added a setLastAvg() method to report a 'substitute' min/avg/max if no real data...

[senf.git] / senf / Utils / StatisticAccumulator.ct

diff --git a/senf/Utils/StatisticAccumulator.ct b/senf/Utils/StatisticAccumulator.ct
index e2c7497..282d6e9 100644 (file)
--- a/senf/Utils/StatisticAccumulator.ct
+++ b/senf/Utils/StatisticAccumulator.ct
@@ -61,6 +61,12 @@ prefix_ float senf::StatisticAccumulator<T>::stddev()
 }
 
 template <class T>
+prefix_ void senf::StatisticAccumulator<T>::setLastAvg( T value)
+{
+    last_avg_ = value;        
+}
+
+template <class T>
 prefix_ void senf::StatisticAccumulator<T>::accumulate( T value)
 {
     if (count_ == 0) {
@@ -81,20 +87,29 @@ prefix_ void senf::StatisticAccumulator<T>::accumulate( T value)
 template <class T>
 prefix_ void senf::StatisticAccumulator<T>::clear()
 {
-    last_avg_ = avg();
-    count_ = 0;
-    sum_squared_ = 0;
-    sum_ = min_ = max_ = 0;
+    if( count_ > 0){
+      last_avg_ = avg();
+      count_ = 0;
+      sum_squared_ = 0;
+      sum_ = min_ = max_ = 0;
+    }
 }
 
 template <class T>
 prefix_ void senf::StatisticAccumulator<T>::data( StatisticsData &data_) const
 {
-    data_.min = (float) min_;
-    data_.avg = avg();
-    data_.max = (float) max_;
-    data_.stddev = stddev();
-    data_.count = count;
+    if( count_ == 0){
+       data_.min = data_.avg = data_.max = last_avg_;
+       data_.stddev = 0.0;
+       data_.count = 0;
+    }
+    else{
+      data_.min = (float) min_;
+      data_.avg = avg();       
+      data_.max = (float) max_;
+      data_.stddev = stddev();
+      data_.count = count_;
+  }
 }