mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 22:33:48 +01:00
64 lines
2.6 KiB
C++
64 lines
2.6 KiB
C++
/*******************************************************************************
|
|
*
|
|
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
|
|
*
|
|
* Copyright (C) 2013-2014 by O. Parcollet
|
|
*
|
|
* TRIQS is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
******************************************************************************/
|
|
#pragma once
|
|
#include "../tools.hpp"
|
|
#include "../gf.hpp"
|
|
#include "./tail.hpp"
|
|
|
|
namespace triqs {
|
|
namespace gfs {
|
|
|
|
struct no_tail {};
|
|
|
|
template <typename Variable, typename Target, bool V, bool C>
|
|
gf_view<Variable, Target, no_tail, C> make_gf_view_without_tail(gf_impl<Variable, Target, void, V, C> const &g) {
|
|
return {g.mesh(), g.data(), {}, g.symmetry(), g.indices(), g.name};
|
|
}
|
|
|
|
namespace details { // dispatch the test for scalar_valued and matrix_valued
|
|
using arrays::mini_vector;
|
|
|
|
inline void _equal_or_throw(mini_vector<size_t, 2> const &s_t, mini_vector<size_t, 2> const &g_t) {
|
|
if (s_t != g_t) TRIQS_RUNTIME_ERROR << "make_gf_from_g_and_tail: Shape of the gf target and of the tail mismatch";
|
|
}
|
|
|
|
inline void _equal_or_throw(mini_vector<size_t, 2> const &s_t, mini_vector<size_t, 0> const &g_t) {
|
|
if (s_t != mini_vector<size_t, 2>{1, 1})
|
|
TRIQS_RUNTIME_ERROR << "make_gf_from_g_and_tail: tail shape must be 1x1 for a scalar gf";
|
|
}
|
|
}
|
|
|
|
template <typename Variable, typename Target, bool V, bool C>
|
|
gf_view<Variable, Target> make_gf_from_g_and_tail(gf_impl<Variable, Target, no_tail, V, C> const &g, local::tail t) {
|
|
details::_equal_or_throw(t.shape(), get_target_shape(g));
|
|
auto g2 = gf<Variable, Target, no_tail>{g}; // copy the function without tail
|
|
return {std::move(g2.mesh()), std::move(g2.data()), std::move(t), g2.symmetry()};
|
|
}
|
|
|
|
template <typename Variable, typename Target, bool V, bool C>
|
|
gf_view<Variable, Target, void, C> make_gf_view_from_g_and_tail(gf_impl<Variable, Target, no_tail, V, C> const &g,
|
|
local::tail_view t) {
|
|
details::_equal_or_throw(t.shape(), get_target_shape(g));
|
|
return {g.mesh(), g.data(), t, g.symmetry()};
|
|
}
|
|
}
|
|
}
|