Sieve of Eratosthenes: Difference between revisions
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→Bounded sieve: upd link to the SWISH entry |
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</pre> |
</pre> |
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====Sift the Two's and Sift the Three's==== |
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Another version, based on Cloksin&Mellish p.175, modified to stop early as well as to work with odds only and use addition in the removing predicate, instead of the <code>mod</code> testing as the original was doing: |
Another version, based on Cloksin&Mellish p.175, modified to stop early as well as to work with odds only and use addition in the removing predicate, instead of the <code>mod</code> testing as the original was doing: |
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<lang Prolog>primes(N,[]):- N < 2, !. |
<lang Prolog>primes(N,[]):- N < 2, !. |
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