SIMSCRIPT II.5 Programming Language

Discrete Simulation Concepts
Table 5-5. Statistical Distribution Functions - Continued
Name
Arguments
Function
Mode
Function Value
weibull.f
e 1 , e 2 , i
REAL,REAL,
INTEGER
REAL
Generates a Weibull-distributed REAL number
with shape parameter = e 1 and scale parameter =
e 2 using stream i.
2. Although similar to the previous example, the TASK process now has a given argument assumed
to have a Poisson distribution with a mean of 5. Note that two separate random number
streams are to be used in sampling the distributions:
process GENERATOR
until time.v gt TIME.LIMIT
do
let NUMBER = poisson.f(5.0, 1)
activate a TASK giving NUMBER now
wait exponential.f(MEAN, 2) days
loop
return
end
3. Evaluation of PI (π):
In a rectangular coordinate system (figure 5-7), the equation of a circle is:
i 2 + j 2 = r 2
that is, any point (i,j) with i ≤ r and j ≤ r and i 2 + j 2 ≤ r 2 lies inside a circle of radius r. The
area of the circle is πr 2 . A square of side 2r has an area = 4r 2 . The ratio of the area of the
circle to the area of the square is πr 2 /4r 2 = π/4.
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