From: Dmitry Yatsushkevich <dyatsushkevich@mirantis.com>
Date: Tue, 10 Mar 2015 00:17:41 +0000 (-0700)
Subject: obj_bencher: generalize vec_stddev function
X-Git-Tag: v9.0.1~163^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=e360bfd7058af01fd03aa9260eacbdc5d631e34b;p=ceph.git

obj_bencher: generalize vec_stddev function

Generalize vec_stddev by making them templates, so that we could use different kind of a vector to calculate STDDEV

Signed-off-by: Dmitry Yatsushkevich <dyatsushkevich@mirantis.com>
---

diff --git a/src/common/obj_bencher.cc b/src/common/obj_bencher.cc
index 97670b3541e6..130c71d251d5 100644
--- a/src/common/obj_bencher.cc
+++ b/src/common/obj_bencher.cc
@@ -245,23 +245,24 @@ void _aio_cb(void *cb, void *arg) {
   lc->lock->Unlock();
 }
 
-static double vec_stddev(vector<double>& v)
+template<class T>
+static T vec_stddev(vector<T>& v)
 {
-  double mean = 0;
+  T mean = 0;
 
   if (v.size() < 2)
     return 0;
 
-  vector<double>::iterator iter;
+  typename vector<T>::iterator iter;
   for (iter = v.begin(); iter != v.end(); ++iter) {
     mean += *iter;
   }
 
   mean /= v.size();
 
-  double stddev = 0;
+  T stddev = 0;
   for (iter = v.begin(); iter != v.end(); ++iter) {
-    double dev = *iter - mean;
+    T dev = *iter - mean;
     dev *= dev;
     stddev += dev;
   }