OMNET++ 中的 C++ 编码

Question

谁能告诉我如何在 OMNET++ 中以不同的方式编写这段代码:

while(outGate==port){             
    outGate = intuniform(0, n-1);
}

还有一个:

void Txc15::forwardMessage (TicTocMsg15 *msg, int port)
{
// Increment hop count.
msg->setHopCount(msg->getHopCount()+1);
int outGate, n = gateSize("gate");

if(port != -1){
    //we enter here only if the message is forwarded
    outGate=port;
    //checking for more than one gate!
    if (n>1)
    {
        /**
       * It will exit from the while cycle only if the intuniform function
       * will choose a port different from the incoming one.
       */
        while(outGate==port){

            outGate = intuniform(0, n-1);
        }
    }
    EV << "Forwarding message " << msg << " on gate[" << outGate << "]\n";
    //forward the message provided following the conditions.
    send(msg, "gate$o", outGate);
}else{
    //port is equal to -1 if and only if the message in newly generated
    outGate = intuniform(0, n-1); // Randomly choose a gate.
    EV << "Forwarding message " << msg << " on gate[" << outGate << "]\n";
    send(msg, "gate$o", outGate);
} 
}

Answer 1

这个有有限的运行成本:

outGate = intuniform(0, n-2);
if (outgate >= port) outgate++;

请注意，统一随机数是从 0 到 n-2(不是 n-1)范围内抽取的。如果 outgate 大于或等于 port，我们将其加一。这有效地导致了 0..n-1 范围内的随机统一，除了它不能与端口相同。