ExponentialRandomVariable gives me two different values

[maede zolanvar]

I'm completely confused by random-variable-stream.h. I'm trying to print out the value of "OffTime" by the below code:

 Ptr<ExponentialRandomVariable> x = CreateObject<ExponentialRandomVariable> ();

 x->SetAttribute ("Mean", DoubleValue (0.1));

 std::stringstream value ;

 value <<"ns3::ConstantRandomVariable[Constant=" << x->GetValue ()<<"]";

 onoff.SetAttribute("OffTime",StringValue(value.str()));

 

 NS_LOG_UNCOND("off time:" << value.str());

 NS_LOG_UNCOND("off time:" << x->GetValue());

But the print gives me 2 different values, while I have used the same value of "x" in "value". My output is this:

off time:ns3::ConstantRandomVariable[Constant=0.0422695]

off time:0.338839

Please help :(

[Konstantinos]

Hi,

The results are as expected. The 'x' is a random variable and each time you call "GetValue()" a new one is generated.

Regards,

K