model System
Integer y;  Real r1024;
Integer state1024[Modelica.Math.Random.Generators.Xorshift1024star.nState];
equation
y = if (r1024 <= 0.2) then -1 else if (r1024 <= 0.5) then 0 else 1;
algorithm
when initial() then
state1024 := Modelica.Math.Random.Generators.Xorshift1024star.initialState(614657, 30020);
r1024     := 0;
elsewhen sample(0,1) then
(r1024,state1024) := Modelica.Math.Random.Generators.Xorshift1024star.random(pre(state1024));
end when;
end System;