6b4bde14e1
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1903 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
29 lines
742 B
Plaintext
29 lines
742 B
Plaintext
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:- protocol(numberlistp).
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:- info([
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version is 1.1,
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author is 'Paulo Moura',
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date is 2007/4/20,
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comment is 'List of numbers protocol.']).
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:- public(product/2).
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:- mode(product(+list(number), ?number), zero_or_one).
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:- info(product/2,
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[comment is 'Calculates the product of all list values.',
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argnames is ['List', 'Product']]).
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:- public(sum/2).
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:- mode(sum(+list(number), ?number), zero_or_one).
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:- info(sum/2,
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[comment is 'Calculates the sum of all list values.',
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argnames is ['List', 'Sum']]).
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:- public(average/2).
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:- mode(average(+list(number), ?float), zero_or_one).
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:- info(average/2,
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[comment is 'Calculates the average of a list of values.',
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argnames is ['List', 'Average']]).
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:- end_protocol.
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