%% Copyright (c) 1995,1996 by the University of Pennsylvania		%%

%% For information about the distributaion, copying, and modification	%%
%% of this software, please read the file COPYING located in the root	%%
%% directory of this distribnutaion. If you did not receive the file	%%
%% COPYING write to Philip Wickline at the address below.		%%

%% This program is distributed in the hope that it will be useful but	%%
%% WITHOUT ANY WARRANTY; without even the implied warranty of		%%
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the file	%%
%% COPYING for more details.						%%

%% For information about the structure of the Terzo lambdaProlog	%%
%% implementation, see the file src/README in this distribution. Please	%%
%% address any questions about this code or the Terzo lambdaProlog	%%
%% implementation to Philip Wickline at <philipw@saul.cis.upenn.edu>.	%%

%% Authors:								%%
%%	Philip Wickline <philipw@saul.cis.upenn.edu>			%%



%
% The is predicate provided by the Eval module performs built
% arithmetic and string operations, as in Prolog. For instance,
%
%?- X = 3 + 5.
%
%X = 3 + 5 
%
%?- X is 3 + 5.
%
%X = 8 


module Eval.
import Exception, Real, Int, String.

	type	is	A -> A -> o.
	infix	is	4.