function Long(low, high, unsigned) {

    /**
     * The low 32 bits as a signed value.
     * @type {number}
     */
    this.low = low | 0;

    /**
     * The high 32 bits as a signed value.
     * @type {number}
     */
    this.high = high | 0;

    /**
     * Whether unsigned or not.
     * @type {boolean}
     */
    this.unsigned = !!unsigned;
}
The low 32 bits as a signed value.
@type {number}