Method add

g2all/700/module/int64.js:93–98

(b)

  }

  add(b) {
    const values = lohi_from_one(b);
    const u32 = this._u32;
    const low = u32[0] + values[0];
    return new this.constructor(low >>> 0, (u32[1] + values[1] + (low > 0xffffffff)) >>> 0);
  }

  sub(b) {
    const values = lohi_from_one(b);