n++] = a), (t = o));
      }
      return ((e[n] = t), (this._n = n + 1), this);
    }
    valueOf() {
      const t = this._partials;
      let e,