Hello, you are correct that part of it is done to death for standard integer division.
The `new` thing is the range-splitting which achieves the floor division for negative inputs (eg. sign-selected for 60% of divisors, and the negative/positive bump for the remaining 20%/20% of cases each).
The `new` thing is the range-splitting which achieves the floor division for negative inputs (eg. sign-selected for 60% of divisors, and the negative/positive bump for the remaining 20%/20% of cases each).