Infinity, MaxValue, Epsilon, etc.

[bricelam]

I'm surprised to find that Power Fx has no way to express these values. I'd propose adding the following.

Expression	Description
Infinity	Numeric literal for positive infinity
-Infinity	Numeric literal for negative infinity
Epsilon()	Returns the smallest positive value greater than zero
MaxValue()	Returns the largest possible numeric value
MinValue()	Returns the smallest possible numeric value

NaN is also worth considering, but I believe that's already handled as an error value.

Pi() already exists.

[bricelam]

E (Euler's number) is also worth considering.