opPow, opDollar

[Matti Niemenmaa]

Don wrote:
> Yes, ^^ hasn't been used for exponentiation before. Fortran used ** 
> because it had such a limited character set, but it's not really a 
> natural choice; the more mathematically-oriented languages use ^. 
> Obviously C-family languages don't have that possibility.

Haskell has three exponentiation operators in the standard library: ^, 
^^, and **. They are for non-negative integral exponents, integral 
exponents, and floating-point exponents respectively.