Line data    Source code

       1             : 
       2             : // The libMesh Finite Element Library.
       3             : // Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
       4             : 
       5             : // This library is free software; you can redistribute it and/or
       6             : // modify it under the terms of the GNU Lesser General Public
       7             : // License as published by the Free Software Foundation; either
       8             : // version 2.1 of the License, or (at your option) any later version.
       9             : 
      10             : // This library is distributed in the hope that it will be useful,
      11             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13             : // Lesser General Public License for more details.
      14             : 
      15             : // You should have received a copy of the GNU Lesser General Public
      16             : // License along with this library; if not, write to the Free Software
      17             : // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      18             : 
      19             : 
      20             : 
      21             : #ifndef LIBMESH_PARALLEL_ALGORITHMS_H
      22             : #define LIBMESH_PARALLEL_ALGORITHMS_H
      23             : 
      24             : // The library configuration options
      25             : #include "libmesh/libmesh_config.h"
      26             : 
      27             : // C++ headers
      28             : #include <numeric>
      29             : 
      30             : // Workaround incomplete C++17 support in some compilers/libs
      31             : 
      32             : #ifdef LIBMESH_HAVE_CXX17_TRANSFORM_REDUCE
      33             : template <typename InputIt, class T, class BinaryOp, class UnaryOp>
      34             : T libmesh_transform_reduce(InputIt begin, InputIt end, T init, BinaryOp reduce, UnaryOp transform)
      35             : {
      36           0 :   return std::transform_reduce(begin, end, init, reduce, transform);
      37             : }
      38             : #else
      39             : template <typename InputIt, class T, class BinaryOp, class UnaryOp>
      40           0 : T libmesh_transform_reduce(InputIt begin, InputIt end, T init, BinaryOp reduce, UnaryOp transform)
      41             : {
      42             :   // Reuse init as returnval.
      43             :   //
      44             :   // Don't try to do any fancy reduce() reordering/vectorization;
      45             :   // people who want that can get a real compiler.
      46           0 :   for (auto it = begin; it != end; ++it)
      47           0 :     init = reduce(init, transform(*it));
      48           0 :   return init;
      49             : }
      50             : #endif // LIBMESH_HAVE_CXX17_TRANSFORM_REDUCE
      51             : 
      52             : #endif // LIBMESH_PARALLEL_ALGORITHMS_H