Reals

Why do so many languages include the type of "real" numbers if real numbers are physically impossible to represent in any computer? There are no and will never be realnums in any computer, stop deluding yourselves.

WTF?

Of course you can represent them in a computer. Even irrational ones. You represent them symbolically

e.g. the Lisp forms

'(sqrt 2)
pi

Represent irrational, real numbers.

Try using a CAS e.g. Maxima or Mathematica and learning how they work.