mirror of
https://github.com/triqs/dft_tools
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90 lines
3.5 KiB
C++
90 lines
3.5 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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#ifndef TRIQS_ARRAYS_INDEXMAP_COMMON_H
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#define TRIQS_ARRAYS_INDEXMAP_COMMON_H
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#include "../impl/common.hpp"
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#include <triqs/utility/mini_vector.hpp>
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//#include "../impl/tuple_tools.hpp"
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#include <boost/ref.hpp>
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#include <iostream>
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namespace boost { namespace serialization { class access;}}
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namespace triqs { namespace arrays { namespace Tag {struct indexmap{}; }}}
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namespace triqs { namespace arrays {
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using utility::mini_vector;
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// make_shape
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// generalize with preproc or variadic template
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//#define IMPL(z, NN, unused) \
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// template <typename T> mini_vector<size_t,BOOST_PP_INC(NN)> make_shape(BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(NN), T I_)) \
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// { return mini_vector<size_t,BOOST_PP_INC(NN)>(BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(NN), I_));}
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// BOOST_PP_REPEAT(ARRAY_NRANK_MAX , IMPL, nil)
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//#undef IMPL
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template<typename... T>
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mini_vector<size_t, sizeof...(T)+1> make_shape(size_t x0, T... args) { return mini_vector<size_t, sizeof...(T)+1> (x0,args...);}
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namespace indexmaps {
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// to be specialized for all IndexMap types.
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template<typename IndexMap, typename... Args> struct slicer;
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/// Returns whether the 2 indexMaps are compatible with A op B (op : = , +, etc...)
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template< typename IndexMap1, typename IndexMap2>
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bool compatible_for_binary_ops (const IndexMap1 &, const IndexMap2 &);
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// The generator of indices for an index domain.
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template<typename Domain, typename Parameter> class indices_generator;
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/**
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* Is a raw copy possible between 2 arrays with these indexMaps ?
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* They have to have the same ordering, and be contiguous typically.
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*/
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template< typename IndexMap1, typename IndexMap2>
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bool raw_copy_possible (const IndexMap1 &, const IndexMap2 &);
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/**
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* Metafunction.
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* Given an IndexMapIterator and an IndexMap,
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* ::type should be the iterator of IndexMap which traverses
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* the indices in the same order as IndexMapIterator.
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* Example :
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* - IndexMapIterator is a parallelepipedon_iterator < SomeParallelepipedon, So
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meIterationOrder>
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* - IndexMap is AnotherParallelepipedon (e.g. with a different memory storage)
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.
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* - type is then parallelepipedon_iterator < AnotherParallelepipedon, SomeIter
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ationOrder>
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* Application example :
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* A = B with A, B in different order in memory.
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* One takes the optimized iterator on A, this defines the order of indices
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traversal,
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* and use indexmap_iterator_adapter to deduce the iterator on B that traver
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se the indices in the same way.
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*/
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//template <typename IndexMapIterator, typename IndexMap>
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// struct indexmap_iterator_adapter;
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}}}//namespace triqs::arrays
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#endif
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