Exponentiation operator

Function definition:

func expon(_, { .is_zero }) { 1 }

func expon(base, exp { .is_neg }) {
    expon(1/base, -exp)
}

func expon(base, exp { .is_int }) {

  var c = 1
  while (exp > 1) {
    c *= base if exp.is_odd
    base *= base
    exp >>= 1
  }

  return (base * c)
}

say expon(3, 10)
say expon(5.5, -3)

Operator definition:

class Number {
    method ⊙(exp) {
        expon(self, exp)
    }
}

say (3 ⊙ 10)
say (5.5 ⊙ -3)

Output:

59049
0.00601051840721262208865514650638617581