cuda/CFieldComparison.h

#ifndef PRDC_CUDA_C_FIELD_COMPARISON_H
#define PRDC_CUDA_C_FIELD_COMPARISON_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.
*/
 
#include <prdc/cuda/CField.h>
#include <util/containers/DArray.h>
 
namespace Pscf {
namespace Prdc {
namespace Cuda {
 
   using namespace Util;

   template <int D>
   class CFieldComparison {
 
   public:

      CFieldComparison();
 
      // Use compiler defined destructor and assignment operator.
 
      double compare(CField<D> const & a, CField<D> const & b);
 
      double compare(DArray< CField<D> > const & a, 
                     DArray< CField<D> > const & b);

      double maxDiff() const
      {  return maxDiff_; }
   
      double rmsDiff() const
      {  return rmsDiff_; }
   
   private:
  
      // Maximum element-by-element difference. 
      double maxDiff_;
 
      // Room-mean-squared element-by-element difference. 
      double rmsDiff_;
   
   };
 
   #ifndef PRDC_CUDA_C_FIELD_COMPARISON_TPP
   // Explicit instantiation declarations
   extern template class CFieldComparison<1>;
   extern template class CFieldComparison<2>;
   extern template class CFieldComparison<3>;
   #endif
 
 
} // namespace Prdc::Cuda
} // namespace Prdc
} // namespace Pscf
#endif