20 lines
459 B
Forth
20 lines
459 B
Forth
# Random Number Generator
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I/O device type 10 is a random number generator. I do this as
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part of the VM I/O extensions to allow implementors to use the
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best approach on their host system.
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~~~
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{{
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'io var
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:identify
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@io n:zero? 0; drop
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#10 io:scan-for dup n:negative?
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[ drop 'IO_DEVICE_TYPE_0010_NOT_FOUND s:put nl ]
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[ !io ] choose ;
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---reveal---
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:io:rng-operation identify @io io:invoke ;
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}}
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:n:random (-n) io:rng-operation ;
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~~~
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