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A first general restructuration of the doc according to the pattern [tour|tutorial|reference]. In the reference part, objects are documented per topic. In each topic, [definition|c++|python|hdf5] (not yet implemented)
133 lines
3.5 KiB
ReStructuredText
133 lines
3.5 KiB
ReStructuredText
.. highlight:: c
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.. _gf_block:
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Block Green functions
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=======================
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This is a specialisation of :ref:`gf_and_view` for block functions.
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A block Green function is nothing but Green function on a discrete domain representing the
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block indices, and whose value is itself a Green function.
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For convenience, the following aliases are provided ::
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template<typename ... T> using block_gf = gf <block_index, gf<T...>>;
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template<typename ... T> using block_gf_view = gf_view <block_index, gf<T...>>;
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template<typename ... T> using block_gf_const_view = gf_const_view<block_index, gf<T...>>;
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Constructors
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--------------
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The constructors of the gf.
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target_shape_t = {}
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Factories
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-------------
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Also several factories are provided for these block Green functions.
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Factories for the regular type
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.....................................
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The factories for the regular type *gf* are ::
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// From a number and a gf to be copied
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(int n, gf<Variable, Target, Opt> const & g);
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// From a vector of gf (moving directly)
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::vector<gf<Variable, Target, Opt>> V);
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// From a vector of gf or views (a gf must be contructible from GF2)
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template <typename Variable, typename Target, typename Opt, typename GF2>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::vector<GF2> const &V);
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// From a init list of GF with the correct type
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::initializer_list<gf<Variable, Target, Opt>> const &V);
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// From vector<string> and a gf to be copied
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::vector<std::string> block_names, gf<Variable, Target, Opt> const &g);
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// From vector<string>, vector<gf>
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::vector<std::string> block_names, std::vector<gf<Variable, Target, Opt>> V);
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// From vector<string>, init_list<GF>
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template <typename Variable, typename Target, typename Opt>
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block_gf<Variable, Target, Opt>
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make_block_gf(std::vector<std::string> block_names,
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std::initializer_list<gf<Variable, Target, Opt>> const &V);
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Factories for the view type
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.....................................
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The factories for the view type *gf_view*, *gf_const_view* are ::
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// Build a view of the gf.
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// 1- All Green functions must have the same type
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// 2- [Expert only] This is a simplified version of the code.
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// In the real code, the reference is of stripped from G in the type deduction.
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template<typename ... G>
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gf_view<block_index, G>
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make_block_gf_view(G && ... g);
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// Make a view from a vector of gf
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template<typename GF>
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gf_view<block_index,GF>
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make_block_gf_view_from_vector (std::vector<GF> V);
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Domain & mesh
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----------------
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The domain is a discrete domain ...
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Singularity
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-------------
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None.
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Interpolation method
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---------------------
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None.
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Data storage
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---------------
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Not exposed to user.
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HDF5 storage convention
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---------------------------
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TO BE WRITTEN.
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Iterators
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-----------
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TO BE COMPLETED.
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Block gf have a natural iterator, e.g. ::
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// if a BG is block function
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for (auto & g: BG) ....
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Examples
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---------
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.. triqs_example:: ./gf_block_0.cpp
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