cpu/Reduce.h

#ifndef PSCF_CPU_REDUCE_H
#define PSCF_CPU_REDUCE_H
 
/*
* PSCF - Polymer Self-Consistent Field
*
* Copyright 2015 - 2025, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/
 
// Forward declaration
namespace Util {
   template <typename T> class Array;
}
 
namespace Pscf {
 
   using namespace Util;

 
   namespace Reduce {
 
      /*
      *  This file and Reduce.cpp contain declarations and definitions
      *  for reduction functions that operate real arrays.  Corresponding 
      *  declarations and definitions for reductions of complex-valued
      *  arrays are in files ReduceCx.h and ReduceCx.cpp, respectively. 
      */
 
      // Summation

      double sum(Array<double> const & in);

      double sum(Array<double> const & in, int begin, int end);

      double sumSq(Array<double> const & in);
 
      // Summation of products

      double innerProduct(Array<double> const & a,
                          Array<double> const & b);
 
      // Maxima 

      double max(Array<double> const & in);

      double max(Array<double> const & in, int begin, int end);

      double maxAbs(Array<double> const & in);
 
      // Minima

      double min(Array<double> const & in);

      double min(Array<double> const & in, int begin, int end);

      double minAbs(Array<double> const & in);
 
   } // namespace Reduce
} // namespace Pscf
#endif