// Exhaustive hand equity calculation.
func handEquityE(hole, board, deck []int32) float64 {
var sum, count float64
bLen := int32(len(board))
board = append(board, make([]int32, 5-bLen)...)
oHole := make([]int32, 2)
c1 := util.Comb(deck, 2)
for loop1 := true; loop1; {
loop1 = c1(oHole)
c2 := util.Comb(cards.Minus(deck, oHole), 5-bLen)
for loop2 := true; loop2; {
loop2 = c2(board[bLen:])
sum += EvalHands(board, hole, oHole)
count++
}
}
return sum / count
}
// 2 cards = 169 hands
// 5 cards = 134,459 hands
func TestIso(_ *testing.T) {
colex := newColex()
canonical := newCanonical()
var count int
t0 := time.Now()
hands := make([]hand, binomial(52, 5))
hand := make([]int32, 5)
deck := NewDeck()
c1 := util.Comb(deck, 5)
for loop := true; loop; {
loop = c1(hand)
hands[colex(canonical(hand))].count++
}
t1 := time.Now()
for _, v := range hands {
if v.count != 0 {
count++
}
}
fmt.Println(t1.Sub(t0), count)
}