:- object(math_constants).
:- info([
author is 'Paulo Moura',
version is 1.0,
date is 2000/4/22,
comment is 'Implements predicates for retriving common mathematical constants.']).
:- public(pi/1).
:- mode(pi(-float), one).
:- public(e/1).
:- mode(e(-float), one).
pi(Pi) :-
Pi is 4.0*atan(1.0).
e(E) :-
E is exp(1.0).
:- end_object.
