Difference between revisions of "Rn1"
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{{DISPLAYTITLE:rn1}} | {{DISPLAYTITLE:rn1}} | ||
− | {{randomvariable|name=rn1(x,y)|graph=rn1.svg|caption=[[wikipedia:Probability mass function|Probability mass function]] of rn1(10,5) | + | {{randomvariable|name=rn1(<var>x</var>,<var>y</var>)|graph=rn1.svg|caption=[[wikipedia:Probability mass function|Probability mass function]] of rn1(10,5)|distribution=[[Wikipedia:discrete uniform distribution|uniform]]|mean={{sfrac|<var>x</var> − 1|2}} + <var>y</var>|stddev=sqrt({{sfrac|x<sup>2</sup> − 1|12}})}} |
− | rn1(x, y){{refsrc|hack.h|291}} is a pseudo-random number macro used in NetHack when a result should be unweighted. It is equivalent to | + | '''rn1(<var>x</var>, <var>y</var>)'''{{refsrc|hack.h|291}} is a pseudo-random number macro used in ''NetHack'' when a result should be unweighted. It is equivalent to rn2(<var>x</var>) + <var>y</var>. The range of values is between <var>y</var> and <var>y</var> + <var>x</var> − 1 inclusive (that is, <var>y</var> ≤ rn1(<var>x</var>,<var>y</var>) < <var>x</var> + <var>y</var>). |
See also [[rn2]]. | See also [[rn2]]. |
Revision as of 22:42, 11 January 2020
rn1(x,y) | |
---|---|
Distribution | uniform |
Mean | x − 12 + y |
Standard deviation | sqrt(x2 − 112) |
rn1(x, y)[1] is a pseudo-random number macro used in NetHack when a result should be unweighted. It is equivalent to rn2(x) + y. The range of values is between y and y + x − 1 inclusive (that is, y ≤ rn1(x,y) < x + y).
See also rn2.
References
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