NormalRandomVariable::
operator double( void )
const throw()
{
assert( initialized_ );
return
mean_ +
std_dev_
* sqrt( -2.0 * log(uniform_random_0e_1i()) )
* cos( 2.0 * M_PI * uniform_random_0e_1i());
}
// ----------------------------------------------------------------------
bool
RandomDropTransmissionModel::
drop_message( TransmissionModel::MessageInfo&)
throw()
{
return uniform_random_0e_1i() <= probability_;
}
// ----------------------------------------------------------------------
bool
LinkProbabilityCommunicationModel::
can_communicate_uni( const Node& u, const Node& v )
const throw()
{
LinkProbabilityMap::const_iterator it = probabilities_.find( u.label() );
if(u==v) return true;
if( it == probabilities_.end() )
return false;
else
{
std::map<std::string, double>::const_iterator it2 = it->second.find(v.label());
if( it2 == it->second.end() )
return false;
else
return (it2->second >= uniform_random_0e_1i());
}
}
