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dft_tools/test/triqs/arrays/reinterpret_view.cpp

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/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2011 by O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#include <triqs/arrays.hpp>
#include <iostream>
namespace triqs { namespace arrays {
template <typename V, int R, ull_t Opt, ull_t To, typename ... I>
array_view<V, sizeof...(I), Opt> reinterpret_array_view (array<V,R,Opt,To> const & a, I ... index) {
static int constexpr rank = sizeof...(I);
typedef array_view<V, rank, Opt, indexmaps::mem_layout::c_order(rank)> return_t;
return return_t (typename return_t::indexmap_type (mini_vector<size_t,rank>(index...)) , a.storage());
}
}}
int main(int argc, char **argv) {
triqs::arrays::array<long,1> A = {1,2,3,4,5,6};
std::cout << reinterpret_array_view(A, 2,3);
return 0;
}