Module card

Card

A card is an integer is made up of four bytes. The high-order bytes are used to hold the rank bit pattern, whereas the low-order bytes hold the suit/rank/prime value of the card.

xxxAKQJT	98765432	cdhsrrrr	sspppppp
xxxbbbbb	bbbbbbbb	cdhsrrrr	sspppppp

Where

Key	Definition
p	Prime number of rank
s	Suit of card (clubs=00, diamonds=01, hearts=10, spades=11)
r	Rank of card
cdhs	bit turned on depending on suit of card (spades=0001,…,clubs=1000)
b	bit turned on depending on rank of card

As an example, the Five of Hearts would be represented as

xxxAKQJT	98765432	cdhsrrrr	sspppppp
00000000	00001000	00100011	01000111	= 0x00082347 = 533319

More information about the card is presented in a table below

	2	3	4	5	6	7	8	9	10	J	Q	K	A
Ranks	0	1	2	3	4	5	6	7	8	9	10	11	12
Primes	2	3	5	7	11	13	17	19	23	29	31	37	41

Functions

create

Create the card from given rank and suit

get_primes

Extract the primes from the card

get_rank

Extract the rank value from the card

get_rank_string

Convert the card to readable rank

get_suit

Extract the suit value from the card

get_suit_string

Convert the card to readable suit

is_black

Check if the card’s current suit is black

is_clubs

Check if the card’s current suit is clubs

is_diamonds

Check if the card’s current suit is diamonds

is_hearts

Check if the card’s current suit is hearts

is_red

Check if the card’s current suit is red

is_spades

Check if the card’s current suit is spades

rank_of

Check if the card’s current suit matches the given value

to_string

Convert the card to readable string