% Date: Tue, 30 Aug 1994 10:30:39 +0200
% From: caprasse@vm1.ulg.ac.be (Hubert Caprasse)
% With rational on, some trigonometrical expressions don't simplify.

on rational;
sin(pi/2);    % Doesn't simplify.
cos(pi/2);    % Simplifies.
end;
