27 lines
1.1 KiB
Factor
27 lines
1.1 KiB
Factor
! Copyright (C) 2009 Daniel Ehrenberg
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! See http://factorcode.org/license.txt for BSD license.
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USING: help.syntax help.markup math ;
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IN: math.bits
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ABOUT: "math.bits"
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ARTICLE: "math.bits" "Number bits virtual sequence"
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{ $subsection bits }
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{ $subsection <bits> }
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{ $subsection make-bits } ;
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HELP: bits
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{ $class-description "Virtual sequence class of bits of a number. The first bit is the least significant bit. This can be constructed with " { $link <bits> } " or " { $link make-bits } "." } ;
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HELP: <bits>
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{ $values { "number" integer } { "length" integer } { "bits" bits } }
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{ $description "Creates a virtual sequence of bits of a number in little endian order, with the given length." } ;
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HELP: make-bits
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{ $values { "number" integer } { "bits" bits } }
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{ $description "Creates a " { $link bits } " object out of the given number, using its log base 2 as the length. This implies that the last element, corresponding to the most significant bit, will be 1." }
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{ $examples
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{ $example "USING: math.bits prettyprint arrays ;" "BIN: 1101 make-bits >array ." "{ t f t t }" }
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{ $example "USING: math.bits prettyprint arrays ;" "-3 make-bits >array ." "{ t f }" }
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} ;
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