mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 14:23:38 +01:00
8d7dd34aeb
- To be able to give explicitely the number of point. - two functions : if the number of points is not given, take as before. - updated the doc.
87 lines
3.8 KiB
C++
87 lines
3.8 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 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, int n_iw) {
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auto m = gf_mesh<imfreq, Opt>{gt.mesh().domain(), n_iw};
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auto gw = gf<imfreq, Target, Opt>{m, 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<imfreq, Target, Opt> make_gf_from_fourier(gf_impl<imtime, Target, Opt, V, C> const& gt) {
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return make_gf_from_fourier(gt, (gt.mesh().size() - (gt.mesh().kind() == full_bins ? 1 : 0)) / 2);
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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, int n_tau,
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mesh_kind mk = full_bins) {
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auto m = gf_mesh<imtime, Opt>{gw.mesh().domain(), n_tau};
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auto gt = gf<imtime, Target, Opt>{m, 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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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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return make_gf_from_inverse_fourier(gw, 2 * gw.mesh().size() + (mk == full_bins ? 1 : 0), mk);
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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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