^                          Exponentiation

 exp1 ^ exp2
 exp1                    any expression
 exp2                    any expression

    ^ raises exp1 to the power represented by expr2. Example:

           i = 2 ^ 8;           # i == 256
           x = 3.4 ^ 5;         # x == 454.354
           j = 16 ^ 0.5;        # j = 4