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dft_tools/triqs/gfs/deprecated/re_im_freq.hpp
Olivier Parcollet 39edb2f846 [API change] gf : factories -> constructors
- Make more general constructors for the gf.
  gf( mesh, target_shape_t)
- remove the old make_gf for the basic gf.
- 2 var non generic gf removed.
- clean evaluator
- add tensor_valued
- add a simple vertex test.
- clean specialisation
- Fix bug introduced in 1906dc3
- forgot to resize the gf in new version of operator =
- Fix make_singularity in gf.hpp

- clean resize in operator =

- update h5 read/write for block gf
  - changed a bit the general trait to save *all* the gf.
  - allows a more general specialization, then a correct for blocks

- NOT FINISHED : need to save the block indice for python.
  How to reread ?
  Currently it read the blocks names and reconstitute the mesh from it.
  Is it sufficient ?

- clean block constructors

 - block constructors simplest possible : an int for the number of blocks
 - rest in free factories.
 - fixed the generic constructor from GfType for the regular type :
   only enable iif GfType is ImmutableGreenFunction

- multivar. fix linear index in C, and h5 format

  - linear index now correctly flatten in C mode
    (was in fortran mode), using a simple reverse of the tuple in the folding.
  - fix the h5 read write of the multivar fonctions
   in order to write an array on dimension # variables + dim_target
   i.e. without flattening the indices of the meshes.
   Easier for later data analysis, e.g. in Python.

- merge matrix/tensor_valued. improve factories

  - matrix_valued now = tensor_valued<2>
    (simplifies generic code for h5).
  - factories_one_var -> factories : this is the generic case ...
    only a few specialization, code is simpler.

- clef expression call with rvalue for *this
- generalize matrix_proxy to tensor and clean

 - clean exception catch in tests

  - exception catching catch in need in test
    because the silly OS X does not print anything, just "exception occurred".
    Very convenient for the developer...
  - BUT, one MUST add return 1, or the make test will *pass* !!
  - --> systematically replace the catch by a macro TRIQS_CATCH_AND_ABORT
    which return a non zero error code.
   - exception : curry_and_fourier which does not work at this stage
   (mesh incompatible).

- gf: clean draft of gf 2 times
  - comment the python interface for the moment.
  - rm useless tests
2013-10-21 15:11:44 +02:00

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C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2012 by M. Ferrero, 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/>.
*
******************************************************************************/
#ifndef TRIQS_GF_RE_IM_FREQ_H
#define TRIQS_GF_RE_IM_FREQ_H
#include "./tools.hpp"
#include "./gf.hpp"
#include "./refreq.hpp"
#include "./imfreq.hpp"
#include "./meshes/product.hpp"
namespace triqs { namespace gfs {
struct re_im_freq {};
// the mesh
template<typename Opt> struct gf_mesh<re_im_freq,Opt> : mesh_product<gf_mesh<refreq,Opt>,gf_mesh<imfreq,Opt>> {
typedef gf_mesh<refreq,Opt> m1_t;
typedef gf_mesh<imfreq,Opt> m2_t;
typedef mesh_product<m1_t,m2_t> B;
gf_mesh () = default;
gf_mesh (double wmin, double wmax, int n_freq_re, double beta, statistic_enum S, int n_freq_im) :
B { gf_mesh<refreq,Opt>(wmin,wmax,n_freq_re,full_bins), gf_mesh<imfreq,Opt>(beta, S, n_freq_im)} {}
};
namespace gfs_implementation {
// singularity
template<typename Opt> struct singularity<re_im_freq,scalar_valued,Opt> { typedef gf<refreq,scalar_valued> type;};
// h5 name
template<typename Opt> struct h5_name<re_im_freq,scalar_valued,Opt> { static std::string invoke(){ return "GfReImFreq";}};
/// --------------------------- data access ---------------------------------
template<typename Opt> struct data_proxy<re_im_freq,scalar_valued,Opt> : data_proxy_array<std::complex<double>,1> {};
/// --------------------------- evaluator ---------------------------------
template<typename Opt>
struct evaluator<re_im_freq,scalar_valued,Opt> {
static constexpr int arity = 2;
template<typename G>
std::complex<double> operator() (G const * g, double w, long n) const {
auto & data = g->data();
auto & mesh = g->mesh();
int nr; double wr; bool in;
std::tie(in, nr, wr) = windowing( std::get<0>(g->mesh().components()), w);
if (!in) TRIQS_RUNTIME_ERROR <<" Evaluation out of bounds";
auto gg = [g,data,mesh]( int nr, int n) {return data(mesh.index_to_linear(std::tuple<int,int>{nr,n}));};
return wr * gg(nr,n) + (1-wr) * gg(nr+1,n) ;
}
};
// ------------------------------- Factories --------------------------------------------------
template<typename Opt> struct factories<re_im_freq, scalar_valued,Opt> {
typedef gf<re_im_freq, scalar_valued,Opt> gf_t;
struct target_shape_t {};
// typedef typename gf_mesh<re_im_freq, Opt>::type mesh_t;
static gf_t make_gf(double wmin, double wmax, int nw, double beta, statistic_enum S, int nwn) {
auto m = gf_mesh<re_im_freq,Opt>(wmin, wmax, nw, beta, S, nwn);
typename gf_t::data_regular_t A(m.size());
A() =0;
return gf_t (m, std::move(A), gf<refreq,scalar_valued>({wmin, wmax, nw}), nothing() ) ;
}
};
} // gfs_implementation
}}
#endif