Using our set of cards and our bit representations we can now evaluate poker hands using excessive bit twiddling. The general approach is to shuffle the bits for each suit around and combine them with various logical operations to work out what hand we have. We will work with bit

Card Bit Mask We already have one representation of cards using bit indices but there is another representation we could use that would be easier to work with when evaluating poker hands. A long can be split into 4 × 16 bit sections, each of which can represent a suit. 16

Many years ago I worked at a company that used a C library for evaluating poker hands. Never really understood how it worked; it used a lot of hard to read bit twiddling. A few years back I decided to see if I could come up with something similar in