mirror of
https://github.com/triqs/dft_tools
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bdac3e159c
- little details : code cleaning, clang formatting, along with documentation writing for c++ gf. - separated the mesh in small class for better doc. - work on documentation : reorganize specialisation, ...
107 lines
4.1 KiB
C++
107 lines
4.1 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) 2012 by M. Ferrero, 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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#pragma once
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#include <triqs/arrays.hpp>
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#include "triqs/utility/complex_ops.hpp"
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#include <triqs/utility/view_tools.hpp>
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#include <triqs/utility/expression_template_tools.hpp>
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#include <utility>
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#include <boost/iterator/iterator_facade.hpp>
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namespace triqs {
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namespace gfs {
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namespace mpl = boost::mpl;
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namespace tag {
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struct composite {};
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struct mesh_point {};
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}
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// scalar_valued, matrix_valued, tensor_valued
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struct scalar_valued {};
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template <int R> struct tensor_valued {
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static_assert(R > 0, "tensor_valued only for rank >0");
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};
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struct matrix_valued {};
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//------------------------------------------------------
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using dcomplex = std::complex<double>;
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/** The statistics : Boson or Fermion
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*/
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enum statistic_enum {
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Boson,
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Fermion
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};
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struct freq_infty {}; // the point at infinity
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//------------------------------------------------------
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template <typename... T> struct closest_pt_wrap;
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template <typename T> struct closest_pt_wrap<T> : tag::mesh_point {
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T value;
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template <typename U> explicit closest_pt_wrap(U &&x) : value(std::forward<U>(x)) {}
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};
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template <typename T1, typename T2, typename... Ts> struct closest_pt_wrap<T1, T2, Ts...> : tag::mesh_point {
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std::tuple<T1, T2, Ts...> value_tuple;
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template <typename... U> explicit closest_pt_wrap(U &&... x) : value_tuple(std::forward<U>(x)...) {}
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};
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template <typename... T> closest_pt_wrap<T...> closest_mesh_pt(T &&... x) {
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return closest_pt_wrap<T...>{std::forward<T>(x)...};
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}
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//------------------------------------------------------
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// A simple replacement of tail when there is none to maintain generic code simple...
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struct nothing {
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template <typename... Args> explicit nothing(Args &&...) {} // takes anything, do nothing..
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nothing() {}
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using view_type = nothing;
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using regular_type = nothing;
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void rebind(nothing) {}
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template <typename RHS> void operator=(RHS &&) {}
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friend void h5_write(h5::group, std::string subgroup_name, nothing) {}
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friend void h5_read(h5::group, std::string subgroup_name, nothing) {}
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friend class boost::serialization::access;
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template <class Archive> void serialize(Archive &ar, const unsigned int version) {}
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friend nothing operator+(nothing, nothing) { return nothing(); }
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template <typename RHS> friend void assign_from_expression(nothing &, RHS) {}
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};
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template <typename... T> nothing slice_target(nothing, T...) { return nothing(); }
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template <typename T> nothing operator+(nothing, T const &) { return nothing(); }
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template <typename T> nothing operator-(nothing, T const &) { return nothing(); }
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template <typename T> nothing operator*(nothing, T const &) { return nothing(); }
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template <typename T> nothing operator/(nothing, T const &) { return nothing(); }
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template <typename T> TYPE_DISABLE_IF(nothing, std::is_same<T, nothing>) operator+(T const &, nothing) { return nothing(); }
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template <typename T> TYPE_DISABLE_IF(nothing, std::is_same<T, nothing>) operator-(T const &, nothing) { return nothing(); }
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template <typename T> TYPE_DISABLE_IF(nothing, std::is_same<T, nothing>) operator*(T const &, nothing) { return nothing(); }
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template <typename T> TYPE_DISABLE_IF(nothing, std::is_same<T, nothing>) operator/(T const &, nothing) { return nothing(); }
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}
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}
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