24 lines
1.0 KiB
Factor
24 lines
1.0 KiB
Factor
USING: help.markup help.syntax math ;
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IN: random
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ARTICLE: "random-numbers" "Generating random integers"
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"The " { $vocab-link "random" } " vocabulary implements the ``Mersenne Twister'' pseudo-random number generator algorithm."
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{ $subsection init-random }
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{ $subsection (random) }
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{ $subsection random } ;
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ABOUT: "random-numbers"
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HELP: init-random
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{ $values { "seed" integer } }
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{ $description "Initializes the random number generator with the given seed. This word is called on startup to initialize the random number generator with the current time." } ;
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HELP: (random)
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{ $values { "rand" "an integer between 0 and 2^32-1" } }
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{ $description "Generates a random 32-bit unsigned integer." } ;
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HELP: random
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{ $values { "seq" "a sequence" } { "elt" "a random element" } }
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{ $description "Outputs a random element of the sequence. If the sequence is empty, always outputs " { $link f } "." }
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{ $notes "Since integers are sequences, passing an integer " { $snippet "n" } " yields a random integer in the interval " { $snippet "[0,n)" } "." } ;
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