Convert 3d6 to a playing card

dice_to_card.pseudocode

# original idea and base logic from https://www.reddit.com/r/tinycode/comments/gap2jw/6bit_playing_card_deck/
dice_to_card(a,b,y) {
  suits = {2:'H', 3:'C', 4:'D', 5:'S'}
  if (y>1 and y<6) {
    # number cards
    rank = ceil(a/2) + (ceil(b/2)-1)*3
    if rank==1 rank = 10
    return rank, suits[y]
  }
  elif ((a==1 or a==6) and (b==1 or b==6)) {
    # jokers
    if y==1 return 'joker', 'lil'
    else    return 'joker', 'big'
  }
  else {
    # face cards
    ranks = ['J','Q','K','A']
    suitnum = 2 + floor(y/3) + ((a==1 or a==6 or b==1 or b==6)?1:0)
    return ranks[(a-b)%4], suits[suitnum]
  }
}