reduce.hpp

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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
// Copyright (c) Lawrence Livermore National Security, LLC and other
// RAJA Project Developers. See top-level LICENSE and COPYRIGHT
// files for dates and other details. No copyright assignment is required
// to contribute to RAJA.
//
// SPDX-License-Identifier: (BSD-3-Clause)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
 
#ifndef RAJA_reduce_HPP
#define RAJA_reduce_HPP
 
#include "RAJA/config.hpp"
 
#include "RAJA/util/Operators.hpp"
#include "RAJA/util/macros.hpp"
 
namespace RAJA
{
 
#define RAJA_MIN(a, b) (((b) < (a)) ? (b) : (a))
#define RAJA_MAX(a, b) (((b) > (a)) ? (b) : (a))
 
#define RAJA_MINLOC_UNSTRUCTURED(set_val, set_idx, a_val, a_idx, b_val, b_idx) \
  set_idx = ((b_val) < (a_val) ? (b_idx) : (a_idx));                           \
  set_val = ((b_val) < (a_val) ? (b_val) : (a_val));
#define RAJA_MAXLOC_UNSTRUCTURED(set_val, set_idx, a_val, a_idx, b_val, b_idx) \
  set_idx = ((b_val) > (a_val) ? (b_idx) : (a_idx));                           \
  set_val = ((b_val) > (a_val) ? (b_val) : (a_val));
 
//
// Forward declarations for reduction templates.
// Actual classes appear in forall_*.hxx header files.
//
// IMPORTANT: reduction policy parameter must be consistent with loop
//            execution policy type.
//
// Also, mutliple reductions using different reduction operations may be
// combined in a single RAJA forall() construct.
//
 
template<typename REDUCE_POLICY_T, typename T>
class ReduceMin;
 
template<typename REDUCE_POLICY_T, typename T, typename IndexType = Index_type>
class ReduceMinLoc;
 
template<typename REDUCE_POLICY_T, typename T>
class ReduceMax;
 
template<typename REDUCE_POLICY_T, typename T, typename IndexType = Index_type>
class ReduceMaxLoc;
 
template<typename REDUCE_POLICY_T, typename T>
class ReduceSum;
 
template<typename REDUCE_POLICY_T, typename T>
class ReduceBitOr;
 
 
template<typename REDUCE_POLICY_T, typename T>
class ReduceBitAnd;
}  // namespace RAJA
 
 
#endif  // closing endif for header file include guard