Difference between revisions of "Rn2"
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==References== | ==References== | ||
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[[Category:Random number functions]] | [[Category:Random number functions]] | ||
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Revision as of 03:32, 27 February 2022
| rn2(x) | |
|---|---|
 Probability mass function of rn2(10). | |
| Distribution | uniform |
| Mean | 
|
| Standard deviation | 
|
rn2(x)[1] is a pseudo-random number function used in NetHack when a result should be unweighted. The range of values is between 0 and x-1 inclusive (that is, 0 ≤ rn2(x) < x).
For example, to simulate a percentage chance:
if (rn2(100) < chance) { ... }
Also,
!rn2(x)
is true with a 1/x probability.
See also rn1.
