The exponentiation operator ^ returns the result of a number raised to a power.
It is syntactic sugar for the POWER function, which is used underneath.
Any argument passed as a string is automatically converted into a number.
The following three expressions return the same result.
5 ^ 4 "5" ^ "4" POWER ( 5, 4 )
Contributors: Alberto Ferrari, Marco Russo, Danilo Beider, Kenneth Barber,