13 lines
673 B
Factor
13 lines
673 B
Factor
! Copyright (C) 2012 John Benediktsson
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! See http://factorcode.org/license.txt for BSD license
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USING: help.markup help.syntax layouts math sequences ;
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IN: math.cardinality
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HELP: trailing-zeros
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{ $values { "m" number } { "n" number } }
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{ $description "Counts the number of trailing 0 bits in " { $snippet "m" } ", returning " { $link fixnum-bits } " if the number is zero." } ;
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HELP: estimate-cardinality
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{ $values { "seq" sequence } { "k" number } { "n" number } }
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{ $description "Estimates the number of unique elements in " { $snippet "seq" } "." $nl "The number " { $snippet "k" } " controls how many bits of hash to use, creating " { $snippet "2^k" } " buckets." } ;
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