LeftRight library is used to pack two separate data (each 128-bit) into a single 256-bit slot. There are multiple functions to add values to the right slot and left slot.
The functions to add value to the right slot are:
The functions to add value to the left slot are:
When we compare it to right slot functions, it looks like the function with uint256 self and int128 left parameters is missing.
Consider adding a function called toLeftSlot(uint256 self, int128 left), if necessary.
