export declare function getUint64(dataView: DataView, offset: number, littleEndian?: boolean): number;
export declare function setUint64(dataView: DataView, offset: number, value: number, littleEndian?: boolean): void;
export declare function getInt64(dataView: DataView, offset: number, littleEndian?: boolean): number;
export declare function setInt64(dataView: DataView, offset: number, value: number, littleEndian?: boolean): void;