function main($argc, $argv)
{
if ($argc < 5) {
printf("Usage: %s m S N Z\n", $argv[0]);
printf("Where:\n");
printf("\tm = Number of servicemem\n");
printf("\tS = Mean service time\n");
printf("\tN = Number of machine\n");
printf("\tZ = Mean time to failure (MTTF)\n");
printf("\n");
exit(1);
}
$m = atol($argv[1]);
$S = atof($argv[2]);
$N = atol($argv[3]);
$Z = atof($argv[4]);
repair($m, $S, $N, $Z);
}
printf("\nMean Value Analysis algorithm for single class workload\n");
while (TRUE) {
printf("\n(Hit RETURN to exit) ");
printf("Enter no. of centers (K): ");
gets($input);
if ($input == "") {
break;
} else {
$K = atoi($input);
}
for ($k = 1; $k <= $K; $k++) {
printf("Enter demand at center %d (D[%d]): ", $k, $k);
gets($input);
$D[$k] = atof($input);
}
printf("Enter think time (Z):");
gets($input);
$Z = atof($input);
while (TRUE) {
printf("\n(Hit RETURN to stop) ");
printf("Enter no. of terminals (N): ");
gets($input);
if ($input == "") {
break;
} else {
$N = atoi($input);
mva();
}
}
}
// main
return $f;
}
if ($argc < 5) {
printf("Usage: %s m S N Z\n", $argv[0]);
printf("Where:\n");
printf("\tm = Number of servicemem\n");
printf("\tS = Mean service time\n");
printf("\tN = Number of machine\n");
printf("\tZ = Mean time to failure (MTTF)\n");
printf("\n");
exit(1);
}
$m = atol($argv[1]);
$S = atof($argv[2]);
$N = atol($argv[3]);
$Z = atof($argv[4]);
$p = 1;
$p0 = 1;
$L = 0;
for ($k = 1; $k <= $N; $k++) {
$p *= ($N - $k + 1) * $S / $Z;
if ($k <= $m) {
$p /= $k;
} else {
$p /= $m;
}
$p0 += $p;
if ($k > $m) {
$L += $p * ($k - $m);
}
}