Changeset 3198 in Sophya for trunk/SophyaLib/HiStats/histerr.cc

Timestamp:

Apr 3, 2007, 5:15:11 PM (18 years ago)

Author:

cmv

Message:

add methods Sum(),Sum2(),SumN() in HistoErr cmv 03/04/2007

File:

• trunk/SophyaLib/HiStats/histerr.cc (modified) (1 diff)

trunk/SophyaLib/HiStats/histerr.cc

@@ -193 +193 @@
 /********* Methode *********/
 /*!
+  Return the sum of bin value
+*/
+double HistoErr::Sum(void)
+{
+ double s = 0.;
+ for(int_4 i=0;i<nx_;i++) {
+   if(ndata_(i)<1.) continue;
+   s += data_(i);
+ }
+ return s;
+}
+
+/********* Methode *********/
+/*!
+  Return the sum of the bin value squared
+*/
+double HistoErr::Sum2(void)
+{
+ double s = 0.;
+ for(int_4 i=0;i<nx_;i++) {
+   if(ndata_(i)<1.) continue;
+   s += data_(i)*data_(i);
+ }
+ return s;
+}
+
+/********* Methode *********/
+/*!
+  Return the sum of the number of entries
+*/
+double HistoErr::SumN(void)
+{
+ double s = 0.;
+ for(int_4 i=0;i<nx_;i++) {
+   if(ndata_(i)<1.) continue;
+   s += ndata_(i);
+ }
+ return s;
+}
+
+/********* Methode *********/
+/*!
   Operateur egal HistoErr = HistoErr
 */