mirror of
https://github.com/triqs/dft_tools
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40f8cb5c18
- necessary otherwise the class gf and the namespace have the same name, leading to some confusion, and need to qualify some functions (specially on gcc). Same naming conventions as arrays.
106 lines
4.3 KiB
C++
106 lines
4.3 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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#ifndef TRIQS_GF_TOOLS_H
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#define TRIQS_GF_TOOLS_H
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#include <triqs/utility/first_include.hpp>
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#include <utility>
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#include <boost/iterator/iterator_facade.hpp>
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#include <triqs/clef.hpp>
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#include <triqs/arrays/array.hpp>
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#include <triqs/arrays/matrix.hpp>
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#include <triqs/arrays/h5/simple_read_write.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 <triqs/h5.hpp>
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namespace triqs { namespace gfs {
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namespace tqa= triqs::arrays;
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namespace mpl=boost::mpl;
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namespace tag { struct composite{}; struct mesh_point{};}
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struct matrix_valued {};
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struct scalar_valued {};
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//------------------------------------------------------
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typedef std::complex<double> dcomplex;
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enum statistic_enum {Boson,Fermion};
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struct freq_infty{}; // the point at infinity
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inline std::vector<std::string> split(const std::string &s, char delim){
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std::vector<std::string> elems;
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std::stringstream ss(s);
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std::string item;
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while(std::getline(ss, item, delim)) { elems.push_back(item); }
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return elems;
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}
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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 { T value; template<typename U> explicit closest_pt_wrap(U&&x): value(std::forward<U>(x)){} };
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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) { return closest_pt_wrap<T...> (std::forward<T>(x)...);}
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//------------------------------------------------------
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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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typedef void has_view_type_tag; // Idiom : ValueView
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typedef nothing view_type;
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typedef nothing non_view_type;
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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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// BOOST Serialization
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive & ar, const unsigned int version) {
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}
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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 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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#endif
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