Tabelle Erlang B

[Giuseppe Bianchi < >]

Stampatele e portatele a lezione giovedi'.

Saluti, GB


PS: per il calcolo dell'erlang B, ove voleste programmarvelo, ecco un 
esempio (C++) che usa il trucco dei logaritmi spiegato a lezione

double erlangb(int C, double A) {
double  a = log(A);             // do this logarithm of the offered load once 
for all
double  f = 0;                  // logarithm of the factorial: start from 
log(0!) = 0
double  d = 1;                  // denominator: start from A^0/0! = 1
double  e;                      // cache the latest computed term
for(int i=1; i<=C; i++) {            // cycle 1-->C
        f += log(double(i));    // f is the current logarithm of factorial(i)
        e = exp(i * a - f);             // e is the current A^i/i!
        d += e;                 // d is the current sum of A^i/i to be used 
as denom
        }
return e/d;
}

Attachment: ErlB-inversa-1.pdf
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Attachment: ErlB-inversa-2.pdf
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Attachment: ErlB.pdf
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