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18
NEWS
18
NEWS
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@ -89,10 +89,10 @@ same type between zero (inclusive) and N (exclusive). The values
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returned have a uniform distribution.
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The optional argument STATE must be of the type produced by
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`(make-random-state)'. It defaults to the value of the variable
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`*random-state*'. This object is used to maintain the state of the
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pseudo-random-number generator and is altered as a side effect of
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the `random' operation.
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`copy-random-state' or `seed->random-state'. It defaults to the value
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of the variable `*random-state*'. This object is used to maintain the
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state of the pseudo-random-number generator and is altered as a side
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effect of the `random' operation.
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** New variable: *random-state*
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Holds a data structure that encodes the internal state of the
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@ -102,13 +102,17 @@ printed out and successfully read back in, but may or may not
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function correctly as a random-number state object in another
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implementation.
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** New function: make-random-state [STATE|SEED]
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** New function: copy-random-state [STATE]
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Returns a new object of type suitable for use as the value of the
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variable `*random-state*' and as a second argument to `random'.
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If argument STATE is given, a copy of it is returned. Otherwise a
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copy of `*random-state*' is returned.
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If SEED is given (a string or an integer), a new state is
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generated and initialized using SEED.
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** New function: seed->random-state SEED
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Returns a new object of type suitable for use as the value of the
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variable `*random-state*' and as a second argument to `random'.
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SEED is a string or a number. A new state is generated and
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initialized using SEED.
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** New function: random:uniform [STATE]
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Returns an uniformly distributed inexact real random number in the
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