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LaSumOfElements.cxx
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1 // @(#)root/minuit2:$Id$
2 // Authors: M. Winkler, F. James, L. Moneta, A. Zsenei 2003-2005
3 
4 /**********************************************************************
5  * *
6  * Copyright (c) 2005 LCG ROOT Math team, CERN/PH-SFT *
7  * *
8  **********************************************************************/
9 
10 #include "Minuit2/LAVector.h"
11 #include "Minuit2/LASymMatrix.h"
12 
13 namespace ROOT {
14 
15 namespace Minuit2 {
16 
17 double mndasum(unsigned int, const double *, int);
18 
19 double sum_of_elements(const LAVector &v)
20 {
21  // calculate the absolute sum of the vector elements using mndasum
22  // which is a translation from dasum from BLAS
23  return mndasum(v.size(), v.Data(), 1);
24 }
25 
27 {
28  // calculate the absolute sum of all the matrix elements using mndasum
29  // which is a translation of dasum from BLAS
30  return mndasum(m.size(), m.Data(), 1);
31 }
32 
33 } // namespace Minuit2
34 
35 } // namespace ROOT
m
auto * m
Definition: textangle.C:8
ROOT::Minuit2::mndasum
double mndasum(unsigned int, const double *, int)
Definition: mndasum.cxx:21
LASymMatrix.h
ROOT::Minuit2::LAVector
Definition: LAVector.h:32
ROOT::Minuit2::LASymMatrix
Class describing a symmetric matrix of size n.
Definition: LASymMatrix.h:45
v
@ v
Definition: rootcling_impl.cxx:3664
ROOT::Minuit2::sum_of_elements
double sum_of_elements(const LASymMatrix &)
Definition: LaSumOfElements.cxx:26
LAVector.h
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