No, it's obviously not random. It is carefully designed, but there is no regularity to it. The expression "random logic" is used to describe the circuitry that is "ad hoc" rather than a matrix, like RAM, registers, or an ALU.

Google the expression to learn more.

* http://www.google.co.uk/search?q=random+logic

* http://en.wikipedia.org/wiki/Random_logic