#include <triqs/gfs/gf_sym_grp.hpp>

Detailed Description

Initializer-function concept for scalar-valued Green's functions.

A ScalarGfInitFunc accepts a mesh index and returns the (scalar) value type of the Green's function.

Template Parameters

F	Anything callable with a mesh_index_t.
G	Anything modeling the gf concept (with target_rank == 0).
mesh_index_t	Mesh index type for G.

Definition at line 92 of file gf_sym_grp.hpp.

Concept definition

template<typename F, typename G, typename mesh_index_t typename G::mesh_t::index_t>
concept triqs::gfs::ScalarGfInitFunc =  is_gf_v<G> and 
     requires(F f, mesh_index_t const &mesh_index) {
       requires(G::target_rank == 0);
       { f(mesh_index) } -> std::same_as<typename G::scalar_t>;
     }