cc4531cd1e
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@53 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
31 lines
538 B
Plaintext
31 lines
538 B
Plaintext
|
|
:- protocol(numberlistp).
|
|
|
|
|
|
:- info([
|
|
version is 1.0,
|
|
authors is 'Paulo Moura',
|
|
date is 2000/7/24,
|
|
comment is 'List of numbers protocol.']).
|
|
|
|
|
|
:- public(sum/2).
|
|
|
|
:- mode(sum(+list, ?number), zero_or_one).
|
|
|
|
:- info(sum/2,
|
|
[comment is 'Calculates the sum of all list values.',
|
|
argnames is ['List', 'Sum']]).
|
|
|
|
|
|
:- public(average/2).
|
|
|
|
:- mode(average(+list, ?number), zero_or_one).
|
|
|
|
:- info(average/2,
|
|
[comment is 'Calculates the average of a list of values.',
|
|
argnames is ['List', 'Average']]).
|
|
|
|
|
|
:- end_protocol.
|