Explicit cast to double (sonar).

[simgrid.git] / src / kernel / resource / WifiLinkImpl.cpp

diff --git a/src/kernel/resource/WifiLinkImpl.cpp b/src/kernel/resource/WifiLinkImpl.cpp
index f4c9b75..8de4c54 100644 (file)
--- a/src/kernel/resource/WifiLinkImpl.cpp
+++ b/src/kernel/resource/WifiLinkImpl.cpp
@@ -28,9 +28,7 @@ WifiLinkImpl::WifiLinkImpl(const std::string& name, const std::vector<double>& b
 
 void WifiLinkImpl::set_host_rate(const s4u::Host* host, int rate_level)
 {
-  auto insert_done = host_rates_.insert(std::make_pair(host->get_name(), rate_level));
-  if (not insert_done.second)
-    insert_done.first->second = rate_level;
+  host_rates_[host->get_name()] = rate_level;
 
   // Each time we add a host, we refresh the decay model
   refresh_decay_bandwidths();
@@ -60,15 +58,15 @@ s4u::Link::SharingPolicy WifiLinkImpl::get_sharing_policy() const
   return s4u::Link::SharingPolicy::WIFI;
 }
 
-int WifiLinkImpl::get_host_count() const
+size_t WifiLinkImpl::get_host_count() const
 {
-  return static_cast<int>(host_rates_.size());
+  return host_rates_.size();
 }
 
 void WifiLinkImpl::refresh_decay_bandwidths()
 {
   // Compute number of STAtion on the Access Point
-  int nSTA = get_host_count();
+  const auto nSTA_minus_1 = static_cast<double>(get_host_count() - 1);
 
   std::vector<Metric> new_bandwidths;
   for (auto const& bandwidth : bandwidths_) {
@@ -77,12 +75,10 @@ void WifiLinkImpl::refresh_decay_bandwidths()
     double min_bw     = bandwidth.peak - (wifi_max_rate_ - wifi_min_rate_);
     double model_rate = bandwidth.peak - (wifi_max_rate_ - model_rate_);
 
-    //xbt_assert(min_bw > 0, "Your WIFI link is using bandwidth(s) which is too low for the decay model.");
-
     double N0     = max_bw - min_bw;
     double lambda = (-log(model_rate - min_bw) + log(N0)) / model_n_;
     // Since decay model start at 0 we should use (nSTA-1)
-    double new_peak = N0 * exp(-lambda * (nSTA - 1)) + min_bw;
+    double new_peak = N0 * exp(-lambda * nSTA_minus_1) + min_bw;
     new_bandwidths.push_back({new_peak, 1.0, nullptr});
   }
   decay_bandwidths_ = new_bandwidths;