Expressible as a yes/no question that can be answered in any case by a computer in finite time.

Expressible as a yes/no question that a computer can answer within a finite period of time.

Capable of being computed, numbered, or reckoned.

may be computed or estimated; "a calculable risk"; "computable odds"; "estimable assets"

an object that performs some sort of computation or action when its compute() method is called