Exponentiation with real numbers.

[nicostream]

Yeah, sorry my english is not that great when it comes to the name of exact math functions. I just used the google translator. Thanks a lot, it should be working fine now

[pitfiend]

there's a way to calculate power of a number using logarithms, natural ones, if you want to do x^y you wrote exp(ln(x)*y), works with integers, floating point, negatives.