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, ...
85 lines
3.5 KiB
C++
85 lines
3.5 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) 2011 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_LOCAL_FOURIER_MATSU_H
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#define TRIQS_GF_LOCAL_FOURIER_MATSU_H
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#include "fourier_base.hpp"
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#include <triqs/gfs/imfreq.hpp>
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#include <triqs/gfs/imtime.hpp>
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namespace triqs {
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namespace gfs {
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template <typename Target, typename Opt, bool V, bool C>
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gf_keeper<tags::fourier, imtime, Target, Opt> fourier(gf_impl<imtime, Target, Opt, V, C> const& g) {
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return {g};
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}
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template <typename Target, typename Opt, bool V, bool C>
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gf_keeper<tags::fourier, imfreq, Target, Opt> inverse_fourier(gf_impl<imfreq, Target, Opt, V, C> const& g) {
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return {g};
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}
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// The fourier transform with the tail
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void triqs_gf_view_assign_delegation(gf_view<imfreq, scalar_valued> g, gf_keeper<tags::fourier, imtime, scalar_valued> const& L);
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void triqs_gf_view_assign_delegation(gf_view<imfreq, matrix_valued> g, gf_keeper<tags::fourier, imtime, matrix_valued> const& L);
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void triqs_gf_view_assign_delegation(gf_view<imtime, scalar_valued> g, gf_keeper<tags::fourier, imfreq, scalar_valued> const& L);
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void triqs_gf_view_assign_delegation(gf_view<imtime, matrix_valued> g, gf_keeper<tags::fourier, imfreq, matrix_valued> const& L);
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// The version without tail : only possible in one direction
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void triqs_gf_view_assign_delegation(gf_view<imfreq, scalar_valued, no_tail> g,
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gf_keeper<tags::fourier, imtime, scalar_valued, no_tail> const& L);
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void triqs_gf_view_assign_delegation(gf_view<imfreq, matrix_valued, no_tail> g,
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gf_keeper<tags::fourier, imtime, matrix_valued, no_tail> const& L);
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template <typename Opt> gf_mesh<imfreq, Opt> make_mesh_fourier_compatible(gf_mesh<imtime, Opt> const& m) {
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int L = m.size() - (m.kind() == full_bins ? 1 : 0);
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return {m.domain(), L};
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}
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template <typename Opt>
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gf_mesh<imtime, Opt> make_mesh_fourier_compatible(gf_mesh<imfreq, Opt> const& m, mesh_kind mk = full_bins) {
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int L = m.size() + (mk == full_bins ? 1 : 0);
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return {m.domain(), L};
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}
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template <typename Target, typename Opt, bool V, bool C>
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gf<imfreq, Target, Opt> make_gf_from_fourier(gf_impl<imtime, Target, Opt, V, C> const& gt) {
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auto gw = gf<imfreq, Target, Opt>{make_mesh_fourier_compatible(gt.mesh()), get_target_shape(gt)};
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gw() = fourier(gt);
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return gw;
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}
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template <typename Target, typename Opt, bool V, bool C>
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gf<imtime, Target, Opt> make_gf_from_inverse_fourier(gf_impl<imfreq, Target, Opt, V, C> const& gw, mesh_kind mk = full_bins) {
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auto gt = gf<imtime, Target, Opt>{make_mesh_fourier_compatible(gw.mesh(), mk), get_target_shape(gw)};
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gt() = inverse_fourier(gw);
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return gt;
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}
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}
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namespace clef {
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TRIQS_CLEF_MAKE_FNT_LAZY(fourier);
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TRIQS_CLEF_MAKE_FNT_LAZY(inverse_fourier);
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}
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}
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#endif
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