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.
Name:
Anonymous2014-03-22 8:23
In case you don't understand I'll spell it out for you:
Sqrt[2 * E * Pi]
is a computer representation, as an M-expression of a real number. The exact encoding of the M-expression is not really important, but ultimately it is encoded in binary.
The function N evaluates the precise "lossless" (if you will) computer representation of a real number into a lossy decimal representation to some specified amount of digits.
Nevertheless, it is evident that a computer can easily represent, manipulate and compute with, a real number.