mirror of
https://github.com/triqs/dft_tools
synced 2024-11-01 19:53:45 +01:00
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2011 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#include "./common.hpp"
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#include <triqs/arrays/array.hpp>
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#include <triqs/arrays/vector.hpp>
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#include <iostream>
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namespace tqa=triqs::arrays;
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int main(int argc, char **argv) {
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std::cout << "With swap"<< std::endl;
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{
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triqs::arrays::vector<double> V(3), W(4);;
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V() = 3; W()=4;
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auto VV = V(tqa::range (0,2));
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auto VW = W(tqa::range (0,2));
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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swap(V,W);
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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swap(VV,VW);
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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}
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std::cout << "With std::swap"<< std::endl;
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{
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triqs::arrays::vector<double> V(3), W(4);;
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V() = 3; W()=4;
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std::cout << "V = "<< V << " W = " << W<< std::endl;
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std::swap(V,W);
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std::cout << "V = "<< V << " W = " << W<< std::endl;
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// This does NOT compile, the std::swap specialization is deleted.
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auto VV = V(tqa::range (0,2));
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auto VW = W(tqa::range (0,2));
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//std::swap(VV,VW);
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}
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std::cout << "With deep_swap"<< std::endl;
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{
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triqs::arrays::vector<double> V(3), W(3);;
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V() = 3; W()=4;
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auto VV = V(tqa::range (0,2));
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auto VW = W(tqa::range (0,2));
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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deep_swap(V,W);
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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deep_swap(VV,VW);
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std::cout << "V = "<< V << " W = " << W<< " V view "<< VV<< " W view "<< VW<< std::endl;
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}
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return 0;
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}
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