Modern Math NextPoisson

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NextPoisson

Returns a random count of events in one interval at rate lambda; its mean is lambda.

Syntax

NextPoisson( lambda )

Examples

#import "std/numeric"
using numeric

dim r as Rng = RngFromEntropy( )

'' How many events arrive in one interval at rate lambda. Its mean IS
'' lambda, and it is a count, so it never comes back negative.
dim as int64 total = 0
for i as int32 = 1 to 2000
    total += r.NextPoisson( 4.0 )
next
dim as float64 mean_ = total / 2000

print mean_ > 3.5 andalso mean_ < 4.5     '' -1 (true)

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Library: Math Library
Category: Math Library
Documented under: Nothing Becomes A Keyword