PackingUtils

function pack(uint256[] _values, uint256[] _bitLengths) external pure returns (uint256 packed)

function unpack(uint256 _packed, uint256[] _bitLengths) external pure returns (uint256[] values)

function unpack256To64(uint256 _packed) external pure returns (uint64 a, uint64 b, uint64 c, uint64 d)

function unpackTriggerOrder(uint256 _packed) external pure returns (uint8 orderType, address trader, uint32 index)