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Reference Guide
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 
18 double mndasum(unsigned int, const double*, int);
19 
20 double sum_of_elements(const LAVector& v) {
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 
26 double sum_of_elements(const LASymMatrix& m) {
27  // calculate the absolute sum of all the matrix elements using mndasum
28  // which is a translation of dasum from BLAS
29  return mndasum(m.size(), m.Data(), 1);
30 }
31 
32  } // namespace Minuit2
33 
34 } // namespace ROOT
auto * m
Definition: textangle.C:8
Returns the available number of logical cores.
Definition: StringConv.hxx:21
double sum_of_elements(const LASymMatrix &)
Class describing a symmetric matrix of size n.
Definition: LASymMatrix.h:51
double mndasum(unsigned int, const double *, int)
Definition: mndasum.cxx:22