LaSumOfElements.cxx

Go to the documentation of this file.

// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005

/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/

#include "Minuit2/LAVector.h"
#include "Minuit2/LASymMatrix.h"

namespace ROOT {

   namespace Minuit2 {


double mndasum(unsigned int, const double*, int);

double sum_of_elements(const LAVector& v) {
   // calculate the absolute sum of the vector elements using mndasum
   // which is a translation from dasum from BLAS
   return mndasum(v.size(), v.Data(), 1);
}

double sum_of_elements(const LASymMatrix& m) {
   // calculate the absolute sum of all the matrix elements using mndasum
   // which is a translation of dasum from BLAS
   return mndasum(m.size(), m.Data(), 1);
}

   }  // namespace Minuit2

}  // namespace ROOT