new tests

[loba.git] / statistics.h

diff --git a/statistics.h b/statistics.h
index 7e3fb2ead86d5b70f48430a6d662710c3b44bd9c..28aa91390a5bcf3cdc587d06a962728e9a32bf55 100644 (file)
--- a/statistics.h
+++ b/statistics.h
@@ -25,7 +25,7 @@ public:
     double get_sum() const      { return sum;                  }
     double get_mean() const     { return mean;                 }
     double get_variance() const { return sqdiff_sum / count;   }
     double get_sum() const      { return sum;                  }
     double get_mean() const     { return mean;                 }
     double get_variance() const { return sqdiff_sum / count;   }

-    double get_stddev() const   { return sqrt(get_variance()); }
+    double get_stddev() const   { return std::sqrt(get_variance()); }

 
 private:
     int count;
 
 private:
     int count;