Method update

packages/alphatab/src/zip/Crc32.ts:48–53

* Update CRC data checksum based on a portion of a block of data * @param data The array containing the data to add * @param offset Range start for data (inclusive) * @param count The number of bytes to checksum starting from offset

(data: Uint8Array, offset: number, count: number)

     * @param count The number of bytes to checksum starting from offset
     */
    public update(data: Uint8Array, offset: number, count: number) {
        for (let i = 0; i < count; i++) {
            this._checkValue =
                Crc32._crc32Lookup[(this._checkValue ^ data[offset + i]) & 0xff] ^ (this._checkValue >>> 8);
        }
    }

    /**
     * Resets the CRC data checksum as if no update was ever called.