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Revision 3567, 0.7 KB
(checked in by pmoura, 21 months ago)
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Added predicate product/2.
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Author Date Id Revision
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| 2 | :- protocol(numberlistp). |
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| 3 | |
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| 4 | :- info([ |
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| 5 | version is 1.1, |
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| 6 | author is 'Paulo Moura', |
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| 7 | date is 2007/4/20, |
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| 8 | comment is 'List of numbers protocol.']). |
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| 9 | |
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| 10 | :- public(product/2). |
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| 11 | :- mode(product(+list(number), ?number), zero_or_one). |
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| 12 | :- info(product/2, |
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| 13 | [comment is 'Calculates the product of all list values.', |
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| 14 | argnames is ['List', 'Product']]). |
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| 15 | |
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| 16 | :- public(sum/2). |
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| 17 | :- mode(sum(+list(number), ?number), zero_or_one). |
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| 18 | :- info(sum/2, |
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| 19 | [comment is 'Calculates the sum of all list values.', |
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| 20 | argnames is ['List', 'Sum']]). |
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| 21 | |
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| 22 | :- public(average/2). |
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| 23 | :- mode(average(+list(number), ?float), zero_or_one). |
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| 24 | :- info(average/2, |
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| 25 | [comment is 'Calculates the average of a list of values.', |
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| 26 | argnames is ['List', 'Average']]). |
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| 27 | |
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| 28 | :- end_protocol. |
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